Commit Graph

30 Commits

Author SHA1 Message Date
Ben Duncan b76aab8b50 feat(installer): three-plane networking, ZFS root, distributed NAT and multi-node install (#663) 2026-08-04 10:21:12 +10:00
Josh Siviour 628fbbc0c3 fix: group-scope the OVS/OVN sockets and retire the vpcd sudoers grants (#609)
* fix: group-scope the OVS/OVN sockets and stop sudoing read-only probes

The OVS DB socket and both sets of ctl sockets were chmod 0666 by setup-ovn.sh,
with a systemd override re-applying it on every openvswitch-switch restart. Write
access to db.sock is full control of the local datapath, so this handed the
datapath to any account on the box. Both service users run with Group=spinifex,
so the access is now 0660 root:spinifex, /var/run/ovn is 0750, and a shared
helper re-applies it from ExecStartPost on openvswitch-switch and ovn-controller
alike — the latter is new, and matters because the ovn-controller ctl socket name
embeds the pid and is recreated on every start.

That also fixes the health probe reporting ovn-controller as not_running on a
healthy node. It shelled out to `sudo ovn-appctl`, which only spinifex-vpcd is
granted; as spinifex-daemon sudo demanded a password and the swallowed error read
as OVN being down. With the ctl socket group-owned the probe needs no privilege,
so health.go moves to a non-escalating Runner rather than the alternative of
granting the daemon a root-equivalent ovn-appctl rule to read a status.

ListIMDSTaps ran `list-ports` plus one `get` per patch port on vpcd's 15s tick,
so 1+N sudo invocations every tick, each one logging a pam_limits warning about
the core rlimit the unit deliberately pins to 0. It now issues a single JSON
query per pass, and the sudoers drop-in disables the PAM session for both service
users, which also leaves sudo children inheriting the unit's rlimits.

An absent iface-id on a patch port is now skipped with a warning instead of
aborting the pass: it is the only record of the full ENI, so such a port cannot
join the live set either way, and failing the pass stalled reconcile for every
healthy port behind it. A transient query failure still aborts.

* fix: group-own the OVS/OVN pidfiles too, and cover the ipsec ctl socket

Group-owning the ctl sockets was not enough for `ovn-appctl -t ovn-controller`:
it resolves the pid-named socket through the pidfile, and OVS opens that
O_RDWR to test the fcntl liveness lock, so a group-readable pidfile still fails
the probe with EACCES. The pidfiles now get the same 0660 root:spinifex, which
also tightens them from the 0644 they ship with.

openvswitch-ipsec joins the override list because setup-ovn.sh restarts it
after the sweep runs, leaving its ctl socket as the one file still at the
shipped mode.

Verified on the dev node: every socket and pidfile is 0660 root:spinifex and
survives a restart of all three units, an unprivileged user is refused, and
/health reports ovn-controller ok where the sudo probe read not_running.

* refactor: stop escalating the OVS/OVN socket clients

Now that setup-ovn.sh group-owns the control sockets, ovs-vsctl, ovs-appctl,
ovn-nbctl, ovn-sbctl, ovn-appctl and systemctl reach their daemons as the
service user. utils.NeedsPrivilege carries that policy and both command
builders consult it, so ip, iptables, dhcpcd, sysctl and arping still escalate
while the socket clients no longer do. Their sudoers grants are removed: each
took unrestricted args and all of them accept --log-file=PATH, so every one was
a root-equivalent grant handed out to run a query.

ovs-ofctl keeps its grant. It talks to a per-bridge <bridge>.mgmt socket that
ovs-vswitchd creates when the bridge appears, including bridges spinifex
creates at runtime, so the provisioning sweep cannot group-own it up front.
The NB and SB database sockets join the sweep for ovn-nbctl and ovn-sbctl.

vpcd carried its own sudoCommand copy that escalated unconditionally, bypassing
the policy entirely. It survived only because the grants existed and broke the
OVN flows-ready barrier the moment they were removed, so it now delegates to
utils.SudoCommand. TestRG10_SudoOnlyThroughThePolicy fails the build if another
package reintroduces a local copy.

Verified on the dev node: an instance launches, IMDS is served, the flows-ready
barrier completes, and no sudo denial appears anywhere in the journal.

* refactor: drop every spinifex-vpcd sudoers grant for ambient capabilities

vpcd held NOPASSWD grants for ip, iptables, sysctl and arping. The ip grant
alone was root-equivalent: sudoers cannot constrain its arguments, so
`sudo ip netns exec <ns> /bin/sh` was a root shell for the service account.

The unit already grants CAP_NET_ADMIN and CAP_NET_RAW ambiently, and the kernel
passes an ambient set to each child on exec, so those tools work as the service
user with no escalation at all. Verified on a live node: all sixteen ip
subcommands vpcd issues, plus iptables reads and writes, sysctl -w on the
net.ipv4.neigh tree, and arping, all succeed under exactly the unit's ambient
set. spinifex-vpcd now has no sudoers rules.

NeedsPrivilege had to become capability-aware to do this. spx is one binary
shared by both service units, and the daemon holds CAP_SYS_ADMIN and
CAP_DAC_OVERRIDE but no CAP_NET_ADMIN, so a static tool list cannot express
"vpcd runs ip directly, the daemon escalates it". The decision now reads CapAmb
from /proc/self/status once and matches it against the capability each
invocation needs. sysctl is resolved per key, since CAP_NET_ADMIN covers the
net.* trees and nothing else.

The dhcpcd grants go too: neither daemon invokes it. Only setup-ovn.sh, which
runs as the provisioning user, and the in-guest ecs-agent.

TestRG10_VPCDHoldsNoSudoersGrant pins both halves together, so a future grant
cannot be re-added without also explaining why the capability stopped working.

* chore: restore routeTree.gen.ts swept in by mistake

* fix: probe ovn-controller with ovn-appctl, not ovs-appctl

checkOVNController's first probe passed a bare -t ovn-controller to ovs-appctl,
which resolves it against OVS_RUNDIR — /var/run/openvswitch. ovn-controller's
socket and pidfile are in /var/run/ovn, so the probe could never succeed and
logged "ovn-controller.pid: open: No such file or directory" on every check.

Not a functional break: the next probe globs the full /var/run/ovn path and
succeeds, so the function still returned nil. It cost an exec per check and
made a healthy node look like it was failing an OVN liveness probe.

ovn-appctl defaults OVS_RUNDIR to /var/run/ovn, so the common case now matches
first. The glob and systemctl fallbacks stay for older layouts.
2026-07-30 17:33:24 +10:00
Josh Siviour a0659ae7d0 fix: gate ovn-controller on SB RAFT readiness and force recompute (#599)
Single-node OVN RAFT bring-up gated only on the Northbound DB socket, then
restarted ovn-controller without waiting for the Southbound RAFT to elect a
leader, serve clients, and for northd to write the gateway logical flows. With
no join step to absorb the boot window the controller attached mid-election,
programmed a partial datapath (SNAT ct-commit without output/delivery) and
never reconverged, so NAT-GW egress and EIP ingress intermittently black-holed
on the single-node baremetal CI host.

Add an SB readiness gate before ovn-controller starts (SB reachable and, when
clustered, an elected leader), and after ovn-controller restart wait for its SB
connection then force inc-engine/recompute to rebuild all OpenFlow from the
converged Southbound. Applies to 1/2/3-node RAFT alike.
2026-07-29 16:22:30 +10:00
Josh Siviour e1c4f85a36 feat: routed-NAT external mode with two-tier ingress (#475)
* feat(network): add routed uplink mode, Routed wiring, and NAT egress rule helper

* feat(external): route gateway LRP over transit pool and install VPC SNAT in routed NAT mode

* feat(vpcd): support bridge_mode=nat (routed uplink, transit pool, egress rules)

* feat(daemon): register EIP handlers unconditionally with disabled-mode stub; seed default subnet per external mode

* feat(admin): support --external-mode=nat and suggest it for non-bridgeable uplinks

* feat(scripts): add --nat-uplink routed mode to setup-ovn.sh

* test(e2e): add routed-NAT single-node natuplink suite

Covers the external_mode=nat lane end to end on a nat-initialized node:
host transit wiring (veth, br-ext port, ip_forward, iptables egress
rules), spinifex.toml contents, disabled EIP surface (empty
describe-addresses, UnsupportedOperation on allocate), default subnet
MapPublicIpOnLaunch=false, OVN gateway LRP + VPC SNAT on the transit
/24, guest outbound egress proven via a serial-console probe (nat mode
has no inbound path), and unique transit gateway IPs across VPCs.

Suite self-gates on external_mode=nat; registered as e2e-natuplink and
in SUITES_BUILD so it compiles in CI. Manifest entry stays commented
until CI can provision a nat-mode environment.

* feat(ovn): Address_Set CRUD and NAT exempted_ext_ips column

Adds the exempted_ext_ips column (optional strong Address_Set ref) to the
nbdb NAT model, Address_Set ensure/get with wait-op create semantics, and an
in-place SetNATExemptedExtIPs update on the client interface, live client,
and mock. Test NB schema gains the column and covers insert-resolves-UUID,
converge, clear, and missing-NAT paths.

* feat(policy): exempt address set on routed SNAT/EIP rows

Adds WithSNATExemptSet so routed mode stamps exempted_ext_ips (the
spinifex_nat_exempt Address_Set: transit /24 plus operator extras) on IGW
snat and EIP dnat_and_snat rows, keeping VM replies to host-initiated flows
un-NATted. AddSNAT gains an idempotency guard keyed on (router, VPC CIDR)
with stale-IP replacement, and both AddSNAT and the AddEIP idempotent-skip
path patch the ref in place on pre-existing rows. The set is a singleton
strong ref and is never deleted. Non-routed modes are unchanged.

* feat(host): VPC ingress route primitives for routed-NAT mode

EnsureVPCIngressRoute / RemoveVPCIngressRoute manage the host route that
sends VPC-CIDR traffic into OVN via the gateway LRP transit IP on the
spx-nat veth. Replace/del semantics keep both idempotent; a missing route
on removal is not an error.

* feat(external): routed ingress leg on IGW attach/detach, reconcile-safe

AttachIGW's routed leg now also installs the host VPC ingress route via
RoutedIngressHooks, and re-runs on the already-attached path so the
reconcile loop restores host routes (and patches legacy SNAT exempt refs)
after a reboot — OVN state survives restarts but host routes do not.
DetachIGW removes the route alongside the SNAT. vpcd wires the hooks and
the spinifex_nat_exempt set (transit /24 + [network] nat_exempt_cidrs,
validated nat-mode-only) exclusively in routed-NAT mode; pool/veth/direct
pass nil hooks and are unchanged.

* test(natuplink): Tier 1 host-ingress phase; docs for jumpbox pattern

New Phase 7 asserts the automatic ingress tier: host route to the VPC CIDR
via the gateway LRP transit IP, exempted_ext_ips ref on the SNAT row
pointing at spinifex_nat_exempt (containing the transit /24), and — after
opening the SG from the transit net (default-closed, AWS parity) — ping and
an sshd TCP handshake against the instance private IP from the host, which
proves the un-SNATted return path. Phase 8 additionally waits for the
second VPC's ingress route to appear on IGW attach. vpc-networking README
documents the jumpbox pattern, SG note, and nat_exempt_cidrs.

* feat(config,admin): public wan pool alongside nat-transit

Restructure admin config generation from single-pool scalars to a Pools
slice so nat mode can emit both the transit pool and an optional public
wan pool. nat mode now accepts --external-pool/--external-source (plus
--external-bind-bridge/--gateway-ip when a public pool is requested),
validated by the shared resolvePublicPoolFlags helper also used by pool
mode. Transit pool always renders first so the IGW allocator picks it.
Formation wire format unchanged (nat mode is single-node only).

* feat(daemon): enable EIP service and auto-assign in nat mode with public pool

External IPAM (and with it the real EIP service, RunInstances public IP
auto-assign, and MapPublicIpOnLaunch on default subnets) now activates
whenever public pools exist: pool mode as before, plus nat mode when a
wan pool rides alongside the transit segment. The transit pool is
filtered out of IPAM — its addresses are gateway-LRP plumbing, never
allocatable EIPs. Transit-only nat configs keep the disabled EIP stub.

* feat(host): per-EIP ingress primitives for routed-NAT mode

DetectUplinkFor parses ip route get to find the interface and source IP
facing the pool gateway (re-run per ensure: WiFi/cellular uplinks move).
EnsureEIPIngress steers an EIP into OVN with a /32 route via the VPC
gateway LRP transit IP (src-hinted so host-local traffic still DNATs),
answers ARP for the EIP with a proxy neighbor entry (L3 only, same MAC,
WiFi-safe), sends gratuitous ARP, and adds per-EIP FORWARD accepts for
DROP-policy hosts. RemoveEIPIngress mirrors; missing state tolerated.

* feat(policy,vpcd): host EIP binder option on NATManager

WithHostEIPBinder injects routed-mode host plumbing hooks. AddEIP binds
after priming on both the fresh-add and idempotent-skip paths (host
routes and proxy-ARP are volatile even when the OVN row survives, so
reconcile re-ensures them after reboot); DeleteEIP unbinds best-effort.
The next hop comes from the new gatewayPortIP helper reading the gateway
LRP's stamped spinifex:gateway_ip (Networks fallback), with the ext-ID
key now an exported policy const shared with the external package.

vpcd selects the IGW pool by name instead of index — with two pools in
nat mode the gateway allocator must stay on the transit pool — and wires
the binder over host.EnsureEIPIngress/RemoveEIPIngress when a public
pool is present. EnsureEIPIngress gains an uplink hint so dhcp-sourced
pools (gateway unknown until lease) proxy-ARP on their bind bridge.

* feat(dhcp): interface-MAC lease variant with MAC-keyed-router detection

dhcp_mac = "derived" (default) | "interface" on external pools. The
interface variant leases with the bind interface's own MAC — WiFi/WWAN
uplinks drop frames with foreign source MACs, so derived chaddr MACs
never complete DORA there. Option 61 stays the lease discriminator.
UseIfaceMAC threads AllocateRequest → NATS wire → nclient4 → lease and
persists through KV so restart re-acquires repeat it.

Routers that key leases on MAC and ignore client-id would hand every
lease the same IP; the manager detects an ACK matching the interface's
own address or another client-id's live lease, releases the colliding
lease, and hard-errors advising a static range instead.

admin init auto-writes dhcp_mac="interface" for nat-mode public dhcp
pools bound to non-bridgeable uplinks (wlan/wwan/ppp).

* test(natuplink)+docs: Tier 2 EIP ingress e2e phases and public-pool docs

The natuplink suite now detects a public (non-transit) pool in spinifex.toml
and switches lanes: Tier-1-only configs keep the EIP-disabled and
no-public-IP assertions; public-pool configs assert the EIP surface is
enabled, the default subnet has MapPublicIpOnLaunch=true, instances
auto-assign public IPs, and a new Phase 9 exercises the full EIP ingress
lifecycle — host /32 route via the gateway LRP, proxy-ARP on the uplink,
per-EIP FORWARD accepts, exempt-stamped dnat_and_snat, TCP handshake to the
EIP, reconcile replay across a vpcd restart, and teardown on disassociate.

Docs: vpc-networking README gains a public-pool section for routed-NAT nodes
(init flags, dhcp_mac=interface behaviour, host-to-EIP caveat) and an updated
mode comparison; COMMANDS.md notes nat-mode EIP support behind a public pool.

* fix(setup): whitelist iptables, neigh sysctl, and arping for spinifex-vpcd

Routed-NAT mode shells out to iptables for the transit masquerade and
per-EIP FORWARD accepts, tunes proxy_delay, and sends gratuitous ARP for
host-delivered EIPs. Without these sudoers entries vpcd crash-loops with
"command not allowed" on nat-mode nodes.

* fix(ovn): scope DeleteStaticRoute prefix match to the target router

Every VPC router carries a 0.0.0.0/0 static route, so an unscoped cache
match could grab another router's row and fail with a referential
integrity violation, wedging IGW attach on multi-VPC nodes. Match only
rows referenced by the target router, mirroring FindStaticRoute. Mock
updated to the same semantics, with a regression test covering drift
replacement across two routers.

* fix(reconcile): always replay AttachIGW so host ingress state is re-ensured

applyIGWs skipped AttachIGW whenever the gateway switch port existed in
actual state, so the already-attached re-ensure path never ran and
routed-NAT host ingress routes lost on reboot were never reinstalled.
AttachIGW is idempotent; run it unconditionally.

* fix(vpcd): resolve duplicate-CIDR host ingress route collisions, bootstrap VPC wins

Every account's default VPC shares 172.31.0.0/16, so Tier-1 host routes
collide on the single host route table and the last IGW attach silently
stole the route (route replace). Pass vpcID and the gateway LRP IP
through RoutedIngressHooks; the bootstrap VPC always installs its route,
other VPCs only install when the CIDR is free and only remove a route
their own gateway IP holds. Adds host.VPCIngressRouteVia to read the
current route holder.

* ci(e2e): add nightly cell 19 for routed-NAT single-node suite

Cell 19 bootstraps with --external-mode=nat plus the CI static pool as
the public wan pool and runs the natuplink suite, covering the Tier-1
transit datapath and Tier-2 EIP ingress. The run step exits 0 when
natuplink.test is absent from the tests tar so scheduled runs against
branches predating the suite stay green.

* fix(admin): nat-mode init summary reflects configured public pool

The summary printed 'outbound-only — no public IPs/EIPs' even when
--external-pool/--external-source configured a public wan pool. Print
the pool range (or dhcp bind) and note EIPs are enabled.

* fix(eip,vpc): thread ctx through disabled EIP stub and NAT call sites

Reconcile the routed-NAT branch with dev's ctx-first service APIs after
rebase: DisabledEIPService and its tests take ctx to satisfy the EIPService
interface, the vm_adapters public-IP resolver asserts the ctx-signed
AssociatedPublicIPForInstance, and the default-subnet mapping test threads
ctx into DescribeSubnets.
2026-07-09 09:43:32 +10:00
Josh Siviour da33e574d4 fix: OVN RAFT multi-node bring-up (northd member list, ExecStop, add-nat deadline) (#466)
* fix: repoint DB-node ovn-northd at RAFT member list; extend add-nat deadline

Two related fixes for multi-node OVN clusters:

- setup-ovn.sh (mulga-siv-504): in the clustered --management branch, point
  ovn-northd's client NB/SB connections at the full RAFT member list derived
  from OVN_REMOTE, so the active northd follows the leader instead of dialing
  its local member only. Without this, northd stops advancing SB_Global.nb_cfg
  once leadership moves off the node, wedging the ovn-nbctl --wait=hv barrier.
  Guarded on a real member list so the standalone single-DB-node path is
  unchanged.

- utils/nats.go (mulga-js-206): raise the add-nat request deadline from 10s to
  45s so the client no longer rolls back before the server-side --wait=hv flows
  barrier (30s) completes.

* fix: stop ovn-northd restart from tearing down split NB/SB ovsdb servers

The packaged ovn-northd.service ExecStop runs 'ovn-ctl stop_northd' without
--ovn-manage-ovsdb=no, so restarting northd to apply OVN_CTL_OPTS also stops the
separately-managed NB/SB ovsdb-server units. On a clean clustered bring-up this
races the freshly-started DBs and kills them, so setup-ovn's wait for the NB
socket times out and the RAFT create/join aborts. Install an ovn-northd.service
drop-in overriding ExecStop with --ovn-manage-ovsdb=no so northd never touches
the DB lifecycle (mulga-siv-504).
2026-07-09 09:43:30 +10:00
Josh Siviour 0823bf8c16 feat: OVN OVSDB RAFT clustering for multinode Spinifex (epic mulga-siv-486) (#458)
* feat: add OVSDB RAFT cluster primitives to setup-ovn.sh

Add --db-cluster-local-addr / --db-cluster-remote-addr flags so a
management node can run the OVN NB/SB databases as a native OVSDB RAFT
cluster instead of a single non-clustered ovn-central. When a local addr
is given, write a shared OVN_CTL_OPTS to /etc/default/ovn-central (NB
RAFT 6643 / SB RAFT 6644) and restart the per-DB units directly, since
the ovn-central aggregator is ExecStart=/bin/true and won't restart its
children. Empty remote addr creates the cluster (init node); a set remote
addr joins it. NB/SB client set-connection runs only on the create node
(RAFT replicates it cluster-wide).

The single-node --management path is unchanged when no cluster addrs are
supplied, so dev boxes and existing single-node clusters keep working.
--ovn-remote already passes through verbatim, so a comma-separated SB
endpoint list works for compute nodes; documented in usage.

* feat: OVN client multi-endpoint failover for RAFT clusters

Accept a comma-separated OVN NB/SB endpoint list so vpcd can target a
clustered DB. config.ParseEndpoints splits the list (trimming whitespace,
dropping empties); live.go Connect passes one libovsdb WithEndpoint per
endpoint, so the client tries them in order, fails over on disconnect, and
follows RAFT leader redirects. Single-endpoint strings still yield one
endpoint, so single-node dev is unchanged.

ovn-sbctl --db= already accepts the raw comma list, so the SB CLI
consumers (discoverChassis, gateway_claim) need no change.

* feat: write clustered OVN NB/SB endpoints across the RAFT quorum

spx admin init/join now emit comma-separated OVN NB/SB endpoint lists for
the first three quorum nodes (formation.BuildOVNDBAddrs) instead of loopback
or a single leader address, so vpcd fails over across the cluster.

firstboot defers OVN bring-up to the provisioning controller when it owns
formation (SkipFormation): a standalone single-node .db would otherwise block
the controller's clustered create/join.

* test: add multinode OVN RAFT cluster + failover e2e; document clustered topology

ovn_raft_test.go asserts NB/SB cluster/status reports a 3-server quorum with
one leader on every DB node, then stops the NB leader's ovn-central and proves
an NB write still lands via a surviving endpoint.

Docs: vpc-networking gains the multi-endpoint vpcd config and a RAFT
cluster-status debugging section; network-connections lists the 6643/6644 RAFT
ports.
2026-07-09 09:43:29 +10:00
Josh Siviour fd3dc6b680 feat(network): ADR-0006 layer redesign + IPsec/OVN hardening (#255)
* refactor(vpcd): remove macvlan bridge mode

Macvlan was a single-NIC SSH-safe hack that predated veth mode and was
never selected by any active config path. Deletion is Phase 0 item 1 of
the network layer redesign (mulga-siv-125.1).

Removed:
- BridgeModeMacvlan const + setMacvlanMAC + ifaceIsMacvlan probe
- Macvlan MAC alignment block in launchService (only fired on dead path)
- Macvlan branch in detectBridgeMode + matching tests
- Macvlan duplicates of IGW/AddNAT centralized-NAT tests (veth versions
  already cover the same path)
- --macvlan flag + macvlan case branch in setup-ovn.sh

Refactored:
- useCentralizedNAT() now == BridgeModeVeth (was != BridgeModeDirect);
  verifyBridgeMode already rejects empty/unknown at startup
- Three IGW-pool tests now explicitly WithBridgeMode(BridgeModeVeth)
  (previously relied on empty-mode defaulting to centralized)

Kept intentionally:
- Deprecation notes in docs/compute/vpc-networking/README.md
- Legacy macvlan-interface cleanup in reset-dev-env.sh + ansible
  teardown role (migration for operator systems with stale spx-ext-*
  interfaces from pre-veth installs)

* feat(vpcd): resolve external CIDR at startup with bounded retry

Block service start until the WAN bridge has an IPv4 address, with a 30s
retry window. Phase 0 item 2 of the network layer redesign
(mulga-siv-125.1). Guards the boot race where vpcd starts before
systemd-networkd finishes DHCP on br-wan, or before netplan applies a
static config.

Skipped when ExternalMode is empty (overlay-only deployments).

Forward-compatible with ADR-0006: the new resolveExternalCIDR /
externalCIDRFromBridge helpers become the backing implementation of
HostWiring.ExternalCIDR() once the network/host package lands in Phase 1.
Until then the resolved value is only used to fail-start on missing
uplink.

* fix(vpcd): cover external CIDR startup paths

Extract launchService's CIDR-resolve block to ensureExternalCIDRReady
helper so it's unit-testable, and add direct tests for
externalCIDRFromBridge (loopback + unknown-interface) to exercise the
original literal body. Closes the diff-coverage gap on Phase 0 commit
15b564d which left these paths unreachable from unit tests.

* refactor(network/ovn): extract L1 OVN client to network/ovn package

Move OVNClient interface, LiveOVNClient, ACLSpec, ErrNATNotFound and
namedUUID helper from services/vpcd to a new spinifex/network/ovn
package. The mock relocates to spinifex/network/ovn/mock as a
sub-package. Storage fields on the mock become exported so vpcd tests
can continue to seed/inspect state across the new package boundary.

services/vpcd retains thin type-alias and var-alias shims so existing
callers compile unchanged; Phase 2 removes those shims as vpcd is torn
down.

Adds -coverpkg=./spinifex/... to test-cover so cross-package test
exercise of mock methods continues to count toward coverage now that
the mock lives outside vpcd.

First sub-step of Phase 1 of docs/development/feature/spinifex-network-redesign.md
(bead mulga-siv-125.2). Pure refactor; no functional change. All
existing tests pass; preflight green.

* feat(network/topology): TopologyManager interface + vpcd adapter

Add spinifex/network/topology with Manager interface, VPC/Subnet/Port
specs, and OVN object naming helpers covering the L2 stable contract
(§7 of the redesign plan). Phase 1 keeps existing in-tree OVN names
(rtr-, ext-port-, sg_) and notes the §7.3 targets for a later
reconciliation migration.

TopologyHandler in services/vpcd grows EnsureVPC / DeleteVPC /
EnsureSubnet / DeleteSubnet / EnsurePort / DeletePort /
SetPortSecurityGroups methods that mirror the corresponding NATS
handlers' OVN ops with Spec inputs instead of nats.Msg envelopes,
satisfying topology.Manager via a compile-time check. Existing handlers
are unchanged; the duplication is short-lived (Phase 2 collapses them).

Smoke tests in topology_manager_test.go cover the idempotent create
path, delete cascade, and declarative SG membership move. Deliverable:
TopologyManager.EnsureVPC/Subnet/Port callable; all existing tests
green.

Second sub-step of Phase 1 of docs/development/feature/spinifex-network-redesign.md
(bead mulga-siv-125.2).

* feat(network/host): L0 HostWiring interface + physical/veth impls

Phase 1 deliverable for mulga-siv-125.2. Introduces network/host (L0 of
ADR-0006): UplinkMode enum, Wiring interface, and Physical/Veth
implementations with injectable Runner + InterfaceReader for testability.
Not yet wired into daemon/vpcd — Phase 2 replaces daemon.SetupComputeNode
and vpcd's resolveExternalCIDR with calls through this package.

* feat(network/policy): L3 SecurityGroup/NAT/Route managers

Introduce network/policy as the data-plane policy layer (ADR-0006 L3).
Three managers, all backed by network/ovn:

- SecurityGroupManager: clear+add ACL replacement on an existing port
  group; port group lifecycle stays with L2 (topology.Manager).
- NATManager: bound to one NATMode at construction (derived from
  host.UplinkMode). Distributed sets logical_port/external_mac on EIP
  dnat_and_snat rules; centralised leaves them unset. Per-EIP, NAT GW,
  and IGW-default SNAT entrypoints; all deletes idempotent.
- RouteManager: AddStaticRoute is read-then-decide so retries no longer
  duplicate rows (closing the long-standing non-idempotency bug in
  vpcd/topology.go's IGW default-route path).

ACL priority constants and infrastructure ACL builders move from
vpcd/{security,acl}.go into policy/acl.go with their semantics preserved
(default-deny 900/800 logged, DHCP-allow 1050, tenant 1000). No vpcd
wiring changes here — additive only; the reconciler (bead .3.2) and
network/external (bead .3.4) will consume these managers.

bead: mulga-siv-125.3.1

* feat(network/external): L5 IGW/EIP/NATGW managers

Pure additive — new package, no topology.Manager changes, no rewiring of
existing vpcd handlers. IGWManager builds the external switch + localnet +
gateway LRP + default route + chassis HA, with a flows barrier callers can
inject (production: ovn-nbctl --wait=hv sync). EIP/NATGW are thin L5
wrappers over policy.NATManager. GatewayIPAllocator interface lets the
DHCP-backed allocator stay in vpcd until the DHCP-mgr removal bead lands;
LinkLocalAllocator + StaticRangeAllocator ship here.

* feat(network/reconcile): L6 intent-actual reconciler replaces 5-pass startup

Build spinifex/spinifex/network/reconcile/ package per Phase 2.2 of the
network layer redesign. Reads desired state from NATS KV filtered by
vpc.AZ (with legacy empty-AZ matches-all rule), scans actual state from
OVN NB DB, diffs and applies with VPC → Subnet → Port → SG → IGW →
EIP/NATGW topological ordering.

Atomic port-group join via CreateLogicalSwitchPortInGroups closes the
racy gap the legacy scanENIPortMembership pass used to revive 30s later.
A 5-minute drift goroutine (leader-gated via JetStream KV CAS) replaces
the old 30s ReconcileSGsLoop.

Adds AZ field to VPCRecord stamped at create time. Empty AZ on pre-Phase
2.2 records matches every local AZ, so no migration pass is required.

Replaces and removes the 5-pass startup sequence in services/vpcd:
  - Reconcile + ReconcileFromKV
  - ReconcileSGsOnce + ReconcileSGsLoop
  - RetrofitAllExternalLocalnetOptions
  - RetrofitAllGatewayPortNetworks

IGW fresh-create continues to flow through the legacy NATS handler path
(handleIGWAttach) so the dhcpManager wiring stays intact until Phase
2.3; the reconciler only rebinds gateway-chassis on existing IGW
topology.

Closes mulga-siv-125.3.2.

* refactor(network/topology): promote live Manager impl to network/topology

Move the topology.Manager implementation out of services/vpcd/topology_manager.go
into network/topology/manager_live.go as a standalone liveManager constructed
via NewLiveManager(ovn.Client, opts...). Inputs that varied per-handler
(DNS server resolution from the external pool) are now passed as functional
options (WithDNSServer).

TopologyHandler still satisfies topology.Manager but its methods delegate
to a cached liveManager. The shim stays until the rest of mulga-siv-129
routes NATS subscribers through topology.Manager directly.

Also exports SubnetGatewayCIDR + FormatDNSServerList from network/topology
so the reconciler in network/reconcile can share helpers with the live
manager (audit pass to follow per plan §6).

Test cases ported one-for-one from services/vpcd/topology_manager_test.go
to network/topology/manager_live_test.go; the vpcd-side test file is
deleted. New WithDNSServer test asserts the option propagates into
DHCPOptions rows.

Refs mulga-siv-129 (Phase 2.6 vpcd subscriber migration, Slice 1 of N).

* refactor(vpcd): collapse SG subscribers onto network/{topology,policy} managers

Phase 2.6 / mulga-siv-129 slice 2. Rewrites the vpc.create-sg /
vpc.update-sg / vpc.delete-sg NATS subscribers in services/vpcd as
thin wrappers over topology.Manager (port group lifecycle) and
policy.SecurityGroupManager (ACL programming). Deletes the ~1000
lines of duplicated ACL builder and provisioning logic — its
authoritative copy lives in network/policy.

Surface additions:

- ovn.ErrPortGroupNotFound sentinel; mock + live GetPortGroup wrap
  not-found via fmt.Errorf("%w: ...") so callers can use errors.Is.
- topology.Manager grows EnsureSGPortGroup / DeleteSGPortGroup
  (resolves the apply.go TODO from §2.1 of the redesign plan).
  liveManager implements them with GetPortGroup-then-Create /
  GetPortGroup-then-Clear+Delete idempotency.

Behaviour delta: the old provisionSG rolled back the OVN port group
on AddACLs failure ("all-or-nothing"). The new path lets the port
group survive and relies on network/reconcile to retry EnsureSG on
its next sweep. The all-or-nothing fail-fast test cases are dropped;
ACL emission semantics are covered by network/policy/sg_test.go.

* refactor(vpcd): migrate VPC/Subnet/ENI subscribers to topology.Manager

Phase 2.6 / mulga-siv-129 slice 3. Rewrites vpc.create / vpc.delete /
vpc.create-subnet / vpc.delete-subnet / vpc.create-port /
vpc.delete-port / vpc.update-port-sgs NATS subscribers as thin
wrappers (≤30 lines each) over topology.Manager. Subscriber bodies
now: parse event → translate to spec → delegate to manager.

Deletes:

- vpcd.subnetGateway (and helpers_test.go + topology_test.go's
  TestSubnetGateway block); parity coverage lives in
  network/topology.TestSubnetGatewayCIDR.
- vpcd.reconcilePortSGs (the live manager already exposes the same
  diff-then-transact via reconcilePortSGs on the L2 side).
- vpcd.TopologyHandler.dnsServer; lmDNSServer (passed via
  topology.WithDNSServer to the live manager) is the live path.

Behaviour delta: handlers now strict-parse PrivateIpAddress /
MacAddress / CidrBlock at the NATS boundary and reject malformed
payloads instead of degrading to "no DHCP options". The reconciler
guarantees that field validity is upheld upstream of the publish.

* refactor(network/reconcile): drive SG port groups via topology.Manager

applySGs now calls topology.Manager.EnsureSGPortGroup /
DeleteSGPortGroupByName instead of reaching directly into the OVN client.
Reconcile.Config gains a Topology field (required); the production caller
in services/vpcd passes the TopologyHandler shim, the reconcile package
tests construct a fresh topology.NewLiveManager bound to the mock OVN
client.

DeleteSGPortGroupByName is added to the topology.Manager interface for the
reconciler's orphan-removal path, which iterates raw OVN port-group names
without a groupID round-trip. The existing DeleteSGPortGroup(groupID)
delegates to it.

Resolves the TODO at apply.go:137 carried over from slice 2 of
mulga-siv-129.

* feat(network/policy): add FlowsBarrier option to NATManager

NATManager.AddEIP needs to block on `ovn-nbctl --wait=hv sync` after
writing the dnat_and_snat row so the NATS reply only returns once every
chassis has the rewrite flow. The legacy vpc.add-nat handler does this at
the tail of handleAddNAT; the manager has lacked it since slice 2.1.

NewNATManager grows a functional-options tail (Option / WithFlowsBarrier).
Defaults to a no-op for tests; production wiring in services/vpcd passes
waitForFlowsHV. AddEIP now invokes the barrier after AddNAT, logging at
warn level on failure to match the legacy handler's _ = waitForFlowsHV()
swallowing semantics.

Pre-work for slice 4 of mulga-siv-129 — without the barrier the NAT EIP
subscriber migration would lose the post-write flow-install gate.

* refactor(vpcd): migrate NAT GW subscribers to policy.NATManager

handleAddNATGateway / handleDeleteNATGateway now decode the NATS event
and delegate to policy.NATManager.{AddNATGateway,DeleteNATGateway}. The
manager carries identical OVN logic — same snat type, same ExternalIDs
(spinifex:vpc_id + spinifex:nat_gateway_id) — so existing
TestTopologyHandler_AddNATGateway / DeleteNATGateway suites stay green.

Lazy-constructed NATManager added on TopologyHandler (natmOnce). Mode is
derived from the bridge mode (veth → centralized, direct → distributed)
and the FlowsBarrier is bound to waitForFlowsHV for parity with the
legacy EIP path's tail barrier (used by the next slice, vpc.add-nat).

Slice 4 of mulga-siv-129, sub-step b.

* refactor(vpcd): migrate EIP NAT subscribers to policy.NATManager

handleAddNAT / handleDeleteNAT now decode the NATS event and delegate to
policy.NATManager.{AddEIP,DeleteEIP}. The behavioural contract is
preserved end-to-end:

- Idempotency-skip on a matching dnat_and_snat row (same VPC + LogicalIP,
  plus MAC + LogicalPort under distributed NAT) moves into AddEIP so
  duplicate vpc.add-nat publishes never tear down the rule the previous
  invocation just installed (mulga-siv-124).
- Stale-rule cleanup across every router stays in AddEIP.
- Post-write waitForFlowsHV barrier is now driven by the manager via the
  FlowsBarrier option wired in services/vpcd (slice 4a).
- DeleteEIP returns nil on ErrNATNotFound, matching the handler's
  fire-and-forget "already absent = success" semantic.

The vpcd "errors" import drops out with the inline error-comparison.

Slice 4 of mulga-siv-129, sub-step c.

* refactor(vpcd): migrate IGW subscribers to external.IGWManager (partial)

handleIGWAttach now branches at decode time:
- Centralised NAT + DHCP-sourced pool keeps using attachIGWLegacy because
  the gateway-LRP IP comes from vpc.dhcp.acquire, and that DHCP client is
  the vpcd-local manager that bead mulga-siv-125.3.3 will retire.
- All other shapes (distributed NAT, static-range pool, no pool)
  delegate to external.IGWManager.AttachIGW. The manager mirrors every
  step the legacy handler ran — external switch + localnet port +
  gateway LRP + switch-side router peer + default route + chassis HA +
  waitForFlowsHV tail barrier — so observable behaviour is unchanged.

handleIGWDetach drops its inline OVN walk entirely; both paths exit
through external.IGWManager.DetachIGW followed by releaseGatewayLRPLease.
The lease release stays in vpcd because the upstream client lives in
services/vpcd/dhcp; calling it after every detach is safe because the
upstream server expires unknown leases on its own.

Lazy-constructed IGWManager added on TopologyHandler (igwmOnce). Pool,
allocator (StaticRangeAllocator), chassis, NAT mode, NAT manager, route
manager, and FlowsBarrier are all derived from the existing
TopologyHandler state.

The DHCP-coupled legacy branch retains its full inline OVN logic; it
will disappear in slice-after-125.3.3 follow-on. Slice 4 of
mulga-siv-129, sub-step d.

* feat(ec2/instance): honor AssociatePublicIpAddress per-NIC override

RunInstances --network-interfaces "AssociatePublicIpAddress=true|false"
was silently ignored, only subnet.MapPublicIpOnLaunch gated public IP
assignment. AWS contract is per-NIC override wins.

Extend TestPrepareRunInstances_PublicIPAutoAssigned to table-driven
3 cases: subnet true no-override, subnet false override true, subnet
true override false.

* refactor(config): drop upstream-DHCP config surface (static WAN pool only)

Hard-error in LoadConfig on legacy keys: [network] external_dhcp,
[nodes.<n>.vpcd] dhcp_bind_bridge, and [[network.external_pools]]
source = "dhcp". Add pool range validation (must fit inside the
gateway/prefix_len CIDR; per-cluster non-overlap).

Strip ExternalDHCP from config.NetworkConfig + formation.NetworkConfig
+ admin.ConfigSettings, and DhcpBindBridge from config.VPCDConfig +
admin.ConfigSettings + vpcd.Config. vpcd.ExternalPoolConfig.IsDHCP()
short-circuits to false; the field and downstream DHCP branches in
external_ipam / topology.go remain for Slice C to delete together with
dhcp_manager.

cmd/spinifex/cmd/admin.go: drop useExternalDHCP path and the
detectedDhcpBindBridge helper; require --external-pool when
--external-mode=pool; auto-detect default no longer infers source=dhcp.

service.go's wan_bridge legacy-key rejection now advises removing the
key entirely (vpcd auto-detects br-wan), not renaming to
dhcp_bind_bridge.

Two topology_test cases that exercise the DHCP gateway-LRP path are
skipped — Slice C deletes attachIGWLegacy and these tests together.

* refactor(vpcd): delete dhcp_manager + DHCP gateway-LRP path (Slice C)

Removes upstream-DHCP-client gateway-LRP allocation in favor of static
WAN-pool allocation (StaticRangeAllocator). Part of bead mulga-siv-125.3.3.

- delete services/vpcd/dhcp_manager.go + dhcp/ subpackage (~865 lines)
- delete allocateGatewayLRPIPViaDHCP + releaseGatewayLRPLease paths
- drop ExternalPoolConfig.Source + DhcpBindBridge + IsDHCP() fields
- drop ExternalIPAllocation lease fields (Expiry/ServerID/HWAddr) and
  ExternalIPAMRecord.Source
- drop NewExternalIPAM nc *nats.Conn argument; update all 4 call sites
- rename verifyBridgeMode local dhcpBindBridge -> wanBridge; update error
  strings and tests

Slice D (delete attachIGWLegacy + dispatcher) intentionally deferred.

* refactor(vpcd): delete attachIGWLegacy + IsDHCP stub (Slice D)

Closes mulga-siv-129 slice 4d. Part of bead mulga-siv-125.3.3.

handleIGWAttach now unconditionally delegates to external.IGWManager.
attachIGWLegacy (~207 lines, ~5 OVN write steps + chassis scheduling)
deleted along with its dispatcher branch in handleIGWAttach. The
ExternalPoolConfig.IsDHCP() dead stub is gone.

No code paths or NATS subjects regress: the static-pool / distributed
branches were already going through external.IGWManager since Slice 4d
(6719dc3).

* feat(ipam): Purpose field on every IPAM record (Slice B)

Part of bead mulga-siv-125.3.3.

Adds a Purpose enum (handlers/ec2/vpc/purpose.go) tagging every IP
allocation with its semantic role (eni-primary, eni-public, eip,
igw-lrp, natgw-external, …) so multi-VPC clusters can reclaim/audit
by (owner, purpose).

External IPAM (spinifex-external-ipam, v1→v2):
- ExternalIPAllocation.Type → .Purpose; legacy values mapped via
  LegacyExternalTypeToPurpose (gateway→igw-lrp, auto_assign→eni-public,
  elastic_ip→eip). Unknown legacy values warn and become "unknown".
- AllocateIP / AllocateFromPool / allocateFromPool param rename
  allocType→purpose. All call sites pass Purpose* constants.
- migrate/002_external_ipam_purpose.go: idempotent CAS-retry migration
  with v1/v2-union record shape so partial migrations resume cleanly.

Internal IPAM (spinifex-vpc-ipam, v1→v2):
- IPAMRecord.Allocated []string → []IPEntry{IP, Purpose, OwnerID}.
- AllocateIP gains purpose+ownerID args; ReleaseIP unchanged (still
  keyed on IP).
- AllocatedIPs returns []IPEntry.
- eni.go reorders eniId generation before AllocateIP so the owning
  resource ID lands on the new entry.
- migrate/003_ipam_purpose.go: cross-bucket backfill that reads the
  ENI bucket via the new RunKVWithJetStream path. Orphaned IPs
  (no owning ENI) warn and become Purpose=unknown.

Migrate framework:
- KVContext gains an optional JetStream field; new
  Registry.RunKVWithJetStream method threads it through. RunKV
  signature unchanged — all other callers are unaffected.

Tests:
- ipam_test.go: AllocateIP signature updates; AllocatedIPs now asserts
  IP / Purpose / OwnerID on the returned entries.
- external_ipam_test.go: replaces "auto_assign"/"elastic_ip" literals
  with PurposeENIPublic/PurposeEIP and asserts alloc.Purpose.
- migrate/002 + 003 tests: schema-detect, idempotent rerun,
  no-JetStream fallback, empty bucket.

* refactor(daemon): tombstone obsolete spinifex-dhcp-leases KV bucket

The dhcp_manager removed in Phase 2.3 (bead mulga-siv-125.3.3) owned the
spinifex-dhcp-leases KV bucket. The migrate framework only handles
per-bucket schema version bumps, not bucket deletion, so the obsolete
bucket would linger on upgraded clusters.

Add a one-shot tombstone after initJetStream that deletes the bucket if
present. DeleteKVBucketIfExists treats ErrBucketNotFound and
ErrStreamNotFound as success, so the call is idempotent across restarts.

* feat(config): add network.ipsec_enabled cluster flag (default true)

Add IPSecEnabled to NetworkConfig in both the cluster TOML schema and
the formation handshake payload. Default true so AWS-parity intra-AZ
encryption is on by default. Operators can flip false in
[network] for trusted single-rack lab topologies.

Phase 2.5 (bead mulga-siv-125.3.5) consumes the flag from admin init
(strongSwan provisioning), formation server (propagates to joiners),
and daemon startup (ovs-vsctl ipsec_encapsulation toggle).

* feat(admin): IPsec peer cert generator signed by cluster CA

Add GenerateIPSecPeerCert + IPSecCertPaths in spinifex/admin so admin
init (and the future admin add-node path) can issue per-node IKEv2 peer
credentials signed by the existing cluster CA. The cert carries
id-kp-ipsecIKE (RFC 4945) so strongSwan accepts it as an IKEv2 peer
credential when ovs-monitor-ipsec materialises tunnel configs.

Cluster CA is reused directly — no intermediate strongSwan PKI today;
when intermediate CAs land that becomes a separate workstream.

The cert/key pair lives under {configDir}/ipsec/peer.{pem,key}; the
daemon points OVS Open_vSwitch.other_config (certificate, private_key,
ca_cert) at these paths when network.ipsec_enabled is true.

* feat(admin): wire IPsec peer cert into admin init + join paths

Add --ipsec bool flag (default true) on adminInitCmd. Single-node init
and the multi-node leader path both emit an IPsec peer cert after the
existing CA+server-cert generation. The multi-node formation server
propagates the IPSecEnabled flag to joining nodes via NetworkConfig;
admin join honours it and emits its own peer cert during the same
cert-issuance step that already produces the server cert.

spinifex.toml template gains an unconditional [network] block carrying
ipsec_enabled so the value is visible to operators on every install
regardless of whether external networking is configured. The daemon
reads it via cluster config (NetworkConfig.IPSecEnabled).

Bead mulga-siv-125.3.5.

* build: install openvswitch-ipsec for OVN native IPsec

openvswitch-ipsec provides ovs-monitor-ipsec, which reads the
Open_vSwitch.other_config cert/key/CA pointers and materialises
strongSwan configs for every Geneve tunnel managed by ovn-controller.
Pulls in strongswan + strongswan-pki as transitive deps.

Required by bead mulga-siv-125.3.5.

* feat(daemon): enable OVN native IPsec on intra-AZ Geneve at startup

When network.ipsec_enabled is true (default), the daemon points the
local OVS DB other_config at the per-node IPsec peer cert that admin
init / admin join provisioned (configDir/ipsec/peer.{pem,key} + the
cluster CA at configDir/ca.pem), then sets
other_config:ipsec_encapsulation=true.

ovs-monitor-ipsec (shipped by the openvswitch-ipsec package) consumes
those pointers and materialises strongSwan configs for every Geneve
tunnel ovn-controller programs — including OVN-IC inter-AZ tunnels
when federation lands in Phase 3a.

Missing cert files log a warning and leave Geneve plaintext; operators
upgrading an older cluster reissue certs via spx admin to close the
gap.

Bead mulga-siv-125.3.5.

* test(e2e): multinode IPsec wiring + xfrm SAs + ESP capture

TestMultinodeIPSec asserts:
- OVS DB on every node carries certificate/private_key/ca_cert pointers
  and other_config:ipsec_encapsulation=true (what daemon.enableOVNIPSec
  writes).
- ip xfrm state on every node has at least one AEAD SA in AES-GCM mode
  (rfc4106(gcm(aes)) or gcm(aes)) within 90s.
- tcpdump catches ESP (ip proto 50) on the underlay (best-effort —
  logged only; geneve may be idle during the 5s capture window).

Skips cleanly when the cluster was bootstrapped with --ipsec=false
(no ipsec_encapsulation key on first node).

Read-only over SSH; runs in the parallel bucket alongside the other
non-mutating multinode tests.

* fix(igw): write attachment State="attached" for AWS parity

Reconciler intent loader (network/reconcile/intent.go::loadIGWs) filters
IGW records with `State == "attached"`, but AttachInternetGateway was
writing `State = "available"`. The reconciler therefore never picked up
any attached IGW — `intent_igws=0` on every pass — so the OVN external
switch + gateway LRP + WAN bridge wiring built by IGWManager.AttachIGW
never ran for default-VPC IGWs (whose live `vpc.igw-attach` publish at
daemon bootstrap is lost — vpcd subscriber not yet wired).

Net effect on single-node e2e: every SSH probe to 192.168.x public IPs
timed out (TestSSHProbe, TestModifyInstanceAttribute, TestRebootInstance,
TestNATGateway, TestSGToSGDatapath) because SNAT/DNAT rules on the VPC
router had no path to the external network.

Match AWS InternetGatewayAttachment.State semantics:
 - Attach: State="attached"
 - Detach: State="detached"

Detach value is internal — recordToEC2 gates Attachments on VpcId != "",
so the detached State is never surfaced to API consumers.

Bead: mulga-siv-131

* fix(reconcile): call AttachIGW when IGW topology missing

applyIGWs previously deferred to the NATS handler when an intent IGW
had no external switch in OVN. When the vpc.igw-attach event is lost
(bootstrap-time default-VPC IGW published before vpcd subscriber is
ready), deferral never resolves and VM public-IP traffic dies.

Call IGWManager.AttachIGW directly — it is idempotent (short-circuits
when the external switch already exists), so the reconciler converges
default-VPC IGWs on first pass without duplicating work on subsequent
passes.

Closes mulga-siv-132.

* fix(test): align NewExternalIPAM call with 2-arg signature

Rebase onto dev pulled in daemon_system_instance_test.go which used
the legacy 3-arg NewExternalIPAM(jsNC, js, pools). The feature branch
already narrowed the signature to (js, pools) via the upstream-DHCP
config drop; align the test with the current signature.

* fix(vpcd): EnsureSubnet must EnsureVPC first to avoid NATS race

vpc.create-vpc and vpc.create-subnet are independent NATS events with
no inter-event ordering guarantee. Tenant bootstrap on iam.account.created
publishes both within <1ms, so the subnet handler's
CreateLogicalRouterPort can race the parent VPC's CreateLogicalRouter and
fail with "logical router not found". The cascade fails CreateNetworkInterface
which fails RunInstances which surfaces as InsufficientInstanceCapacity to
the SDK — masking the underlying topology race.

handleSubnetCreate now calls EnsureVPC(VPCID-only) before EnsureSubnet.
EnsureVPC short-circuits on existing LR (idempotent), so the race-winning
vpc.create-vpc handler's full CIDR/VNI ExternalIDs are preserved; if subnet
wins the race the LR is created with bare ExternalIDs (cosmetic) and the
follow-on vpc.create-vpc short-circuits.

Adds TestIntegration_SubnetBeforeVPC regression covering both orderings.

Closes mulga-siv-133.

* feat(ansible): require --external-pool, drop NAT, forward EXTRA_VARS

spx admin init now rejects --external-mode=nat and demands --external-pool
when mode=pool. The ansible init role silently skipped pool flags when the
range was unset, so installs fell over inside the spx validator. Make
targets also swallowed `-e` (make's env-override flag), so operators could
not override pool start/end without editing defaults.yml.

- vars/defaults.yml: rename nat_gateway_ip → external_gateway_ip; add
  spinifex_external_no_external opt-out; document the spx flag contract.
- roles/init/tasks/main.yml: drop NAT branch; assert pool range upfront
  with a fail_msg pointing at EXTRA_VARS / defaults.yml; emit gateway,
  prefix-len, gateway-ip only when explicitly set (let spx auto-detect);
  honour --no-external.
- playbooks/dev-reset.yml: rename captured var; coerce legacy
  external_mode=nat to pool with a warn; tighten gateway regex with \b.
- Makefile: ansible-dev-* targets now forward EXTRA_VARS="key=val ..."
  through --extra-vars so `make` callers can override without editing
  defaults.yml.
- scripts/ansible/README.md: document pool requirement, both invocation
  styles (direct -e vs make EXTRA_VARS), NAT removal.

* fix(ipsec): guard ipsec_encapsulation on ovs-monitor-ipsec liveness

enableOVNIPSec set OVS cert pointers + ipsec_encapsulation=true without
ensuring ovs-monitor-ipsec.service was running. Without that daemon, OVS
holds the cert pointers unused, strongSwan never gets IKE config, and
tunnel traffic ovn-controller marks for encryption gets silently
dropped. TestMultinodeIPSec fails on `node1 xfrm has no AEAD SAs`.

- systemd: spinifex-daemon Wants=/After= ovs-monitor-ipsec.service
- daemon: ensureOVSMonitorIPSecActive — systemctl enable --now +
  is-active poll; refuses to flip ipsec_encapsulation if daemon is dead
- daemon: single-node short-circuit — no peers means no tunnels means
  the flag is at best inert and at worst load-bearing-silent-drop
- ci: capture-net-diag.sh + workflow steps to snapshot OVS/OVN/xfrm
  state on failure, fan out across all 3 multinode nodes

Refs: mulga-siv-136

* test(e2e): sticky-skip downstream SSH tests when probe fails

When TestSSHProbe times out (3 min, typically because of mulga-siv-134
datapath bug), four downstream tests each re-probe SSH on the same
broken datapath and time out identically — single-node job runs ~24 min
instead of ~12 min, with the same error logged five times.

First waitForSSHReady timeout now sets a package-level atomic flag;
subsequent waitForSSHReady / trySSHReady / requireSSHHealthy calls skip
immediately. Preserves the original red signal on TestSSHProbe and on
any test that genuinely needed SSH (Skip ≠ Pass). Bool variant
(trySSHReady) consults but does not set the flag — its caller already
treats False as advisory warning, not fatal.

TestSGToSGDatapath has its own EventuallyErr SSH wait (not via
waitForSSHReady) and needs an explicit requireSSHHealthy(t) gate at
the top of runSGToSGDatapath. TestNATGateway already calls
waitForSSHReady first so the gate fires naturally.

Refs: mulga-siv-137

* fix(ipsec): use Debian unit name openvswitch-ipsec.service

CI artifact shows `Unit ovs-monitor-ipsec.service could not be found`
on every node. Debian's openvswitch-ipsec package ships the unit as
openvswitch-ipsec.service (the binary inside is ovs-monitor-ipsec, but
systemd's name follows the package). The previous commit guarded on
the wrong unit name, so:

- spinifex-daemon.service Wants=/After= silently no-op'd (missing unit)
- enableOVNIPSec's `systemctl enable --now ovs-monitor-ipsec.service`
  failed, daemon logged a warning and continued without flipping
  ipsec_encapsulation=true
- TestMultinodeIPSec skipped with `node1 reports ""` because OVS DB
  never received the cert pointers

Rename across all 5 spots (daemon, systemd unit, test, CI diag script,
workflow journal capture) to match the Debian package layout.

Note: the package itself still must be present on the CI VM image —
that's tracked in the mulga repo (image-builder provision.sh +
bootstrap-install.sh shim).

Refs: mulga-siv-136

* fix(e2e): authorize default SG tcp/22 + icmp in single-node fixture

admin init leaves the default SG closed (AWS parity); the Go single suite
never ported the Phase-5 SG-ingress block that run-e2e.sh has had since day
one, so every test runner SSH/ping probe hits the OVN port-group ACL drop.

- ec2helpers: add AuthorizeICMPIngress + EnsureDefaultSGOpen helpers.
- single/main_test: open default SG once per process in pkgFixOnce.Do.
- witness: extend ensureDefaultSGSSHIngress to authorize ICMP too.
- run-e2e.sh: append matching ICMP authorize next to tcp/22 block.

mulga-siv-134

* fix(network/reconcile): key DHCP_Options lookup by subnet_id not CIDR

Multi-tenant default VPCs share the same subnet CIDR (172.31.0.0/20) per
account. The existing FindDHCPOptionsByCIDR gate at apply.go:107 found
the first account's DHCP_Options row and skipped creation for every
subsequent subnet with the same CIDR. Those subnets' ports then attached
nothing (FindDHCPOptionsByExternalID misses on subnet_id), VMs got no
DHCPv4 lease, and SSH/ICMP into them silently failed even though SG
ACLs and NAT were correct.

Switch the gate to FindDHCPOptionsByExternalID keyed on spinifex:subnet_id
so each subnet owns its own row, matching the attach lookup at line 203.

Verified: account 000000000001 default VPC RunInstances now produces an
LSP with dhcpv4_options populated, VM cloud-init reports a 172.31.0.5/20
lease + default route via 172.31.0.1, and ping + ssh TCP handshake to
the EIP succeed end-to-end. Stale DHCP_Options row for the prior dead
subnet was wiped manually; reconciler recreated the correct row for the
live subnet on its next pass.

* fix(ipsec): enable openvswitch-ipsec at provision time, drop daemon write

Provisioning now runs `systemctl enable --now openvswitch-ipsec.service`
alongside openvswitch-switch and ovn-controller. The spinifex-daemon
process drops its `enable --now` shell-out and only polls is-active.

Sudoers gains one read-only line:
  spinifex-daemon ALL=(root) NOPASSWD: /usr/bin/systemctl is-active openvswitch-ipsec.service

This mirrors the existing vpcd ovn-controller is-active precedent and
removes the daemon's need for systemd-write capability. Aligns with
least-privilege service account pattern: provision enables services,
daemon only reads status.

If the unit is inactive at runtime, the daemon refuses to flip
ipsec_encapsulation=true (silent-drop guard from mulga-siv-136) and
surfaces a clear error pointing at scripts/setup-ovn.sh.

* chore: unblock preflight on feat/network-layer-redesign

Two pre-existing failures blocked preflight on the branch:

- govulncheck flagged golang.org/x/net@v0.54.0 (GO-2026-5026, ASCII Punycode
  rejection bug in idna.ToASCII); reached via utils.DownloadFileWithProgress.
  Bump to v0.55.0; go mod tidy carries x/sys to v0.45.0.
- TestTopologyHandler_SubnetCreate_RouterPortFails asserted subnet create
  fails when the parent VPC router is missing. That contract changed in
  aed7b2e (mulga-siv-133), which made handleSubnetCreate call EnsureVPC
  idempotently before EnsureSubnet to avoid a NATS publish-order race.
  Delete the now-impossible failure case.

* refactor(network/ovn): relocate nbdb model package from services/vpcd

Phase 4 / mulga-siv-125.6 Slice A. Pure import rename, no logic change.

The OVN Northbound DB model (LogicalSwitch, LogicalRouter, DHCPOptions,
etc.) lived under services/vpcd/nbdb/ because that was the original home
of every OVN caller. After Phase 1+2 the L1 client (network/ovn) and all
L3/L5 managers (network/policy, network/external, network/topology,
network/reconcile) became the primary callers — 8 importers in network/*
vs 2 in services/vpcd/. The directory move puts the schema model where
its consumers are, and unblocks deleting services/vpcd/ entirely once
the subscriber/launcher relocations land (Slices B–D).

* refactor(vpcd): delete dead retrofit/reconcileIGW helpers + bridge-mode bleed

Phase 4 / mulga-siv-125.6 Slice B.

Production path no longer touches any of:

- RetrofitAllGatewayPortNetworks / RetrofitAllExternalLocalnetOptions —
  the 5-pass startup leftovers that network/reconcile (Phase 2.2) made
  redundant. Nothing called them outside tests.
- reconcileIGW + its allocateGatewayLRPIP / gwLrpRange helpers + the
  ipv4ToUint32 / uint32ToIPv4 utilities — superseded by
  external.IGWManager (Phase 2.4) which carries its own pool logic.
- ensureLocalnetOptions / ensureGatewayPortNetworks /
  expectedGatewayPortNetwork — read-before-write retrofit shims for the
  same code paths.
- generateMAC — only callers were reconcileIGW + its tests.

useCentralizedNAT (the bridge-mode bleed flagged in plan §2.2) is
replaced by a policy.NATMode value injected via WithNATMode(...). The
mode is resolved once in vpcd.go from host.UplinkMode and threaded into
both the topology-handler lazy managers and the reconciler stack, so
"is this veth?" is no longer a question topology.go can ask. The
TopologyHandler defaults to NATModeDistributed when WithNATMode is
omitted, matching the previous default.

Drops services/vpcd/topology.go from 1220 LOC to 693, deletes ~700 LOC
of obsolete tests (TestGenerateMAC, TestEnsureLocalnetOptions_*,
TestRetrofitAllExternalLocalnetOptions_FixesClearedOptions,
TestReconcileIGW_*, TestGwLrpRange), and frees the nbdb + utils +
net imports in topology.go.

Stale "phase 4 migrates those onto the new managers" comment in vpcd.go
fixed in passing — the subscribers were migrated in Phase 2.6
(mulga-siv-129); only the file-relocation parts of Phase 4 remain.
Stale ensureLocalnetOptions / ensureGatewayPortNetworks references in
network/ovn/{live.go,mock/mock.go} doc comments also cleaned up.

* refactor(network): move NATS VPC subscribers to network/subscribers

Phase 4 Slice C (mulga-siv-125.6). Promotes the NATS event handlers out of
services/vpcd into a new spinifex/network/subscribers package. Subscriber
holds the topology/policy/external managers directly — the lazy *Once
adapter shim (topology_manager.go) is deleted along with vpcd's local
event-struct copies.

launchService now constructs topology.LiveManager eagerly with a DNS
callback derived from external pools (preserving the unscoped-pool lookup
old TopologyHandler.lmDNSServer did), builds every manager up front, then
hands them to subscribers.New + Subscribe. reconcile.New receives
topology.Manager directly instead of through the adapter.

Bridge-mode constants and waitForFlowsHV move into vpcd.go alongside the
launcher; they were left behind as topology.go's last responsibilities.

Handler-layer tests (topology_test.go, security_test.go, integration_test.go)
are dropped: substance is covered by network/topology, network/policy,
network/external manager tests. subscribers/subscribers_test.go adds
focused coverage: missing-dep rejection, topic registration smoke, and
bad-JSON envelope per topic.

services/vpcd is now down to the launcher + the ovn/mock compat aliases
(removed in Slice D when the launcher promotes to cmd/vpcd/).

* refactor(vpcd): relocate services/vpcd → spinifex/vpcd; drop dead aliases

Phase 4 Slice D (mulga-siv-125.6). Final cleanup of the network-redesign
package layout. services/vpcd/ disappears entirely; the launcher remains
an in-process Service impl, just rehomed under spinifex/vpcd/ (no separate
binary — spx vpcd start stays the cobra entrypoint).

- Delete services/vpcd/mock_ovn.go + ovn.go (compat aliases now dead post
  Slice C; only callsite was launchService's NewLiveOVNClient, inlined to
  ovn.NewLiveClient).
- git-rename services/vpcd/vpcd.go + vpcd_test.go to spinifex/vpcd/.
- Retarget three importers (spinifex/service/service.go +
  service_test.go, cmd/spinifex/cmd/service.go) to the new path.
- Fix stale services/vpcd / TopologyHandler comments in network/reconcile/
  + network/external/types.go + spinifex/vpcd/vpcd.go.
- service-interfaces.yaml vpcd path updated.
- Plan doc §13/§14/§16 + §9.2/§19 updated: drop cmd/vpcd/main.go (was
  speculative; never built) in favour of in-process Service impl at
  spinifex/vpcd/vpcd.go. Plan §16 Created list now lists subscribers/.

Phase 4 plan items 1+2 (remove services/vpcd, entrypoint location)
satisfied. Items 3+4 remain blocked on mulga-siv-125.4 + 125.5 (bundled
join token, plan archive).

* fix(ovn): install openvswitch-ipsec + strongswan explicitly

ovs-monitor-ipsec.service fails to start without an IKE daemon. The
openvswitch-ipsec package only Recommends strongswan, so any apt
config that drops Recommends (or a base image with the recommends
already skipped) leaves the service in a Restart loop with 'IKE
daemon is not installed'. Hoist both packages into setup-ovn.sh so
provisioning is the single source of truth — the bootstrap shim in
mulga is no longer needed.

* test(network): pin ADR-0006 invariants to executable suite

Add static-analysis + behavioural tests that bind every safety and
liveness clause in ADR-0006 (S1-S9, L1-L3) to a named Go test. Failure
output quotes the ADR clause verbatim and points at the offending
file:line so future debugging sessions can't quietly bypass a layer
contract to make a test green.

Static-analysis suite (spinifex/network/invariants/):
- S1 layers_test.go: parses `go list -json`; rejects upward layer
  imports and layers pulling from cross-cutter packages
- S2 host_containment_test.go: AST-detects ovs-vsctl / ovn-nbctl /
  ovs-ofctl shell-out outside network/host/
- S3 nat_mode_test.go: rejects .UplinkMode() / NATModeFromUplinkMode()
  calls outside the init-time resolver locations
- S4 names_test.go: AST-detects OVN object name construction (concat,
  fmt.Sprintf, strings.Join) outside topology/names.go
- S5 policy_no_create_test.go: rejects CreateLogical{Switch,Router,...}
  and DeleteLogical{...} calls inside network/policy/
- S6 federation_isolation_test.go: rejects TransitSwitch /
  TransitRouterPort references and ovn-ic literals outside
  network/federation/ (pre-protects the layer before it lands)
- S8 ipsec_test.go: rejects strongswan / xfrm / IKEv2 / libreswan /
  openswan imports anywhere in network/
- S9 reconciler_singleton_test.go: rejects Reconcile…Loop and
  Reconcile…Pass<n> function names anywhere in network/
- S7 nats_subjects_test.go: scans for `vpc.<verb>` subjects missing
  the {azID} segment; calls t.Skip with the gap report so every test
  run prints the work-to-do without breaking CI. Flip to t.Fatalf
  when the cluster-wide subject rename ships.

Behavioural suite (spinifex/network/reconcile/liveness_test.go):
- L1 reconciler converges: scaled-intent (N=1,3,8) double-Reconcile
  property test; asserts second pass is a no-op
- L2 drift bound: structural check that DriftInterval is positive and
  ≤30 min support window; full fake-clock behavioural test deferred
- L3 federation re-enables: t.Skip stub pointing at the missing
  network/federation/ package

Fixes the one production S4 violation the new walker found:
network/external/igw.go was constructing "gw-port-"+vpcID inline.
Adds topology.GatewaySwitchPort(vpcID) helper and retargets both
AttachIGW and DetachIGW callsites through L2.

Plan + per-clause mechanic + phasing in
docs/development/improvements/network-invariants.md.

Refs: mulga-siv-140

* fix(ovn): install strongswan-charon (not strongswan metapackage)

The strongswan metapackage's '\''charon-systemd | strongswan-charon'\''
alternative resolves to charon-systemd by default, which ships
/usr/sbin/charon-systemd but not the legacy /usr/sbin/ipsec helper or
/usr/lib/ipsec/charon binary that ovs-monitor-ipsec --ike-daemon=strongswan
shells out to. Install strongswan-charon explicitly to pull
strongswan-starter (legacy ipsec controller) + the matching charon binary,
matching what openvswitch-ipsec.service expects.

Also reset-failed + restart openvswitch-ipsec.service after enable to
recover from the deb post-install starting the service before its
dependencies finished unpacking.

* chore: add CODEOWNERS — joshsiv-mulga gates network/ + vpcd/

Fall-through reviewer for any change is the maintainer.
network/ and vpcd/ are explicitly listed so the matching branch
protection rule ("Require review from Code Owners") routes those
PRs to joshsiv-mulga. Those trees are governed by ADR-0006
invariant tests (spinifex/network/invariants/); CODEOWNERS adds a
human review gate on top of the mechanical fence.

Refs: mulga-siv-141

* chore: CODEOWNERS fallthrough → @mulgadc/mulgadc-engineers team

Fallthrough reviewer should be the team, not a single maintainer, so
any engineer can approve PRs outside the explicitly-gated paths.
network/ and vpcd/ keep joshsiv-mulga as the required reviewer per
ADR-0006 invariant ownership.

Refs: mulga-siv-141

* feat(ci): add test_run workflow input for -test.run filter

Pass an optional regex through to each suite's '\''go test -test.run'\'' so
dispatches can target a single test (e.g. '\''^TestMultinodeIPSec$'\'') without
running the full multinode suite. Threaded through single, multinode, and
reboot suite invocations; empty input preserves current behaviour.

* fix(daemon): flip NB_Global.ipsec=true on management node

Setting Open_vSwitch.other_config:ipsec_encapsulation=true on each
chassis is necessary but not sufficient for OVN native IPsec — without
NB_Global.ipsec=true, ovn-controller never adds options:remote_name to
the Geneve tunnel ports, so ovs-monitor-ipsec sees no IPsec-enabled
tunnels and the kernel xfrm tables stay empty. After enabling
ipsec_encapsulation locally, also write NB_Global.ipsec=true when the
local ovnnb_db socket is present (management node only); workers skip
silently — one writer is enough for a cluster-wide flag.

Adds a scoped sudoers entry pinning the daemon to that exact ovn-nbctl
invocation so the grant can't be reused for other NB mutations.

* fix(ovn): grant charon AppArmor read on /etc/spinifex/ipsec

The strongswan-charon profile only allows reads from /etc/ipsec.*,
/etc/strongswan.*, and a small fixed allowlist. ovs-monitor-ipsec writes
the per-tunnel strongSwan config with absolute paths to our peer cert +
key under /etc/spinifex/ipsec/, so charon hits 'Permission denied'
loading them (it runs as uid 0 but AppArmor still blocks) and no xfrm
SAs come up. Drop a read grant for /etc/spinifex/ipsec/** into the
profile's local override hook + reload.

* fix(ovn): pin OVS system-id to hostname for IPsec cert identity match

ovs-monitor-ipsec uses chassis-id as the IKEv2 `@<name>` peer identity in
the strongSwan config it generates. Our per-node IPsec peer cert
(admin.GenerateIPSecPeerCert) carries the node name as CN + dnsName SAN.
With chassis-id left at the package-generated UUID, charon validates
`@<UUID>` against a cert with dnsName=<hostname> — mismatch returns
AUTHENTICATION_FAILED and no xfrm SAs are negotiated.

Pin system-id to hostname (which equals the node name on Mulga clusters)
by writing both the on-disk source of truth (/etc/openvswitch/system-id.conf,
read by ovs-ctl on boot) and the running OVS DB value. Writing only one
would drift on the next reboot — the original "do not override" comment
was right about that hazard, just wrong about the resolution.

Cross-link the invariant in admin/ipsec.go: changing the cert identity
without updating setup-ovn.sh (or vice versa) breaks IKE silently.

Refs: mulga-siv-136

* fix(ovn): take --node-name flag so chassis-id matches cluster identity

CI hostnames are bead-themed (env20-casuarina) and don't match the
cluster node name (node1/node2) baked into the IPsec peer cert dnsName
SAN at `spx admin init/join --node NAME`. Pinning system-id to
`hostname -s` produced env20-casuarina; charon then validated
`@node1` against dnsName=env20-casuarina and IKE failed with
AUTHENTICATION_FAILED.

Add a --node-name=NAME flag to setup-ovn.sh, default to hostname for
manual/dev invocations, and update the ansible install role to pass
{{ spinifex_node_name }}. The matching bootstrap-install.sh change
lives in mulga.

Refs: mulga-siv-136

* refactor(daemon): relocate L0 helpers to network/host + widen ADR-0006 S2

Phase 4 Slice E of mulga-siv-125.6. Cleans up spinifex/daemon/network.go
per the audit and widens the S2 invariant to forbid OVS/OVN shell-outs
in spinifex/daemon/ (daemon is an L0 consumer; S2 applies).

Moved to network/host/:
- OVSNetworkPlumber + SetupTap/CleanupTap → host.OVSPlumber (host.NewOVSPlumber)
- GetBridgeIPv4 → host.GetBridgeIPv4
- OVNHealthStatus + CheckOVNHealth → host.OVNHealth + host.HealthStatus
- daemon/ipsec.go OVS/OVN ops → host.SetIPSecCertPaths, host.EnableIPSecEncapsulation, host.SetNBGlobalIPSec

Moved to utils:
- sudoCommand → utils.SudoCommand + utils.SetSudoCommandForTest test seam
  (cross-package reassign would trip the reassign linter; helper keeps
  the indirection inside utils).

Moved to vm:
- generateMgmtMAC → vm.GenerateMgmtMAC (pairs with vm.GenerateDevMAC)

Deleted (dead):
- SetupComputeNode (replaced by network/host/bridges.go:ensureBridges +
  scripts/setup-ovn.sh:572-579)
- EnsureDataRoute
- findInterfaceByIP
- daemon/network.go + dead tests in daemon/network_test.go (duplicates of
  vm package tests retained; mgmt MAC test moved to vm/lifecycle_test.go)

S2 invariant (network/invariants/host_containment_test.go) now walks
both spinifex/network/ and spinifex/daemon/, skipping network/host/.

* fix(ovn): broaden AppArmor read grant to /etc/spinifex (covers CA cert)

The earlier override granted reads on /etc/spinifex/ipsec/** only, which
covers the peer cert + key but NOT the cluster CA at /etc/spinifex/ca.pem.
charon then can't load the CA, can't validate the peer cert chain, and
surfaces the failure as `no trusted RSA public key found for '<peer>'`
even though identity matching now succeeds — IKE_AUTH fails with
AUTHENTICATION_FAILED and no xfrm SAs negotiate.

Grant /etc/spinifex/** instead (covers ca.pem + ipsec/peer.{pem,key})
and always rewrite the override so re-runs replace the older narrower
rule.

Refs: mulga-siv-136

* fix(ipsec): symlink cluster CA into charon's default cacerts dir

ovs-monitor-ipsec writes per-conn `cacert=/etc/spinifex/ca.pem` references
in the strongSwan config, but strongSwan 6.0 only loads CAs declared in
standalone `ca` sections or files placed in /etc/ipsec.d/cacerts at
startup. Without this, charon authenticates the local side fine but
rejects every inbound peer cert as `no trusted RSA public key found for
'<peer>'`, AUTH_FAILED, and no xfrm SAs negotiate.

Do the symlink in admin.GenerateIPSecPeerCert (right after writing the
peer cert) — setup-ovn.sh runs before `spx admin init/join` creates
/etc/spinifex/ca.pem, so the wiring can't live there. Use a stage-and-
rename pattern so concurrent test invocations don't race on the symlink.

/etc/ipsec.d/cacerts is on charon's default AppArmor allowlist so no
profile change needed.

Refs: mulga-siv-136

* chore(setup-ovn): drop apt-get install_packages block

OVS/OVN/openvswitch-ipsec/strongswan-charon are baked into the CI gold
image via mulga's image-builder/scripts/provision.sh (commits 116bb05,
a9b3a9c). Keeping a runtime apt-get install path here pulled CI through
apt-cacher-ng on every bootstrap and tripped on intermittent "Message
has been manipulated" InRelease cache corruption (env21/env20 runs).

Drop the install block. Gold-image rebuild is the canonical place to
add new system packages. If a package is missing, downstream ovs/ovn
commands fail loudly during setup-ovn.sh's later steps — clearer signal
than silently re-installing through a flaky proxy.

setup.sh already supports INSTALL_SPINIFEX_SKIP_APT=1 (passed by mulga's
bootstrap-install.sh:237) so this removes the last runtime apt-get call
on the CI provisioning path.

* fix(ovn): gate system-id pin on explicit --node-name

setup-ovn.sh used to fall back to `hostname -s` when --node-name wasn't
passed, and then unconditionally wrote that value to
/etc/openvswitch/system-id.conf + ovs-vsctl external_ids:system-id.

On CI single-node, the gold image already registered a chassis with
name=<UUID>; setup-ovn.sh then rewrote system-id to the bead-themed
hostname (env10-banksia). vpcd's discoverChassis treats any chassis row
whose name != local system-id but hostname == local hostname as a stale
local chassis and skips it, so vpcd reported "no OVN chassis registered
in SBDB" and refused to start, cascading into the e2e + e2e-go failures
on run 26430839508.

Drop the hostname fallback. If --node-name is given, pin both the
on-disk file and the running OVS DB to it (callers that care about
IPsec cert identity matching still get it). If no --node-name is given,
leave the existing system-id alone — that's always safe whether the
value came from a gold-image UUID, bootstrap-install.sh writing nodeN
before this script runs, or a manual ansible value.

* fix(network/reconcile): skip orphan prune on startup; drift owns GC

The vpcd startup reconcile races against the daemon's EnsureDefaultVPC:
the daemon writes SG KV rows + publishes vpc.create-sg on each node in
parallel with vpcd starting up. The leader-gated reconcile can load
intent before any SG row is visible on its local JetStream replica
while subscribers on peer nodes are concurrently creating port groups
from the same vpc.create-sg events. A startup orphan-port-group sweep
then deletes managed sg_* port groups that intent hasn't caught up to.

CI run 26434124790 trace:
  node2 reconcile/lock: elected holder=env20-bottlebrush
  node2 reconcile: starting intent_sgs=0
  node2 reconcile/apply: removed orphan port group pg=sg_161c70ce23e704a2a
  node2 reconcile/apply: removed orphan port group pg=sg_a0d078650a3150391
  node2 reconcile/apply: removed orphan port group pg=sg_54b564b374e9162bb

Every subsequent RunInstances → vpc.create-port failed with
"port group not found" for ~3 minutes until the 5-minute drift tick
recreated the port groups. Tests give up after 60s; six multinode
suites cascade-fail on InsufficientInstanceCapacity.

Split the reconciler into Reconcile (full prune, drift loop) and
ReconcileApplyOnly (no prune, startup). applySGs takes a pruneOrphans
bool. vpcd startup calls ReconcileApplyOnly; drift loop unchanged.
Legitimate orphans get garbage-collected on the next drift tick — at
worst 5 minutes of lingering rows, no production impact.

Add TestReconcile_ApplyOnlyKeepsOrphanPortGroup to lock the contract.

* fix(ipsec): trigger charon rereadcacerts after CA symlink install

strongSwan scans /etc/ipsec.d/cacerts only at charon startup. The unit
openvswitch-ipsec.service is enabled at provision time and starts before
admin init writes the cluster CA symlink, so charon ends up running with
zero CAs loaded. Every IKE_AUTH then fails with `no trusted RSA public
key found for '<peer>'` and no SAs negotiate — the failure mode exposed
by TestMultinodeIPSec.

Append a stroke rereadcacerts call at the end of
installCAIntoCharonTrustStore so an already-running charon picks up the
freshly-placed CA without a service restart. Failure is swallowed at
debug — a missing/stopped charon at admin-init time is expected and a
later startup will scan cacerts naturally.

* refactor(network/host): move IPSec orchestrator from daemon (ADR-0006 S8)

ADR-0006 S8: "IPSec is OVN-native only. No layer implements custom IKEv2,
XFRM rules, or direct strongSwan management. IPSec SA lifecycle is delegated
entirely to OVN native IPSec and is invisible above L0."

The enableOVNIPSec orchestrator and its ensureOVSMonitorIPSecActive helper
lived in daemon/ipsec.go but composed L0 primitives (SetIPSecCertPaths,
EnableIPSecEncapsulation, SetNBGlobalIPSec) that already lived in
network/host. The orchestrator now lives alongside its callees as
host.EnableOVNIPSec, taking configPath and clusterConfig from the daemon at
the call site. Helper and test-override package vars (systemctlActiveTimeout,
ovnNBSocketPath) move with it; tests are translated to call EnableOVNIPSec
directly rather than via the Daemon struct.

Closes mulga-siv-142

* refactor(daemon): use topology.Port for OVN port names (ADR-0006 S4)

ADR-0006 S4 forbids any layer above L2 from constructing OVN object
names. Three daemon sites formatted "port-" + ENIId inline; route them
through topology.Port instead.

Closes mulga-siv-143

* refactor: use topology.Port for OVN port names in handlers + vm (ADR-0006 S4)

Replace inline "port-"+eniID formatting across five sites (eip, instance x2,
vpc/eni, vm/network_helpers) with topology.Port. OVSIfaceID stays as a thin
wrapper to preserve the OVN binding contract comment and existing call sites.

Closes mulga-siv-144

* test(network/invariants): widen scan roots to daemon/handlers/vm/testutil/utils (ADR-0006)

Widen ADR-0006 invariant scan roots so drift in upstack consumers surfaces
in CI. Backlog of violations in widened roots was drained by
mulga-siv-142/-143/-144; this commit makes the wider scan permanent.

  - S2 (host_containment): add vm/ alongside network/ + daemon/
  - S3 (nat_mode):         add daemon/ alongside network/ + vpcd/
  - S4 (names):            add daemon/, handlers/, vm/ alongside
                           network/ + vpcd/; add narrow AWS-ID exemption
                           (vpc-cidr-assoc-) so AWS resource IDs are not
                           misclassified as OVN object names
  - S6 (federation):       add daemon/, handlers/ alongside network/;
                           convert single-root walk to slice
  - S7 (nats_subjects):    add daemon/, handlers/, testutil/, utils/ —
                           stays t.Skip pending cluster-wide subject
                           rename; gap report now lists 58 subjects

CODEOWNERS: add /spinifex/network/invariants/ rule so widening or
narrowing the scan needs explicit owner review.

Closes mulga-siv-145
Refs: audit-adr-0006.md

* chore(e2e): disable IPsec in pseudo multi-node test

Pseudo multi-node runs three simulated nodes as unprivileged tf-user.
The charon trust-store install in 904b45e writes /etc/ipsec.d/cacerts,
which fails with EACCES under a non-root caller and aborts admin init.

Disable --ipsec for this suite — loopback-only nodes don't exercise
real Geneve encryption anyway. Real-multi-node + single-node e2e
(both run admin init via sudo) continue to cover the IPsec path.

* fix(ovn): atomic Ensure* primitives prevent duplicate logical entities

OVN NB has no unique constraint on Name. The previous
GetLogicalRouter→CreateLogicalRouter sequence in EnsureVPC was a TOCTOU
race: when vpc.create on one node and the defensive vpc.create-subnet
EnsureVPC call on another both observed absence, both inserted, yielding
two routers per VPC. The orphan held DNAT references blocking EIP
detach, and DNAT/flow installation landing on the orphan caused
TestMultinodeGuestSSH SSH timeouts.

Add EnsureLogicalRouter / EnsureLogicalSwitch / EnsurePortGroup to the
libovsdb client. Each builds a single OVSDB transaction combining a
wait-op (Until=equal, Rows=[]) gated on absence of a Name match with the
insert. The server serialises the wait+insert atomically; concurrent
callers see exactly one survivor and the rest fall through to a re-fetch
that returns the canonical row.

Switch all production callers (topology.EnsureVPC / EnsureSubnet /
EnsureSGPortGroup, external.AttachIGW, reconcile.applyVPCs /
applySubnets) to the Ensure* variants. Bare Create* remains available to
the L1 wrapper.

Add invariant test TestS4_OVNNamedCreatesUseEnsure (AST walk) to block
future reintroduction of the bare Create* call sites outside
network/ovn.

Mock implements Ensure* under its existing mutex so the concurrency
tests (50/30/30 goroutines for Router/Switch/PortGroup) prove a single
UUID survives.

Refs: mulga-siv-146

* fix(ovn): wait-op rows must be non-empty; flip to NotEqual predicate

The Ensure* primitives sent a wait-op with `Rows: []ovsdb.Row{}` plus
`Until: ==` (RFC 7047 §5.2.6 absence test). The libovsdb Operation
struct tags Rows as `json:"rows,omitempty"`, so the empty slice was
dropped on the wire and ovsdb-server rejected every transaction with
"Required 'rows' member is missing", breaking reconciler bootstrap and
every downstream create-port lookup ("logical switch X not found").

Flip the predicate to the equivalent `Until: !=` formulation with a
single-row projection containing the Name we want absent:

  no row    → projection []           != [{name}] → predicate holds
  row exists → projection [{name}]    == [{name}] → predicate fails

Same atomic guarantee, JSON now well-formed. Mock tests can't catch
this — only a real ovsdb-server validates the envelope.

* chore: remove generateMAC wrapper

* chore: remove all bead / plan references

* fix(network/policy): wait for chassis flows after AddNATGateway

AddEIP fires m.barrier() to block until ovn-northd compiles NB→SB and every
chassis installs the new dnat_and_snat flows; AddNATGateway returned right
after the NB commit. So `aws ec2 create-route … --nat-gateway-id` would
publish vpc.add-nat-gateway, the SNAT row would land in NB, and the API
call would succeed before the gateway chassis had programmed the SNAT flow
for the private subnet.

Phase 8d's 10×5s=50s ping budget races that flow-install latency on slow
CI hosts (last seen run 26455602615 single-node, identical flake on
unmodified dev run 26434711010 — pre-existing, not introduced by Ensure*).

Mirror AddEIP: call m.barrier() after AddNAT returns. Add unit test
TestNATManager_AddNATGateway_FlowsBarrier_Fires covering the new path.

* chore: remove more plan refs

* chore: remove GenerateIPSecPeerCertIfEnabled

* chore: remove dupliate subnetGatewayCIDR function

* chore(network): trim superfluous comments across network/ tree

Collapse multi-paragraph godocs to 1-2 sentences, drop WHAT-restatement
comments, remove section dividers grouping <10 items, and cut prose
narration in tests. ADR clause references, one-line WHY comments for
non-obvious OVN/OVSDB/AWS/NATS semantics, and exported-symbol godoc are
preserved. No behavioural changes.

Packages: invariants, topology, host, external, ovn, reconcile, policy,
subscribers.

* fix(igw): restore attachment State="available" for AWS parity

AWS InternetGatewayAttachment.State is "available" when an IGW is
attached to a VPC, per the AWS SDK doc ("the state is available when
attached to a VPC; otherwise, this value is not returned"). Commit
b7505f8 wrote "attached"/"detached" to align with the reconciler
filter, which inverted AWS parity.

Fix the producer to write "available" again and update the consumer:
 - handlers/ec2/igw: AttachInternetGateway and DetachInternetGateway
   both persist State="available"; IGWRecord comment narrowed.
 - network/reconcile/intent.loadIGWs: filter accepts "available" (was
   "attached"); attachment is identified by VpcId != "".
 - tests updated: igw service_impl_test, routetable service_impl_test
   fixture, reconcile intent_test fixture.

* Update spinifex.toml

* refactor(subscribers): route EIP/NATGW through L5 wrappers (ADR-0006 §S1)

Subscriber previously called policy.NATManager directly for EIP and NAT
Gateway operations, bypassing the L5 wrappers (EIPManager, NATGWManager)
that existed on paper. ADR-0006 §S1 requires every cross-layer call to
pass through the immediate lower neighbor's typed interface; IGW already
followed this pattern.

Wire EIPManager and NATGWManager into the Subscriber struct, construct
them in vpcd alongside IGWManager, and swap the four direct-L3 call
sites (AddEIP, DeleteEIP, AddNATGateway, DeleteNATGateway) onto the
L5 surface (AttachEIP, DetachEIP, AttachNATGateway, DetachNATGateway).
AttachEIP now fires the flows-barrier, giving callers the same
"reachable on return" guarantee IGW already had.

The reconciler still calls policy.NATManager directly; that's a
cross-cutter and a separate concern.

* test(reboot): port 8MB WAL pad workaround from bash run-reboot-e2e.sh

App VMs' user-data writes (unit file + index.html) sit in the on-host
WAL until WriteWALToChunk crosses the 4MB threshold. Host reboot before
that loses them — systemd then refuses to load the zero-byte unit and
the responder never starts. Mirror the bash driver's dd+sync pad so the
WAL flushes pre-reboot. Drop when the upstream WAL fix lands.

* test(e2e): dump OVN/OVS/SG state on Phase 8d NATGW failure

Phase 8d's existing failure path only prints lr-nat-list and
lr-route-list. CI artifacts are not uploaded when run-e2e.sh exits
nonzero, so debugging the NATGW regression requires inline diagnostics
in the journal. Expand the dump to include nb/sb show, chassis bindings,
port_group ACLs, br-int flows filtered to the NATGW IP/private subnet,
host routes, and the private VM's own ip/route/neigh state.

* fix(ovn,reconcile): scope NAT deletes to router; NATGW snat per associated subnet

Two compounding bugs caused Phase 8d NATGW E2E flake (~60% CI failure):

1. ovn.DeleteNAT/DeleteNATByExternalIP searched all NAT rows globally and
   only mutated the named router afterwards. With AWS subnet CIDRs repeating
   across VPCs, (type, logicalIP/externalIP) is not globally unique — the
   delete picked a NAT row owned by a different router, the mutate was a
   no-op, and the row delete failed with "remaining reference(s)", leaving
   the original router's NAT orphaned. Both calls now resolve the LR first
   and filter NAT lookups to lr.NAT UUIDs. Mock client mirrors the scoping.

2. reconcile.loadNATGWs used the NATGW's home (public) subnet CIDR as
   SubnetCIDR, producing an snat for the wrong CIDR that collided with the
   correct event-published snat. loadNATGWs now walks route tables and
   emits one NATGWSpec per (NATGW, associated private subnet) pair,
   mirroring publishNatGatewayEventsForAssociation. Intent map keyed by
   natgwID|subnetCIDR so multi-subnet NATGWs produce distinct specs.

Tests:
- nat_test.go: cross-router same-logicalIP isolation for DeleteEIP and
  DeleteNATGateway
- intent_test.go: NATGW snat uses associated private subnet CIDR, not the
  NATGW home subnet; NATGW with no associations produces no spec

---------

Co-authored-by: Julian Sommer <115516918+juliansommer@users.noreply.github.com>
2026-05-27 21:05:01 +10:00
joshsiv-mulga 8841241541 fix(setup-ovn): del-port cleanup without bridge name to avoid error on first run 2026-05-14 14:30:40 +10:00
tomnewton-mulga 9d665f9dde bringing local networking changes onto dev branch 2026-05-01 12:13:34 +10:00
Josh Siviour 69404b38ce fix(vpcd): public-IP boot race + DHCP DORA hardening (siv-33/34/36/37/38/39) (#177)
* fix(installer): emit kernel cmdline to ttyS0 alongside tty0 (mulga-siv-33)

GRUB_CMDLINE_LINUX in /etc/default/grub only listed console=tty0, so the
installed kernel printed nothing on serial after the GRUB menu. Headless
installs (CI, racks with serial-only IPMI, remote-dev SSH-to-QEMU) saw a
black screen forever and had no path to debug boot failures.

Append console=ttyS0,115200 — the last `console=` on the cmdline becomes
the system console, so ttyS0 wins on serial-only hardware while tty0
still receives output on local displays.

Plan: docs/development/bugs/iso-public-ip-boot-race.md

* fix(ipam): widen vpc.dhcp.acquire retry budget to 60 s (mulga-siv-34)

ObtainDHCPLease retried only 5 attempts × 1 s before returning a hard
error. On a cold ISO boot, NATS comes up well before vpcd's reconcile
leader-election + dhcp.Manager subscribe (typical 5–30 s, pathological
~60 s during full reconcile), so daemon's NewExternalIPAM races vpcd's
dhcp.acquire subscription and fails permanently — d.externalIPAM stays
nil for the daemon's lifetime, daemon_handlers_instance.go silently
skips all auto-public-IP allocation, and instances launch with no
public IP, no dnat_and_snat, and no NAT event ever published.

Bump maxAttempts to 60 with 1 s spacing; expose both as package vars
so tests can shrink the budget for fast timeout-path coverage. Pure
widening of the existing retry loop — no behaviour change on the
success path, only the worst-case wallclock when vpcd never comes up.

The dominant cause of slow vpcd starts (mulga-siv-33: systemd-networkd
not enabled in the ISO → veth pair vanishes on reboot → vpcd
crashloops) is fixed alongside this. A 60 s budget fits comfortably
above all observed healthy-startup times.

Plan: docs/development/bugs/iso-public-ip-boot-race.md

* fix(setup-ovn): declare Linux WAN bridge as NetDev so networkd-managed veth resolves Bridge= on reboot (mulga-siv-33)

The veth-mode reboot persistence drop-ins added in mulga-998.b were
incomplete: setup-ovn.sh wrote `15-spinifex-veth-wan.network` with
`Bridge=br-wan`, but never declared br-wan itself to networkd.

br-wan is created by `networking.service` (ifupdown via
`/etc/network/interfaces`, generated by `install.go writeNetworkConfig`),
not networkd. networkd's `Bridge=` directive requires the target to be a
known NetDev — when it isn't, networkd silently logs
`br-wan NetDev could not be found, ignoring assignment` and the veth
ends up with no master. vpcd's bridge-mode sanity check then fails on
every reboot.

Fix: also write `14-spinifex-br-wan.netdev` declaring br-wan as
`Kind=bridge`. networkd matches the existing kernel bridge by name+kind
(the `Failed to create netdev: File exists` log is harmless), and
`Bridge=br-wan` resolves on next boot. ifupdown still owns DHCP and the
IP — networkd just needs the NetDev declaration to enslave the veth.

The write is gated to avoid clobbering operator-managed networkd config:
if any other `.netdev` under `/etc/systemd/network`,
`/run/systemd/network`, or `/usr/lib/systemd/network` already declares
the WAN bridge by name, the write is skipped with a log line pointing
at the operator file. Cleanup hook also removes the new file when
switching away from veth mode.

Verified end-to-end via QEMU repro: clean install + first boot + reboot,
veth-wan-br master persists across reboots, vpcd starts cleanly.

* fix(vpcd/dhcp): enable AF_PACKET promisc on bridge for DORA (mulga-siv-33)

Real-world DHCP servers commonly ignore the BOOTP BROADCAST flag and
reply with a unicast OFFER addressed to the synthetic per-tenant chaddr
(e.g. 02:f3:...). A Linux bridge floods unknown unicast to slave ports
but does NOT pass it up to the bridge netdev unless IFF_PROMISC is set,
so vpcd's AF_PACKET socket on br-wan misses the OFFER and DORA times
out at 15s ("unable to receive an offer: context deadline exceeded").

Dev/CI didn't hit this:
- CI uses spx_wan_mode=static — no DORA via vpcd.
- QEMU dev DHCP servers (SLIRP/dnsmasq) honor the BROADCAST flag, so
  their replies are L2 broadcast which the bridge always passes up.

Replace the three nclient4.New(iface, ...) call sites in Acquire/Renew/
Release with nclient4.NewWithConn(...) wrapping a custom AF_PACKET
DGRAM conn that calls SetPromiscuous(true). Promisc is per-socket
(per-DORA, ~15s) and refcounted by the kernel — auto-clears on close.

* revert(vpcd/dhcp): drop AF_PACKET promisc wrapper, restore nclient4.New

ecfbd4f swapped nclient4.New for openPromiscBridgeConn + NewWithConn to
catch unicast OFFER replies that bypass the bridge netdev. On dev hosts
where upstream honors the BOOTP BROADCAST flag, the wrapper regressed
DORA — public-IP allocation failed where main works. Reverting until
the promisc path is validated against both broadcast- and unicast-OFFER
servers.

* fix(setup-ovn): mark br-int/br-ext Unmanaged for systemd-networkd (mulga-siv-37)

Fresh ISO install on Trixie+systemd-networkd left the OVS internal netdevs
admin-down: networkd has no matching .network so it tags them as unmanaged
but never brings them up. OVS dataplane works but ovn-controller flow
programming and any tooling that probes link state misbehaves.

Drop /etc/systemd/network/05-spinifex-ovs-internal.network with
Unmanaged=yes so OVS itself owns the link state — `ovs-vsctl add-br`
already runs the netdev up at create time.

* fix(vpcd): allocate gateway LRP IP from pool in centralized NAT (mulga-siv-36)

In veth/macvlan modes the gateway LRP carries all egress, so it must hold
a WAN-subnet IP — otherwise the upstream router silently drops ARP for
the WAN nexthop (RFC 826) and the default route never resolves. The
hardcoded 169.254.0.1/30 was correct for distributed NAT but regressed
centralized NAT (introduced under mulga-siv-26).

Add gw_lrp_range_start/end to ExternalPool. In centralized mode at IGW
attach the gateway LRP gets a fresh IP from that range, persisted as
external_ids:spinifex:gateway_ip on the LRP for idempotent reconcile and
retrofit. Direct mode keeps link-local. Per-VM EIP allocator skips the
gw range; ValidatePoolConfig rejects overlap with the EIP range.

Adds TestTopologyHandler_IGWAttach_CentralizedNATAllocatesGwLrpIP and
extends RetrofitAllGatewayPortNetworks to migrate stale link-local LRPs
to allocated pool IPs at startup.

* fix(vpcd): drop link-local fallback, auto-derive gw_lrp_range (mulga-siv-36)

In centralized NAT (veth/macvlan) the gateway LRP must hold a WAN-subnet
IP — link-local cannot ARP-resolve the upstream nexthop, so the upstream
router silently drops egress. Hardware deployment confirmed the previous
fallback to 169.254.0.1/30 was always reached when gw_lrp_range was not
explicitly configured.

Auto-derive a 16-IP range at the top of the WAN subnet (broadcast - 16
.. broadcast - 1) when gw_lrp_range is unset; shift below RangeStart on
overlap with the per-VM EIP range; clamp inside the subnet; guard the
upstream gateway IP. IGW attach now errors out instead of falling back
to link-local when allocation fails — surfaces misconfiguration loudly.

Adds focused unit tests for gwLrpRange, ValidatePoolConfig and
nextAvailableExternalIP gw-lrp skip; updates the multi-VPC and
PoolWithGatewayIP regression tests.

* feat(vpcd): DHCP-acquire gateway LRP IPs (mulga-siv-38)

Per-VPC OVN gateway LRPs now obtain their WAN-subnet IP via vpc.dhcp.acquire
when the pool is source="dhcp", instead of carving from a static gw_lrp_range.
The upstream DHCP server becomes the single arbiter of LAN address space; a
cluster grows by N nodes without operator-side range carving in spinifex.toml.

- Consolidate ObtainDHCPLease/ReleaseDHCPLease into the dhcp package as
  RequestAcquire/RequestRelease so vpcd and the daemon-side ExternalIPAM
  share one helper. handlers/ec2/vpc keeps its existing ENI/EIP DHCP path.

- TopologyHandler dispatches by pool source: DHCP pools call DHCPManager
  via NATS (client-id "gw-lrp-<vpcId>", idempotent on retry); static pools
  keep the siv-36 gw_lrp_range / auto-derive allocator. Direct mode and
  no-pool deployments still use link-local.

- IGW detach issues vpc.dhcp.release so the upstream server reclaims the
  IP. Best-effort — server-side expiry is the safety net.

- Tests: TestTopologyHandler_IGWAttach_DHCPGwLrpIP (3 VPCs share one DHCP
  pool, distinct IPs, idempotent attach, release on detach),
  IGWAttach_DHCPAcquireFailureAborts (no link-local fallback when DHCP
  errors), TestPrefixFromMask. Existing static / auto-derive tests
  preserved.

* fix(vpcd): subscribe DHCPManager before reconcile to fix boot race (mulga-siv-38)

DHCPManager.Subscribe ran AFTER ReconcileFromKV / RetrofitAllGatewayPortNetworks,
so retrofit's vpc.dhcp.acquire requests for existing IGWs hit "no responders" and
burned the 60-attempt × 1 s cold-boot retry budget per VPC before failing. On a
dev box with one bootstrap VPC the symptom is a 60 s vpcd startup hang followed
by "allocate gw LRP IP failed", and the bootstrap IGW topology missing from OVN
until the next reconcile pass.

Move dhcpManager.Subscribe ahead of the two reconcile passes so the subscription
is live before any topology code can fan out an acquire.

* fix(vpcd): also subscribe DHCPManager before bootstrap reconcile pass

Previous fix moved DHCPManager.Subscribe ahead of ReconcileFromKV but
missed Pass 1 (the bootstrap-config Reconcile that runs even earlier).
On a dev box with a source="dhcp" pool and a bootstrap IGW, that earlier
pass still hit "no responders" and burned the 60-retry cold-boot budget
before the Manager came up. Move both reconcile passes after Subscribe.

* fix(vpcd): RFC 2131 §4.1 DORA exponential backoff (mulga-siv-39)

DHCPManager.Acquire previously did one DISCOVER and gave up after 15s
because the outer ctx.WithTimeout matched the per-attempt timeout —
nclient4's WithRetry(3) could never fire. Real DHCP servers (consumer
routers, ISC dhcpd, dnsmasq) silently drop OFFERs under load; the spec
mandates retransmission with exponential backoff, and a single lost
DISCOVER was killing legitimate boots.

Move retransmission into DHCPManager.acquireWithBackoff with a
4s/8s/16s/32s schedule (±1s jitter, ~60s worst case). NClient4Client
becomes single-attempt; manager owns retry policy. Default
acquireTimeout lifts from 15s to 90s (sum of schedule + slack).

* fix(vpcd): retry NewDHCPManager on JetStream-not-ready (mulga-siv-40)

NewDHCPManager creates the spinifex-dhcp-leases KV bucket via
utils.GetOrCreateKVBucket → js.CreateKeyValue with no retry. After the
mulga-siv-38 launchService reorder, this runs before any other JetStream
user, so on multi-node cold-boot vpcd hits "JetStream system temporarily
unavailable" and exits before cluster quorum forms. Pseudo-multinode CI
calls start_node_services sequentially, so node2's vpcd failure aborts
the script before node3 ever launches and quorum then never forms.

Wrap NewDHCPManager in newDHCPManagerWithRetry (500ms→10s, 5 min cap,
ctx-cancellable) mirroring daemon.initJetStream so vpcd waits as
patiently as the daemon for the cluster to come up.

* fix(daemon): idempotent DetachVolume QMP path (mulga-siv-41)

DetachVolume's QMP sequence was not retry-safe. First call: device_del
succeeds, blockdev-del fails with "Node nbd-vol-X is in use" because NBD
client teardown / in-flight I/O still hold the block node. Handler bails
ServerInternal "leaving volume state intact" but the guest device is
actually gone. AWS-CLI retries: device_del returns DeviceNotFound,
handler bails again. After 2 retries aws cli exits 254 — Single-Node
Phase 8 Step 3 reproducibly fails this way.

Phase 1: treat DeviceNotFound on device_del as already-detached, log and
continue. Detach is now idempotent across retries.

Phase 2: tryBlockdevDel polls blockdev-del up to 20×detachDelay on "in
use" errors so the I/O drain can complete instead of failing the whole
detach. Other QMP errors fall through immediately as before.
2026-05-01 09:48:52 +10:00
Ben Duncan 94600d7b84 OVN chassis issues, new reconsile function, reboot fixed (#165) 2026-04-27 15:48:47 +10:00
joshsiv-mulga 6b75470b0f fix: admin-up veth-wan-ovs via networkd (mulga-998.b Fix 1 follow-up)
Fix 1 persisted the veth pair across reboot via
15-spinifex-veth-wan.{netdev,network}, but only configured
veth-wan-br. Its peer veth-wan-ovs had no .network unit, so
networkd left it unmanaged and admin-DOWN after reboot. That
cascades: peer goes LOWERLAYERDOWN, br-wan loses carrier,
external DHCP/NAT path broken — despite vpcd correctly
detecting mode=veth and the sanity check passing.

OVS does not admin-up external (non-internal) ports — that's
networkd's job. Pre-reboot the setup-ovn.sh 'ip link set
veth-wan-ovs up' made it work, but that doesn't persist.

Write a second unit 16-spinifex-veth-wan-ovs.network with
ConfigureWithoutCarrier=yes so networkd flips admin state
without taking ownership of bridge/address assignment (OVS
retains that). Cleanup paths in the non-veth branch of
setup-ovn.sh and reset-dev-env.sh updated to remove the new
unit too.

Verified live via 'networkctl reload': veth-wan-ovs and
veth-wan-br both UP, br-wan LOWER_UP. Reboot drill per
docs/development/bugs/dhcp-vpcd-issues.md 'Live drill 1'
still required to confirm persistence.
2026-04-24 15:03:05 +10:00
joshsiv-mulga abd93098fc fix: persist veth-wan pair across reboot (mulga-998.b Fix 1)
setup-ovn.sh's veth branch creates veth-wan-br ↔ veth-wan-ovs but nothing
recreates the kernel interfaces on reboot. OVSDB remembers veth-wan-ovs
as a port on br-ext but the peer is gone — the external path silently
breaks and vpcd falls through to direct mode.

- setup-ovn.sh: write /etc/systemd/network/15-spinifex-veth-wan.{netdev,network}
  in the veth branch so systemd-networkd recreates the pair on boot. Add
  a single pre-case guard that rips down stale veth persistence + the OVS
  port + the kernel veth whenever WAN_BRIDGE_MODE != veth, so mode
  transitions are idempotent (D17).
- reset-dev-env.sh: delete the netdev/network units during cleanup so
  `make reset` gives a truly clean slate.
- spinifex-vpcd.service: After=systemd-networkd.service openvswitch-switch.service
  so vpcd's sanity checks see a populated kernel + OVSDB (D5).
2026-04-24 12:37:01 +10:00
Josh Siviour 75fb15be2b feat: spx admin init/join listen-vs-advertise split + br-mgmt OVS provisioning (#158)
* fix: provision br-mgmt as OVS bridge + loopback guard for LB gateway

Convert br-mgmt from an externally-provisioned Linux bridge to an OVS
bridge owned by scripts/setup-ovn.sh, giving every deployment type
(tofu-cluster, production single-node, production multi-node) a single
provisioning path.

setup-ovn.sh grows --mgmt-bridge / --mgmt-cidr / --mgmt-iface /
--no-mgmt-bridge flags. Default creates br-mgmt with fail-mode=standalone
(excluded from ovn-bridge-mappings so ovn-controller ignores it) and
assigns the mgmt IP via a systemd-networkd drop-in so it survives reboot.

SetupMgmtTapDevice / CleanupMgmtTapDevice switch from `ip link master`
to `ovs-vsctl add-port` / `del-port` to match the new bridge type.

Add a loopback guard to wireLBAgentConfig's fallback branch: on a
production single-node with awsgw bound to 127.0.0.1 and no mgmt bridge,
the fallback previously injected 127.0.0.1 into LB VM cloud-init —
silently unreachable because the VM's loopback is its own. The guard
leaves GatewayURL empty and the existing "LB agent gateway URL not
configured" error fires instead. Regression covered in
daemon_wire_lb_test.go.

* fix: auto-detect primary IP for admin init --bind default

Bare `spx admin init` used a 127.0.0.1 default that kept awsgw on loopback
only, so system VMs on br-mgmt could never reach it. Auto-detect the
default-route source IPv4 instead, which keeps TLS cert SANs specific
(still not a wildcard). Dev-install scripts now pass --bind 127.0.0.1
explicitly to preserve loopback-only behavior on laptops.

Closes mulga-siv-7.

* test: refresh wire lb loopback-bind comment for siv-7

* fix: dev-install scripts should let admin init auto-detect --bind

Pinning --bind to 127.0.0.1 on dev installs left awsgw loopback-only while
setup-ovn.sh still provisions br-mgmt, so LB VMs hit 10.15.8.1:9999 with
no listener. Drop the explicit --bind so auto-detect picks the primary IP
and the siv-6 mgmtRouteVia path routes LB traffic to a real listener.

* fix: bind awsgw and predastore on 0.0.0.0 in spinifex.toml template

PR #144 (nats TLS) made every service listen on --bind's specific IP. For
awsgw and predastore this broke localhost-reachability that the UI proxy
(spinifexui/spinifexui.go:193-194) and AWS CLI spinifex profile rely on —
latent since #144, surfaced by siv-7's auto-detect default on dev installs
(502 from the UI).

Hardcode awsgw and predastore host fields to 0.0.0.0 so both listen
wildcard; loopback clients (UI proxy, spinifex AWS CLI profile, same-host
daemon → predastore) keep working, LAN clients still reach them via the
LAN-IP SAN on the cert. daemon.host and nats.host stay as {{.BindIP}}
because peer-advertised values must not resolve to 0.0.0.0/loopback.
predastore.host normalization at config.go:207 rewrites 0.0.0.0 → 127.0.0.1
for local-node consumers, so existing callers see a usable connect address.

* revert: siv-7 --bind auto-detect + siv-6 loopback guard (prep mulga-siv-8)

Clears the deck before layering the listen-vs-advertise split
(mulga-siv-8). The plan restores --bind=0.0.0.0 as the single-node
default and introduces an explicit --advertise flag for off-host dial
targets; the reverted approach (auto-detect a specific IP at init,
hardcode 0.0.0.0 in the template, guard against loopback in
wireLBAgentConfig) becomes redundant once that lands.

Reverts:
- bb0ad3a fix: bind awsgw and predastore on 0.0.0.0 in spinifex.toml template
- f20a47b fix: dev-install scripts should let admin init auto-detect --bind
- 49b0b4e test: refresh wire lb loopback-bind comment for siv-7
- b88dfdf fix: auto-detect primary IP for admin init --bind default

Also drops the loopback guard from siv-6 (74b6e2d) wireLBAgentConfig
fallback and its regression test — subsumed by the GatewayURL
precedence rework in mulga-siv-8.5 (br-mgmt → AdvertiseIP → error,
no silent empty-string fallthrough). The br-mgmt OVS provisioning
from 74b6e2d is retained.

Plan: docs/development/bugs/spx-admin-init-bind.md

* feat: admin.DialTarget + AdvertiseHost helpers (mulga-siv-8.2)

Introduce the two small address-resolution helpers the listen-vs-
advertise split needs, with full unit coverage. No callers yet —
dial-site migration lands in mulga-siv-8.5.

- DialTarget(listenAddr): rewrites wildcard listen addresses
  (0.0.0.0:N, [::]:N, :N) to their loopback equivalents so in-process
  clients dial a target the daemon's cert already has in its SANs.
  Specific IPs, loopback, hostnames, and malformed input pass through.
- AdvertiseHost(listenAddr, advertiseIP): picks the host off-host
  clients should dial. Wildcard listen → advertiseIP; specific host →
  that host. Port is dropped so callers append the protocol-appropriate
  port.

Plan: docs/development/bugs/spx-admin-init-bind.md §Proposed Changes/1

* feat: plumb AdvertiseIP through config/formation (mulga-siv-8.3)

Pure data-model change. Add AdvertiseIP to:
- admin.ConfigSettings (local node, populated by init).
- config.Config (per-node; mapstructure "advertise").
- formation.NodeInfo (json "advertise_ip,omitempty") so the join handshake
  carries it between peers.

buildRemoteNodes now prefers n.AdvertiseIP and falls back to n.BindIP so
joined nodes from older clusters / pre-siv-8 joiners keep working.

No behaviour change yet — templates, CLI flag, and dial-site migration
land in siv-8.4 and siv-8.5.

* feat: --advertise flag + resolveAdvertiseIP + templates (mulga-siv-8.4)

Introduce the listen-vs-advertise split at the CLI boundary.

admin init/join:
- --bind default for init is 0.0.0.0 (was 127.0.0.1 under siv-7 revert).
- New --advertise <IP> flag on both init and join; optional, auto-detected
  from DetectNetwork().WAN.IP when --bind is wildcard or loopback.
- resolveAdvertiseIP(bindIP, advertiseFlag, detected) implements
  precedence: flag > specific bindIP > WAN auto-detect > 127.0.0.1 +
  warning.
- Join resolves advertise before building the JoinRequest so peers record
  a reachable dial target (not 0.0.0.0).
- isMultiNode: trigger on --nodes >= 2 regardless of bind literal; operator
  can now run "init --nodes 3" without typing a specific --bind.
- Init success message prints bind / advertise / loopback three-way split.

Templates:
- spinifex.toml: [nodes.X] gains advertise = "{{.AdvertiseIP}}" rendered
  only when AdvertiseIP is set.
- predastore-multinode.toml: iam.nats_url host wrapped in the same
  {{if eq .BindIP "0.0.0.0"}}localhost{{...}}{{end}} shim that
  predastore.toml already uses, so co-resident predastore dials its local
  NATS via loopback instead of 0.0.0.0.

Tests cover the resolveAdvertiseIP matrix, the template advertise field
(present + omitted), and the predastore nats_url loopback shim.

Dial-site migration and GatewayURL rework land in siv-8.5.

* feat: dial-site migration + GatewayURL AdvertiseIP fallback (mulga-siv-8.5)

Switch every in-process dial site to admin.DialTarget so the wildcard
listen address (0.0.0.0) is rewritten to loopback before Dial(): daemon
→ NATS and → predastore (boot, reconnect, status probe, S3 store, service
manifest write), awsgw → NATS. The TLS cert already SANs 127.0.0.1, so
loopback-dial a wildcard-listen service is always valid; the old
0.0.0.0 literal was tripping TLS SAN verification.

Rework wireLBAgentConfig GatewayURL precedence (spinifex/daemon/daemon.go):

  1. AWSGW on specific WAN IP + br-mgmt present → WAN IP (unchanged)
  2. br-mgmt present, AWSGW on 0.0.0.0     → br-mgmt IP (unchanged)
  3. d.config.AdvertiseIP (single-node default install) → AdvertiseIP (NEW)
  4. DevNetworking shim                    → 10.0.2.2 (unchanged)
  5. AWSGW on specific IP, no bridge       → that IP (unchanged)
  6. Else                                  → log error, skip assignment

Kills the pre-siv-8 silent empty-URL failure mode that made
CreateLoadBalancer fail with 'missing system credentials: gatewayURL='
on every fresh single-node install. Supersedes siv-6's loopback guard.

Extend SetupAWSCredentials with a wanIP parameter (reserved for a
future --operator-endpoint flag) and thread AdvertiseIP through
finalizeNodeSetup's three call sites (single-node init, multi-node
init, join). Print 'Bind / Advertise / Loopback' on multi-node init
and join completion to match the single-node summary.

Plan: docs/development/bugs/spx-admin-init-bind.md §2, §3
2026-04-23 14:02:12 +10:00
Julian Sommer 6026d46ba1 fix: ovn logging 2026-04-08 13:00:06 +10:00
Julian Sommer a56a2baf1f feat: privilege separation (#114) 2026-04-07 16:22:19 +10:00
Julian Sommer 216842cc1b fix: enable ovn on boot 2026-03-27 09:41:23 +10:00
Ben Duncan 4d56565c3f feat: veth pair bridge — link Linux bridge to OVS without conversion
setup-ovn.sh now detects whether the default route is on a Linux bridge
or OVS bridge. When it's a Linux bridge (e.g. br-wan from cloud-init),
instead of destructively converting it, the script creates an OVS bridge
(br-ext) and links them with a veth pair. The Linux bridge keeps its IP,
routes, and ports untouched — no WAN interruption.

Also fixes all pre-existing lint issues (gofmt, ineffassign, errchkjson,
gosec, modernize, whitespace) to bring golangci-lint to 0 issues.

Tested: pool mode with static IP range on single-node (ben-banksia).
VM gets public IP 192.168.1.201, SSH works, outbound internet works.
2026-03-25 10:01:37 +10:00
Ben Duncan 34b50b11fb refactor: setup-ovn.sh — replace br-external with configurable WAN bridge
Replace --external-bridge/--external-iface/--direct with:
- --wan-bridge=NAME: OVS bridge for WAN traffic (auto-detected from
  default route if it's already a bridge)
- --wan-iface=NAME: physical NIC to add to the WAN bridge
- --macvlan: SSH-safe macvlan mode for single-NIC hosts

Auto-detection logic:
- If default route goes through a bridge (br-wan) → use it directly
- If default route is a physical NIC → stop with guidance (never
  auto-move a NIC into OVS — may drop SSH)

Bridge-mappings updated: external:$WAN_BRIDGE (was external:br-external).
OVN logical network name stays "external" (no topology.go change needed).

Encap IP now prefers br-vpc IP when available (dedicated VPC data plane).

Part of mulga-739. Blocks VPC E2E work.
2026-03-24 15:46:49 +10:00
Ben Duncan 88baf5e202 feat: direct bridge mode — prefer over macvlan when WAN NIC != SSH NIC
Auto-detect bridge topology: if a dedicated WAN NIC exists (not used for
SSH), add it directly to br-external instead of creating a macvlan.
Direct bridge enables distributed NAT (DNAT on VM's own chassis) and
eliminates macvlan workarounds (MAC alignment, gratuitous ARPs,
centralized NAT bottleneck).

- topology.go: bridge-mode-aware NAT and localnet port options
- vpcd.go: auto-detect bridge mode, skip MAC alignment for direct bridge
- setup-ovn.sh: --direct flag for physical NIC on br-external
- reset-dev-env.sh: SSH NIC detection via SSH_CONNECTION
2026-03-24 01:57:54 +00:00
Ben Duncan daae6ca6b8 refactor: remove single-nic bridge mode, standardize on macvlan
The single-nic IP migration path was fragile and caused connectivity
issues during setup. macvlan is now the only bridge strategy — always
creates spx-ext-{nic} on the WAN NIC. Removed --single-nic flag,
SingleNIC config/detection fields, and updated all docs.
2026-03-23 01:12:22 +00:00
Ben Duncan 665093343c fix: preserve DNS resolution after IP migration to br-external
When setup-ovn.sh migrates the WAN IP from a physical NIC to
br-external, systemd-resolved loses its DNS association (DNS servers
are per-interface). This breaks hostname resolution for everything
on the host — git, apt, curl, SSH all fail.

Now captures DNS config from the original interface before migration
and re-associates it with br-external via resolvectl. Falls back to
8.8.8.8 if no DNS was configured on the original interface.
2026-03-20 06:57:18 +00:00
Ben Duncan 2af3bf5287 feat: auto-detect network topology + DHCP gateway in admin init
spx admin init now works with zero external networking flags:
- Auto-detects WAN interface, gateway, prefix from ip route
- Auto-detects single-NIC vs multi-NIC mode
- Defaults to nat mode with DHCP for gateway IP
- Prints detected topology with interface roles

setup-ovn.sh gains --dhcp flag: obtains a DHCP lease on the
macvlan/bridge interface for the OVN gateway SNAT address, then
writes gateway_ip into spinifex.toml. Tested on VM: macvlan gets
separate IP from router DHCP, host keeps its original IP.

Three tiers of external networking:
- Zero flags: auto nat+DHCP (VMs get outbound internet)
- --external-pool=start-end: pool mode (VMs get public IPs)
- --no-external: overlay only (no internet for VMs)
2026-03-20 05:45:30 +00:00
Ben Duncan 1ee7012ba9 feat: Phase 7 — single-NIC macvlan bridge strategy
Add --single-nic flag to setup-ovn.sh. When used with --external-bridge,
creates a macvlan sub-interface (spx-ext-{iface}) in bridge mode off the
host's NIC instead of adding the NIC directly to br-external. The host
keeps its IP — no migration, SSH-safe.

Strategy selection:
- Dedicated NIC: --external-iface=eth1 (add directly)
- Single NIC:    --external-iface=eth0 --single-nic (macvlan)
- IP migration:  --external-iface=eth0 (legacy, no --single-nic)

Add single_nic bool field to VPCDConfig for per-node config. Different
nodes in a cluster can use different strategies. Unit test verifies
single_nic parsing alongside external_interface.
2026-03-20 05:15:35 +00:00
Ben Duncan c1cdfc07c3 feat: Phase 1 completion — external IPAM, br-external setup, config template
Add external IPAM module (CAS-based IP allocation from admin-defined
pools in NATS KV). Supports multi-pool with region/AZ scoping, pool
fallback logic, gateway IP reservation, and concurrent allocation via
CAS retries. 12 unit tests covering allocation, release, exhaustion,
CAS conflict, multi-pool, fallback, validation, and idempotent init.

Add --external-bridge flag to setup-ovn.sh: creates OVS bridge
br-external, adds WAN NIC, migrates host IP to bridge, and sets
ovn-bridge-mappings=external:br-external for OVN localnet ports.

Add commented [network] section and external_interface to spinifex.toml
config template for discoverability.
2026-03-20 03:59:47 +00:00
Ben Duncan 5d93786995 refactor: rename hive to spinifex in all shell scripts
- Update scripts/: start-dev, stop-dev, dev-setup, setup, setup-ovn, etc.
- Update tests/e2e/: all E2E test scripts
- Update scripts/iac/: rename hive-test.sh → spinifex-test.sh, update TF files
- Update config/: rename hive.service and install script
- Binary refs use spx, env vars use SPINIFEX_, paths use spinifex
2026-03-18 01:04:12 +00:00
Julian Sommer 4466de04d3 fix: ovn logrotate 2026-03-12 08:24:52 +10:00
Julian Sommer d90bf53eaf fix: log rotate ovn 2026-03-06 10:10:34 +10:00
Julian Sommer 48c0565d47 fix: ovn shut down on stop-dev.sh 2026-03-03 15:12:44 +10:00
Julian Sommer 8188707c91 feat: VPC networking v1 — OVN-based virtual networking for EC2 instances 2026-02-24 14:13:57 +10:00