On startup the agent had no reconcile pass: Run registered, heartbeat, and
immediately polled assignments with an in-memory dedup map. After a restart the
gateway re-delivers the instance's assignments and the agent re-ran them,
orphaning containers still running from before and double-starting tasks.
Add a reconcile() pass that runs once before polling: it lists the runtime's
containers, and for each task still running in this cluster re-registers its IAM
credentials, re-attaches the exit-wait, and refreshes RUNNING on the gateway.
The adopted task set seeds pollAssignments so re-delivered assignments are acked
but not re-run.
- runtime: add a label-agnostic List(ctx) []Container to the Runner seam, with a
containerd implementation and fake support.
- taskLabels: stamp credID / taskRoleArn / eniMac (when set) so a container is
self-describing enough to re-register creds and tear down its netns on adoption.
- pollAssignments takes the seed dedup map.
Best-effort: a nil runner or a List error degrades to today's poll+run behaviour.
* feat(ecs): provision EC2 container-instance capacity via IMDS instance-role
Adds a ProvisionCapacity gateway action that launches spinifex-ecs-node
EC2 instances which register as ECS container instances, fixing
RESOURCE:placement when a cluster has no capacity.
Agent control-plane now SigV4-signs gateway calls with instance-role
credentials read from IMDS (no static keys seeded in user-data). The
gateway already verifies STS/temp creds, so the instance role carries an
ecs:* policy + ec2 trust; ensureECSInstanceProfile find-or-creates the
ecsInstanceRole instance profile attached at launch.
Backend resolves the spinifex-ecs-node AMI by spinifex:managed-by=ecs
tag, renders keyless user-data, and launches via the customer
RunInstances path. Frontend adds a hand-signed JSON-1.1 ProvisionCapacity
call, a provision-capacity dialog on the container-instances tab, and the
ECS console section nav + system-image gating.
* feat: auto-assign EIPs to awsvpc service tasks; add ECS task/service detail pages
Wire AssignPublicIp=ENABLED through the service reconciler so awsvpc service
tasks automatically allocate and associate an Elastic IP on the RUNNING
transition, and release it on STOP. assignTaskPublicIP/releaseTaskPublicIP
mirror the target-group registration hooks in recordTaskState and forceStopTask;
the public IP and allocation ID are persisted on the task record and surfaced in
DescribeTasks attachments as publicIPv4Address.
Add AWS-parity ECS task and service detail pages showing private and public
endpoints, container state, and networking configuration, reachable by clicking
a task or service in the cluster tabs.
* test: cover natsEIPManager allocate/associate/release over NATS
Serve task-role credentials to containers the AWS-faithful way: an HTTP
endpoint at 169.254.170.2:80 inside the ecs-agent (host VM netns) serving
short-lived credentials at /v2/credentials/{credID}. Containers find it via
AWS_CONTAINER_CREDENTIALS_RELATIVE_URI, injected per container.
The agent mints credentials by SigV4-signing sts:AssumeRole(taskRoleARN)
against the gateway with its instance-role credentials, mirroring
internal/ecrauth. This reconciles ecs-v1 Q4/Q10 (STS over NATS + scheduler
JWT assertion) with the 4f rewire that moved the agent entirely onto the
gateway: the agent has no NATS connection and already holds instance creds,
so it assumes the task role directly. Credentials are cached per credID and
refreshed near expiry.
Each awsvpc task netns gets a credentials veth into the host netns and a
host-routed /32 to the endpoint, keeping it off the task ENI's VPC route.
The scheduler now persists taskRoleArn on the task definition and carries it
in the assign payload so the endpoint activates end to end.
* feat(ecsgw): on-VM SigV4 client for the ECS agent→gateway channel
Adds internal/ecsgw, the twin of internal/eksgw: a TLS + SigV4 (service "ecs")
client the ecs-agent will use to reach the AWS gateway over HTTPS instead of
connecting to host NATS directly. Calls are AWS JSON 1.1 with an X-Amz-Target
action; the gateway relays onto ecs.* host-side, keeping NATS cluster-internal.
* feat(ecs): SubmitTaskStateChange gateway action → recordTaskState
Wires the AWS-API SubmitTaskStateChange action end to end (gateway action →
ecs.SubmitTaskStateChange NATS → daemon → Service.SubmitTaskStateChange) so a
gateway-routed agent reports task state without touching the NATS bus. The
handler maps the SDK input onto the same bus.TaskState shape and converges on
recordTaskState; the account is authoritative from the SigV4 caller, so an
instance cannot report state for another account's task.
* feat(ecs): durable assign KV inbox + PollAssignments gateway action
Scheduler writes task assigns into a per-instance KV inbox
(clusters/{cluster}/assignments/{instance}/{task}) instead of a
fire-and-forget core-NATS publish, and a new PollAssignments gateway
action lets a gateway-routed agent drain its inbox over TLS+SigV4.
At-least-once: an unacked assign is re-delivered on the next poll;
the agent acks accepted assigns (AckTaskIDs) and STOPPED transitions
reclaim stale inbox entries. The Poll response carries bus.Assign with
an RFC3339 time, so it is encoded with encoding/json (RawJSONActions)
rather than the jsonutil epoch-second marshaler.
* feat(ecs-agent): rewire control-plane off NATS onto the AWS gateway
The agent no longer connects to NATS. It registers, heartbeats, reports
task state, and receives assignments entirely through the AWS gateway
over TLS+SigV4, using seeded IAM credentials — keeping the NATS bus
host-internal and closing the trust-boundary gap (a tenant container
instance must not hold a shared bus token).
- controlPlane seam over ecsgw.Client replaces the NATS publisher:
Register (RegisterContainerInstance), SubmitTaskState
(SubmitTaskStateChange), PollAssignments.
- Heartbeat folds into a periodic idempotent re-register (refreshes
LastSeen); bus.Heartbeat is dropped from the agent.
- subscribeAssign (NATS subscribe) becomes a poll loop: drain the
inbox, dispatch each assign once, ack accepted taskIDs on the next
poll (at-least-once).
- config: ECS_ACCESS_KEY / ECS_SECRET_KEY / ECS_POLL_INTERVAL added,
ECS_NATS_URL removed; cloud-init initd seeds the IAM creds.
Tests move from the NATS publisher fake to a controlPlane fake.
* feat(ecs): cloud-init cred-seed + ecs-node bring-up script
ECS container instances are plain EC2 booted from the spinifex-ecs-node
AMI (AWS-faithful: no ECS-specific launch API). This renders the
cloud-init user-data that seeds /etc/spinifex-ecs/agent.env (gateway
URL/CA/region/cluster + IAM creds) and the gateway CA, then runs the
instance. The agent registers, heartbeats, polls assignments, and
reports task state entirely through the AWS gateway over TLS+SigV4 —
never NATS.
The guest dials the customer-facing gateway address (network advertise
IP), not the mgmt bridge, mirroring the EKS GatewayURL/AddonGatewayURL
split. Seeds the system key for now; scoped per-instance creds are a
follow-up (4g task-role endpoint).
* fix(ecs): reconcile dev merge — restore #418 ENI release + netns wiring
The 'Merge branch dev' resolution dropped code where Sprint 4d (#418,
awsvpc ENI-per-task) and the gateway control-plane rewrite (#419) touch
the same paths:
- recordTaskState STOPPED branch: reclaimTaskENI was clobbered by
reclaimAssignInbox; both are needed (release the task ENI AND drain the
KV inbox). Restores TestRecordTaskState_Awsvpc_ReleasesENIOnStopOnce.
- ecs-agent Agent: the netns field, its init, and the setupTaskNetns/
teardownTaskNetns wrappers were lost when the controlPlane Agent struct
won the merge, leaving taskrun.go calling undefined methods.
- eni_test assign assertion read the assign over NATS; #419 delivers it via
the durable KV inbox, so it now polls via PollAssignments.
- taskrun_test netns cases used the removed historyPub fake; switched to
fakeCP to match the controlPlane seam.
* feat(ecs): awsvpc ENI-per-task control plane (Sprint 4d)
Scheduler owns the task-ENI lifecycle for awsvpc mode: allocate from the
task subnet on placement, hot-plug onto the container instance, plumb ENI
identity through the assign payload + task record, and detach+delete on
STOPPED (graceful + reaper, idempotent leak guard). bridge/host unchanged.
* feat(ecs-agent): awsvpc guest-side task netns from hot-plugged ENI
The agent builds a per-task network namespace for awsvpc tasks: it finds the
hot-plugged ENI NIC by MAC, moves it into /var/run/netns/ecs-<taskID>, and DHCPs
the OVN-assigned ENI IP. The container then joins that netns via the OCI network
namespace path; bridge/host tasks keep the host (VM) netns as before.
* build(ecs-node): add iproute2 for awsvpc task netns
The ecs-agent builds awsvpc task network namespaces with `ip netns`, which
busybox's `ip` applet does not implement. Install iproute2 in the ecs-node AMI;
udhcpc (for the in-netns ENI DHCP lease) is already provided by busybox.
Add the ECS v1 scheduler control loop and end-to-end RunTask flow:
- handlers/ecs: per-account KV-backed Service (clusters, task definitions,
container instances, tasks), bin-pack/spread/random placement with CAS
capacity reservation, and a leader-elected Scheduler that owns the Layer-2
bus subscriptions (register/heartbeat/task-state) plus a heartbeat reaper.
- gateway/ecs: wire CreateCluster, Describe/ListClusters,
Register/Describe/ListTaskDefinitions, Register/Describe/ListContainerInstances,
RunTask, Describe/ListTasks onto the daemon over NATS.
- daemon: construct the Service, start the Scheduler goroutine, subscribe the
ECS action subjects.
- ecs-agent: subscribe the per-instance assign subject, pull and run each
container via containerd, and report task state back on the bus.
* feat(ecs): ecs-agent skeleton + containerd image pull (Sprint 4c)
Add the ecs-agent binary that runs inside an ECS container instance: it
resolves host identity from IMDS, registers on the Layer-2 NATS bus, and
heartbeats while alive. Image pulls go through a containerd-backed
ImagePuller behind an interface, with an ECR resolver that mints
GetAuthorizationToken creds from the instance role.
Extract the IMDS-credential and ECR-auth flow out of
ecr-credential-provider into internal/imdscreds and internal/ecrauth so
the agent and the kubelet provider share one implementation.
Add spinifex/handlers/ecs/bus as the single source of truth for Layer-2
subject builders and wire payloads, shared by the agent now and the
scheduler in Sprint 4e.
* build: pin genproto via replace to fix containerd/v2 ambiguous import
go.opencensus.io -> grpc@v1.33.2 drags the pre-split monolithic genproto
into the module graph; it still ships googleapis/rpc/status, which collides
with the split genproto/googleapis/rpc module that containerd/ttrpc needs.
The main module never imports the monolith, so a plain require bump is
dropped by 'go mod tidy'. Pin it with a replace to a post-split version so
the fix survives tidy and contributors can run 'go mod tidy' freely.
* fix(ecs): agent boot failsafes from runtime verify
- Build the ECR gateway HTTP client lazily on first image pull instead of
at boot. A missing/malformed gateway CA no longer kills the agent before
it can register + heartbeat, matching the best-effort containerd path.
- Actively probe containerd with IsServing in runtime.New. The client dials
lazily, so a dead socket previously slipped past the boot-time
'containerd unavailable' warn and only surfaced on the first pull.
- Make the heartbeat interval configurable via ECS_HEARTBEAT_INTERVAL
(default 30s) for test/verify and slow-link tuning.
Josh Siviour