* 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