Add init containers, shared namespaces, per-volume sizing, and user/label support #997

prathamesh · 2026-03-12T09:07:21Z

prathamesh commented

2026-03-12 09:07:21 +00:00

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prathamesh added 6 commits 2026-03-12 09:07:22 +00:00

feat(k8s): support init containers via compose labels dcba9e74d9

Add support for k8s init containers defined in docker-compose files
using the `laconic.init-container` label. Services with this label
set to "true" are built as init containers instead of regular
containers in the pod spec.

This enables stacks to fetch runtime-created ConfigMaps (e.g. from
deployer jobs) before the main containers start, without requiring
manual operator steps between deployments.

Example compose usage:

  services:
    fetch-config:
      image: bitnami/kubectl:latest
      labels:
        laconic.init-container: "true"
      command: ["sh", "-c", "kubectl get configmap ..."]
      volumes:
        - shared-config:/config

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Support namespace and kind-cluster-name overrides in spec cfbede2ee8

Add optional 'namespace' and 'kind-cluster-name' fields to spec
files. When 'namespace' is set, SO uses it instead of deriving one
from the cluster-id. When 'kind-cluster-name' is set, SO uses it
for the kube context instead of the cluster-id. Together these allow
multiple stacks with different cluster-ids (unique resource names)
to share a namespace and kind cluster.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

fix(k8s): delete resources by label in shared namespaces da3850a727

When the spec explicitly sets a namespace (shared with other stacks),
down() now deletes only this stack's resources by app label instead of
deleting the entire namespace. Prevents stopping one stack from wiping
all other stacks in the same namespace.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Add app label to Deployment metadata for label-based cleanup 577576fd69

Deployments were the only resource type missing the `app` label on
their metadata. Services, ConfigMaps, PVCs, and Jobs all had it.
Without it, _delete_resources_by_label() in down() couldn't find
Deployments when cleaning up in a shared namespace.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Support compose user: directive as k8s runAsUser 36385f065d

Read the user: field from compose service definitions and map it to
securityContext.runAsUser on the k8s container spec. Needed for init
containers using images that run as non-root by default (e.g.
bitnami/kubectl runs as UID 1001).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Support per-volume resource sizing in spec files

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a9bd110001

Add get_volume_resources_for(volume_name) to look up per-volume storage
sizes from the spec. Supports both the original global format and a new
per-volume format:

  # Global (unchanged, backwards compatible)
  resources:
    volumes:
      reservations:
        storage: 5Gi

  # Per-volume (new)
  resources:
    volumes:
      my-data:
        reservations:
          storage: 10Gi
      my-cache:
        reservations:
          storage: 1Gi

Fallback chain: per-volume -> global -> default (2Gi).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

prathamesh added 1 commit 2026-03-12 10:33:12 +00:00

Fix lint and deploy test failures

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6c00176048

- Rename ambiguous variable 'l' to 'item' in cluster_info.py (flake8 E741)
- Use underscore in test config variable name (Docker Compose rejects
  hyphens in env var names)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

prathamesh merged commit e7483bc7d1 into main

2026-03-12 10:34:46 +00:00

prathamesh deleted branch feature/init-containers

2026-03-12 10:34:46 +00:00

prathamesh referenced this issue from a commit

2026-03-12 10:34:47 +00:00

Add init containers, shared namespaces, per-volume sizing, and user/label support (#997)

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Reference: cerc-io/stack-orchestrator#997