docs(ci): align prod redeploy workflow comments
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@ -36,17 +36,19 @@ name: redeploy-tenants-on-main
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#
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# Runtime ordering:
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# 1. publish-workspace-server-image completes → new :staging-<sha> in ECR.
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# 2. This workflow fires via workflow_run, calls redeploy-fleet with
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# target_tag=staging-<sha>. No CDN propagation wait needed —
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# ECR image manifest is consistent immediately after push.
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# 2. The merge that updates publish-workspace-server-image.yml triggers
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# this push/path-filtered workflow, which calls redeploy-fleet with
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# target_tag=staging-<sha>. No CDN propagation wait needed — ECR image
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# manifest is consistent immediately after push.
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# 3. Calls redeploy-fleet with canary_slug (if set) and a soak
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# period. Canary proves the image boots; batches follow.
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# 4. Any failure aborts the rollout and leaves older tenants on the
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# prior image — safer default than half-and-half state.
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#
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# Rollback path: re-run this workflow with a specific SHA pinned via
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# the workflow_dispatch input. That calls redeploy-fleet with
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# target_tag=<sha>, re-pulling the older image on every tenant.
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# Rollback path: set PROD_MANUAL_REDEPLOY_TARGET_TAG as a repo/org
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# variable or secret, run workflow_dispatch, then unset it after the
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# rollback. That calls redeploy-fleet with target_tag=<value>,
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# re-pulling the pinned image on every tenant.
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on:
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push:
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@ -117,7 +119,7 @@ jobs:
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# dead (staging-verify soft-skips without canary fleet, so
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# the only thing retagging `:latest` today is the manual
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# promote-latest.yml — last run 2026-04-28). Auto-trigger
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# from workflow_run uses workflow_run.head_sha; manual
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# from the main push uses github.sha; manual
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# dispatch with no variable falls through to github.sha.
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env:
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PROD_MANUAL_REDEPLOY_TARGET_TAG: ${{ vars.PROD_MANUAL_REDEPLOY_TARGET_TAG || secrets.PROD_MANUAL_REDEPLOY_TARGET_TAG || '' }}
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@ -292,10 +294,10 @@ jobs:
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if [ "$TARGET_TAG" != "latest" ] \
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&& [ "$TARGET_TAG" != "$EXPECTED_SHA" ] \
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&& [ "$TARGET_TAG" != "staging-$EXPECTED_SHORT" ]; then
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# workflow_dispatch with a pinned tag that isn't the head
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# Manual redeploy with a pinned tag that isn't the head
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# SHA — operator is rolling back / pinning. Skip the
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# verification because we don't have the expected SHA in
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# this context (would need to crane-inspect the GHCR
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# this context (would need to inspect the ECR
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# manifest, which is a follow-up). Failing-open here is
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# safe: the operator chose the tag deliberately.
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#
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