Jinwoo Hong 744e7722c2 fix(relay): accept MIG version-name reconciliation and recreate stranded cells without rewriting the MIG (#24373) ...

* fix(relay): accept MIG version-name reconciliation and recreate stranded cells without rewriting the MIG

The stranded-rollback recovery ran a gcloud rolling action, which renames the
MIG version outside Terraform. Every later plan for that cell then reverted the
label, and the capacity-plan validator refused the revert as an unreviewed MIG
change, so the cell could be neither rolled nor rolled back.

The validator now accepts a MIG field moving back to what relay-gce-cells.tf
declares (version name and update policy), in every mode, and a test pins those
values to the Terraform file. The stranded branch recreates the cell's single
instance with recreate-instances, which leaves the MIG untouched.

Claude-Session: ced32ebb-7155-4413-adad-1eccd14c2010

* fix(relay): let a label-only MIG plan through and recreate on it in a stranded rollback

A stranded rollback whose template is already in place plans only the version
name revert. The validator still required the MIG template to move, so that
plan was refused, and the recreate gate (changes == 0) would have skipped a
plan of one change and left the drain flag set. Require the template move only
when no declared field reconciles, and recreate whenever the template was not
replaced (changes < 2).

Claude-Session: ced32ebb-7155-4413-adad-1eccd14c2010

2026-10-01 08:12:49 -04:00

..

contracts

infra(relay): raise asia-east2 cell pools to 16 and record the measured connection ceiling (#21163)

2026-09-17 02:00:17 -04:00

fixtures/terraform-root-partition

feat(relay): alert on relay cell table lock convoys (#22446)

2026-09-23 03:24:09 -04:00

scripts

fix(relay): accept MIG version-name reconciliation and recreate stranded cells without rewriting the MIG (#24373)

2026-10-01 08:12:49 -04:00