The #1601 follow-on: per-container alert overrides were keyed by Docker
container ID (docker:{host}/{containerID}), which changes on every
recreate, so each image update silently re-armed alerts the user had
switched off and left a dead entry behind in alerts.json — the unbounded
growth that pushed the reporter's config past the old 64KB body cap
(raised in 38434a513). The v6 thresholds UI additionally wrote keys from
the unified hash id (docker:{host}/app-container-{16hex}), which the
evaluator never read at all.
Overrides now key on stable identity, docker:{host}/{containerName}:
- The evaluator resolves the name key first and falls back to the legacy
container-ID key so pre-migration entries keep working
(evaluateDockerContainer, checkDockerContainerState, the
container-update resolver, and reevaluateActiveAlertsLocked).
- MigrateDockerContainerOverrideKeys runs in the monitor sync next to
MigrateCanonicalOverrideKeys, driven by the unified resource snapshot:
it re-homes live legacy-ID and unified-hash keys onto the name key and
prunes orphaned ID-shaped entries, ending the per-update orphan
accumulation. Name-keyed entries for absent containers are kept so a
recreate under the same name still honours them.
- The UI candidate chain (single implementation in alertOverridesModel)
now leads with docker:{host}/{name} and trails the container-ID, short
ID, unified-hash and slash-tail forms, so rows bind pre-existing
overrides of every historical shape and the next save re-homes them.
Rows carry overrideStorageId/overrideIdCandidates so toggle,
connectivity, offline-state, edit and remove all write the stable key.
- The ignored-containers card copy now documents the wildcard forms
(runner-*, *-dev, *staging*) shipped in b5fa6a9af, under the title
"Ignored container patterns".
Contract deltas: alerts, frontend-primitives, monitoring, and
unified-resources now pin the name-keyed override identity, the single
frontend candidate-chain owner, the sync-cadence migration, and the
resource-facet-backed table identity respectively.
Verified live against a mock instance: a UI toggle persists
docker:{host}/loki and binds back after reload, and seeded
legacy/hash/orphan keys converge to name keys on disk within two sync
ticks. go test ./internal/alerts/... ./internal/monitoring/... green;
recreate survival pinned in
TestDockerContainerOverrideSurvivesContainerRecreate.
Refs #1601
rcourtman
69b5ec22fd