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[Alert] Queue monitor liveness #526

Description

@github-actions

Queue monitor liveness failure

The managed-runner queue monitor in melodic-software/ci-runner is not provably alive:

  • No completed monitor run since 2026-08-31T08:22:23Z (window 6h); the scheduler is not delivering it.

Recover

  1. Open the monitor: https://github.com/melodic-software/ci-runner/actions/workflows/queued-job-monitor.yml
  2. If the schedule was disabled, re-enable the workflow.
  3. If a run failed, check the observer App installation grants
    against CI_RUNNER_MONITOR_TARGETS_JSON (every listed
    repository must be granted to the installation) and the
    incident-issue write in ci-runner, then re-run with
    workflow_dispatch to verify.
  4. While the monitor is down, queued self-hosted jobs alert nobody;
    check the fleet before trusting a quiet queue.

Updated automatically by .github/workflows/queue-monitor-liveness.yml.
Closing this issue without restoring the monitor reopens it on the next run.

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