Changes / GitLab / CI pipelines not starting on merge requests.
GitLab: Major incident: CI pipelines not starting on merge requests.
Summary
Summary pending. The diff below shows exactly what changed.
Incident page: full timeline of updates →
What changed
Before: not present
After: CI pipelines not starting on merge requests.
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After: major
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After: resolved
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After: 2026-06-30 08:52 UTC
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After: 2026-06-30 12:07 UTC
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After: CI/CD, Website
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After: We are currently investigating an issue affecting CI pipelines not starting on merge requests. Our team is actively investigating the root cause.
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After: We have identified that the sidekiq workers processing the jobs are getting deferred. The team is working on identifying the remediation steps.
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After: No material updates to report. We are continuing to investigate the current issue and engineers are working to determine remediation steps.
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After: Our engineers are still investigating the issue but jobs are starting to be processed with a delay. More details can be found here: https://gitlab.com/gitlab-com/gl-infra/production/-/work_items/22412
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After: Queues and runner backlog are trending back towards normal, while systems continue to work through the remaining backlog. Engineers are continuing to monitor this.
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After: Incident has now been mitigated and runner backlogs are now back to normal. CI pipelines are now resuming. Engineers will continue to monitor this recovery.
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History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Major incident: CI pipelines not starting on merge requests. (this change) | Major incident |