2022-12-15: Intermittent 500 when visiting QA group on production canary
Current Status
Intermittent timeouts resulting in 500 errors on several pages were identified. This appears related to a recent change to an existing feature. Issue confirmed through QA test job.
- The relevant feature flag
ban_user_feature_flag
was disabled - QA testing internal link
- A revert MR was merged gitlab-org/gitlab!107038 (merged)
- The feature flag
ban_user_feature_flag
was re-enabled (as this affects more areas of the application than the revert covered)
Note a prior concern with the performance of this feature gitlab-org/gitlab#383552 (closed) won't be resolved by the revert.
For customers believed to be affected by this incident, please subscribe to this issue or monitor our status page for further updates.
📚 References and helpful links
Recent Events (available internally only):
- Feature Flag Log - Chatops to toggle Feature Flags Documentation
- Infrastructure Configurations
- GCP Events (e.g. host failure)
Deployment Guidance
- Deployments Log | Gitlab.com Latest Updates
- Reach out to Release Managers for S1/S2 incidents to discuss Rollbacks and/or Hot Patching | Rollback Runbook | Hot Patch Runbook
Use the following links to create related issues to this incident if additional work needs to be completed after it is resolved:
- Corrective action ❙ Infradev
- Incident Review ❙ Infra investigation followup
- Confidential Support contact ❙ QA investigation
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