Postmortem: Involuntary Security Upgrade

Incident Timeline

1. 14:43 CET: Initiation of a security upgrade.
2. 14:58 CET: First service began experiencing significant degradations, escalating to disruptions.
3. 14:58 - 16:34 CET: Continued degradations and disruptions as the upgrade progressed.
4. 16:34 CET: Completion of the upgrade, restoring the cluster to its operational state.
5. Post-Upgrade Inspection: Document ingestion was found to be non-functional.
6. **17...