incident
outage
pilot
Impact
Service unavailable in the given window.
Root Cause
VSAN disk failures; VMs switched to read‑only; two of three DB nodes impacted.
Resolution
VSAN stabilized and writable filesystems restored; service back online since 18:00.
Additional Details
On May 7, 2025, gitlab.git.nrw was unavailable from approximately 14:30 to 18:00 CEST.
Multiple disk failures in the VSAN cluster in Münster caused several VMs to switch to read‑only filesystems. Two of the three database nodes were affected at the same time, which stopped GitLab.
After stabilizing the VSAN cluster and restoring writable filesystems, the service has been fully available again since 18:00. As we are still in pilot, we continue to harden the platform and closely monitor the systems.