Jenkins incident

[publick8s cluster] Azure outage (Update Center, get.jenkins.io, etc.)

Major Resolved View vendor source →

Jenkins experienced a major incident on June 16, 2026, lasting 30s. The incident has been resolved; the full update timeline is below.

Started
Jun 16, 2026, 07:20 AM UTC
Resolved
Jun 16, 2026, 07:20 AM UTC
Duration
30s
Detected by Pingoru
Jun 16, 2026, 07:20 AM UTC

Update timeline

  1. investigating Jun 16, 2026, 07:20 AM UTC

    The cluster and all its services were up and running at 10:02am UTC after many mitigation and operations from the Jenkins Infra team.

  2. investigating Jun 16, 2026, 07:20 AM UTC

    At 08:50am UTC, all services were down due to internal AKS outage (combination of network issue and Azure forbidding us to spin up new VMs).

  3. investigating Jun 16, 2026, 07:20 AM UTC

    We tried to apply mitigations between 08:15am UTC and 08:45am UTC without any success (draining AKS nodes to restart services on fresh VMs).

  4. investigating Jun 16, 2026, 07:20 AM UTC

    Starting on Tuesday 16 June 2026 at 07:30am UTC, the cluster publick8s hosting our public web services such as updates.jenkins.io, get.jenkins.io, LDAP and many others started to drop incoming TCP connections.