Outage in IONOS Cloud
Managed Kubernetes - Intermittent Control Plane Unavailability
Resolved MinorIncident Report
Summary AI Generated
IONOS Cloud's Managed Kubernetes service experienced a 5-minute control plane instability on September 23, 2026, degrading administrative and management capabilities. Existing application workloads continued to run normally throughout the incident. The issue was resolved following investigation by the engineering team.
We are currently experiencing control plane instability affecting our managed Kubernetes clusters. While existing application workloads continue to run normally, administrative and management capabilities are currently degraded. Our engineering team is actively working on a resolution, and we will provide updates as new information becomes available.
Components affected
IONOS Cloud Managed KubernetesTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
13 days ago - at 09/24/2026 05:43AM
The incident has been mitigated successfully at approx. 19:00 UTC, 23.09.2026. The teams involved are currently investigating the root cause and we will publish a report here once it is compiled.
IDENTIFIED
13 days ago - at 09/23/2026 06:32PM
We have successfully identified and mitigated a high-latency condition in our core storage infrastructure that temporarily impacted the responsiveness of the Kubernetes control plane. Our engineering team is currently executing a phased reconciliation and rollout process to gracefully restart the management instances and restore full functionality. Existing application workloads continue to run normally and remain unaffected.
INVESTIGATING
14 days ago - at 09/23/2026 05:15PM
We are currently experiencing control plane instability affecting our managed Kubernetes clusters. While existing application workloads continue to run normally, administrative and management capabilities are currently degraded. Our engineering team is actively working on a resolution, and we will provide updates as new information becomes available.
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