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Outage in IONOS Cloud

K8s Control Planes not available

Resolved Major
May 08, 2026 - Started 7 days ago - Lasted 3 days
Official incident page

Incident Report

Summary AI Generated

IONOS Cloud experienced a major incident where customers encountered connection problems to Kubernetes control planes and degraded functionality in their Managed Kubernetes service. The issue was caused by a defect in a configuration filtering mechanism that led to inadvertent configuration changes on affected resources. The incident lasted 65.3 hours and was resolved through a rollback of the identified changes, followed by monitoring to check for residual inconsistencies.

Some customers may experience connection problems to the control plane and degraded functionality of kubernetes. Our engineers are working on a fix.

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Latest Updates ( sorted recent to last )
RESOLVED 4 days ago - at 05/11/2026 08:30AM

We are marking this incident as resolved. A RCA will be published here once it is compiled.

MONITORING 7 days ago - at 05/08/2026 08:42PM

The rollback was completed successfully. The team is currently checking the affected resources for potential residual inconsistencies. We are setting this incident into monitoring status.

IDENTIFIED 7 days ago - at 05/08/2026 06:42PM

We are currently rolling out the correction. We expect this to take several minutes and will update this page once the rollout is completed.

IDENTIFIED 7 days ago - at 05/08/2026 05:13PM

The team is now preparing to safely rollback identified changes on affected resources.

IDENTIFIED 7 days ago - at 05/08/2026 04:29PM

The team continues to audit affected resources to verify that all remaining inadvertent configuration changes are reverted.

IDENTIFIED 7 days ago - at 05/08/2026 03:52PM

Our Kubernetes engineering team has identified the root cause of the issue. The incident stemmed from a defect in a configuration filtering mechanism. We are currently implementing mitigation steps and will provide further updates on our progress here.

INVESTIGATING 7 days ago - at 05/08/2026 03:15PM

Some customers may experience connection problems to the control plane and degraded functionality of kubernetes.
Our engineers are working on a fix.

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