IONOS Cloud incident
Partial Connectivity Degradation to Control Plane Affecting Kubernetes Operations in Frankfurt (de/fra)
Resolved after 4 days 4 hours, affecting Managed Kubernetes, on May 15, 2026.
We are marking this incident as resolved. The root cause of the service degradation affecting Kubernetes Control Planes in FRA has been identified as a DDoS attack targeting customers hosted on our infrastructure. This incident has been documented here: https://status.ionos.cloud/incidents/kknrz6284jl0 The identified bottleneck led to the observed intermittent reachability issues and increased latency between Kubernetes etcd nodes for the affected customers.
Affected components
Update timeline
- identified May 15, 2026, 12:18 PM UTC
We are currently investigating service degradation for Control Planes of some Kubernetes clusters in the Frankfurt region (de/fra). This could impact K8s workload changes for several customers. Our teams are working on a fix.
- monitoring May 15, 2026, 01:35 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved May 19, 2026, 04:24 PM UTC
We are marking this incident as resolved. The root cause of the service degradation affecting Kubernetes Control Planes in FRA has been identified as a DDoS attack targeting customers hosted on our infrastructure. This incident has been documented here: https://status.ionos.cloud/incidents/kknrz6284jl0 The identified bottleneck led to the observed intermittent reachability issues and increased latency between Kubernetes etcd nodes for the affected customers.
Your product runs on more than IONOS Cloud
Add the vendors you depend on and get one message when any of them reports trouble. Free for 3 vendors, no card.
Amazon Web Services