Use Cases
Software Products MSPs Schools Development & Marketing DevOps Agencies Help Desk
 
Internet Status Blog Pricing Log In Try IsDown for free now

Outage in IONOS Cloud

MK8s: Partial Connectivity Degradation to Control Planes

Resolved Major
March 16, 2026 - Started 21 days ago - Lasted 1 day
Official incident page

Incident Report

Summary AI Generated

IONOS Cloud experienced a 32.7-hour incident where customers encountered connection problems to Managed Kubernetes control planes and degraded functionality, with the issue expanding to affect Container Registry, DBaaS, and AI Model Hub services. The root cause was identified as resource constraints within the etcd database, which caused recurring load spikes that impacted system stability. The incident was resolved by applying fixes and changes to all affected clusters, with all control planes returning to a stable state.

Some customers may experience connection problems to the control plane and degraded functionality of kubernetes. Our teams are investigating and working on a resolution.
Components affected
IONOS Cloud Managed Kubernetes

Need to monitor IONOS Cloud outages?

  • Monitor all your external dependencies in one place
  • Get instant alerts when outages are detected
  • Be the first to know if service is down
  • Show real-time status on private or public status page
  • Keep your team informed
Latest Updates ( sorted recent to last )
RESOLVED 20 days ago - at 03/17/2026 05:04PM

This incident is now marked resolved, as all affected control planes have returned to and stayed in a stable state.
A Root Cause Analysis (RCA) is underway and will be published here once finalized.

MONITORING 20 days ago - at 03/16/2026 07:59PM

Final changes have been applied to all afffected clusters resolving the issue. We are now monitoring the progress

IDENTIFIED 20 days ago - at 03/16/2026 07:58PM

Final changes have been applied to all afffected clusters resolving the issue. We are now monitoring the progress

IDENTIFIED 20 days ago - at 03/16/2026 07:34PM

The changes applied to some control plane clusters have had positive effects. The team is continuing the rollout to other affected clusters.

IDENTIFIED 21 days ago - at 03/16/2026 01:56PM

We are marking DBaaS as recovered.
Our Kubernetes Team is currently working on stabilizing the Kubernetes Control Plane. We are focusing on mitigating recurring load spikes influencing stability.

IDENTIFIED 21 days ago - at 03/16/2026 12:57PM

We are marking the Container Registry Service as recovered.

IDENTIFIED 21 days ago - at 03/16/2026 12:22PM

We are closing the incident for the AI Model Hub. All metrics have recovered and the service should be up and running again normally.

IDENTIFIED 21 days ago - at 03/16/2026 11:57AM

We are adding the Container Registry as an affected Service. Customers may currently experience issues pulling and pushing images from the Registry.

IDENTIFIED 21 days ago - at 03/16/2026 11:37AM

Our Kubernetes Team has deployed a fix for the affected AI Model Hub Database Services. We currently see metrics improving and monitoring the situation closely.

IDENTIFIED 21 days ago - at 03/16/2026 11:05AM

We are expanding the scope of this incident to include DBaaS and AI Model Hub. We have observed an increased error count originating from PostgresDB on Kubernetes. Additionally, to improve transparency, the previously reported separate incident regarding the AI Model Hub (https://status.ionos.cloud/incidents/rmgs845klm32) is being merged into this primary incident.

IDENTIFIED 21 days ago - at 03/16/2026 10:04AM

The team has identified the root cause as a resource constraint within the etcd database. Mitigation efforts are currently underway.

INVESTIGATING 21 days ago - at 03/16/2026 08:24AM

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

Never miss outages in third-party dependencies

With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.

Start free trial

No credit card required · Cancel anytime · 6020 services available

Integrations with Slack Microsoft Teams Google Chat Datadog PagerDuty Zapier Discord Webhook