Mirantis Container Cloud (MCC) becomes part of Mirantis OpenStack for Kubernetes (MOSK)!
Starting with MOSK 25.2, the MOSK documentation set will cover all product layers, including MOSK management (formerly MCC). This means everything you need will be in one place. The separate MCC documentation site will be retired, so please update your bookmarks for continued easy access to the latest content.
Troubleshoot Kubernetes system alerts¶
This section describes the investigation and troubleshooting steps for the Kubernetes system alerts.
KubeNodeNotReady¶
Root cause |
A node has entered the
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Investigation |
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Mitigation |
Contact Mirantis support for a detailed procedure on dealing with each of the root causes. |
KubeletTooManyPods¶
Root cause |
The number of Pods reached 90% of Kubernetes node capacity. |
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Investigation |
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Mitigation |
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KubeStateMetricsTargetDown¶
Root cause |
Prometheus scraping of the Related alert: |
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Investigation |
In the Prometheus web UI, search for firing alerts that relate to networking issues in the Container Cloud cluster and fix them. If the cluster network is healthy, refer to the
Investigation section of the
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Mitigation |
Based on the investigation results, select from the following options:
If the issue still persists, collect the investigation output and contact Mirantis support for further information. |
KubernetesMasterAPITargetsOutage¶
Root cause |
The Prometheus Blackbox Exporter target probing Related alert: |
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Investigation |
In the Prometheus web UI, search for firing alerts that relate to networking issues in the Container Cloud cluster and fix them. If the cluster network is healthy, refer to the
Investigation section of the
|
Mitigation |
Based on the investigation results, select from the following options:
If the issue still persists, collect the investigation output and contact Mirantis support for further information. |