📖 ~1 min read
Table of contents
Symptom & Impact
microk8s status returns not running or not ready, blocking local cluster workloads and CI tests.
Environment & Reproduction
Common after kernel changes, low memory, or interrupted snap refresh operations.
Root Cause Analysis
Critical services such as dqlite or kube-apiserver fail due to resource limits or corrupted state.
Quick Triage
Run microk8s status –wait-ready and check snap service health with systemctl status snap.microk8s*.
Step-by-Step Diagnosis
Collect diagnostics via microk8s inspect and review logs under /var/snap/microk8s/current/var/log/.
Solution – Primary Fix
Restart MicroK8s with sudo microk8s stop && sudo microk8s start, refresh snap if needed, and re-enable required add-ons.
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Solution – Alternative Approaches
Reset cluster state using microk8s reset when non-production data can be recreated safely.
Verification & Acceptance Criteria
microk8s kubectl get nodes shows Ready and core add-ons become healthy.
Rollback Plan
Revert to previous snap revision if current channel update introduced startup regression.
Prevention & Hardening
Reserve adequate RAM and disk IOPS and avoid abrupt shutdowns during control-plane updates.
Related Errors & Cross-Refs
Related issues include API server timeout and failing container runtime sockets.
Related tutorial: View the step-by-step tutorial for Ubuntu 26.04 LTS.
View all Ubuntu 26.04 LTS tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
MicroK8s documentation, snap service management docs, and Ubuntu Kubernetes guides.
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