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Scenario #315
Storage
Kubernetes v1.25, Bare Metal
CSI Driver DaemonSet Deployment Missing Tolerations for Taints
CSI Node plugin DaemonSet didn’t deploy on all nodes due to missing taint tolerations.
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What Happened
Storage nodes were tainted (node-role.kubernetes.io/storage:NoSchedule), and the CSI DaemonSet didn’t tolerate it, so pods failed to mount volumes.
Diagnosis Steps
- 1CSI node pods not scheduled on certain nodes.
- 2Checked node taints vs DaemonSet tolerations.
- 3Pods stuck in Pending.
Root Cause
Taint/toleration mismatch in CSI node plugin manifest.
Fix/Workaround
• Added required tolerations to DaemonSet.Lessons Learned
Storage plugins must tolerate relevant node taints to function correctly.
How to Avoid
- 1Review node taints and CSI tolerations during setup.
- 2Use node affinity and tolerations for critical system components.