Kubernetes Error Code Evicted: How to Fix It

Q: Why do Kubernetes pods get evicted?

Pods get evicted when nodes run low on resources like memory, disk space, or ephemeral storage. The kubelet monitors resource usage and evicts pods to maintain node stability and prevent system crashes.

Q: Can I prevent pod evictions in Kubernetes?

Yes, prevent evictions by setting appropriate resource requests and limits, implementing resource quotas, monitoring node resources, and maintaining adequate cluster capacity. Regular cleanup of unused images and logs also helps.

Q: What happens to data when a pod is evicted?

Data in ephemeral storage (emptyDir volumes) is lost when pods are evicted. Data in persistent volumes remains intact. Always use persistent storage for important data that should survive pod restarts.

Q: How do I recover from Kubernetes evicted pods?

Clean up the evicted pod status with 'kubectl delete pod ', address the underlying storage issue, then let the controller (Deployment, StatefulSet) recreate the pod automatically.

Q: What is ephemeral storage in Kubernetes?

Ephemeral storage includes the container's writable layer, logs, and emptyDir volumes. It's temporary storage that's deleted when the pod is removed and counts toward the node's storage capacity limits.

Abstract

The Kubernetes 'Evicted' error occurs when a pod is forcibly removed from a node due to low ephemeral storage resources. This happens when the node runs out of disk space, triggering the kubelet to evict pods to free up storage and maintain cluster stability.