Question

A developer configures a Pod to persist logs using a hostPath volume pointing to /var/data on the node. During testing, the Pod is rescheduled to a different node after the original node is drained, and the application reports that its previously written data is missing. What is the most accurate explanation of this behavior?

Accepted Answer

A hostPath volume mounts a directory from the specific node's filesystem, so data does not follow the Pod when it is rescheduled to another node.

Answer

hostPath volumes automatically replicate data across all nodes, so the missing data indicates a corrupted CNI plugin.

Answer

hostPath volumes are ephemeral and always deleted when the Pod is restarted, just like emptyDir.

Answer

hostPath data is stored in etcd, and the loss indicates the control plane failed to sync the volume state.