Ephemeral storage

When local ephemeral (temporal) storage is needed, an emptyDir should be issued. It is local to the node, on Rahti 2 this is RAID-1 SSD storage. It can be shared across several containers in the same Pod, and it the fastest filesystem available in Rahti 2 but it will be lost when the Pod is killed or restarted. It is declared directly in the Pod definition:

podWithEmptydDir.yaml:

apiVersion: v1
kind: Pod
metadata:
  name: my-app
  labels:
    app: my-application
  spec:
    volumes:
    - name: volume-a
      emptyDir: {}
    containers:
    - name: container-a
      image: centos:7
      volumeMounts:
      - mountPath: /outputdata
        name: volume-a
    - name: container-b
      image: centos:7
      volumeMounts:
      - mountPath: /interm
        name: volume-a

emptyDir

Last update: December 8, 2023