CODEWITHSUNDEEP
kubernetes
HARI KRISHNA
HARI KRISHNA

Reputation: 11

two container pod creation in kubernetes

create a pod that runs two containers and ensure that the pod has shared volume that can be used by both containers to communicate with each other write an HTML file in one container and try accessing it from another container

can anyone tell me how to do it

Upvotes: 1

Views: 91

Answers (1)

Harsh Manvar
Harsh Manvar

Reputation: 30170

Example pod with multiple containers

apiVersion: v1
kind: Pod
metadata:
  name: two-containers
spec:

  restartPolicy: Never

  volumes:
  - name: shared-data
    emptyDir: {}

  containers:

  - name: nginx-container
    image: nginx
    volumeMounts:
    - name: shared-data
      mountPath: /usr/share/nginx/html

  - name: debian-container
    image: debian
    volumeMounts:
    - name: shared-data
      mountPath: /pod-data
    command: ["/bin/sh"]
    args: ["-c", "echo Hello from the debian container > /pod-data/index.html"]

Official document : https://kubernetes.io/docs/tasks/access-application-cluster/communicate-containers-same-pod-shared-volume/

Above example is using the empty dir so if you POD restart or Start again you will lose the data.

If you have any requirements to save the data i would suggest using the PVC instead of the empty dir.

i would recommend using the NFS if you can.

Upvotes: 1

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