Volume of type Configmap

ConfigMap Volume

We can mount ConfigMap as volume as shown below.

apiVersion: v1
kind: Pod
metadata:
  name: configmap-volume
  namespace: learning
spec:
  containers:
    - image: nginx
      name: nginx
      volumeMounts:
        - name: configmap
          mountPath: /config
  volumes:
    - name: configmap
      configMap:
        name: credentials
        items:
          - key: USERNAME
            path: username.txt
          - key: PASSWORD
            path: password.txt

We must ensure the ConfigMap credentials should be present.

apiVersion: v1
kind: ConfigMap
metadata:
  name: credentials
  namespace: learning
data:
  USERNAME: "nitinsharmacs"
  PASSWORD: "password"

This will mount files username.txt and password.txt with their values as specified in ConfigMap. These mounts are ReadOnly.