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 Container Management > Kubernetes > How to mount the ConfigMap as a volume

How to mount the ConfigMap as a volume

Author: Venkata Sudhakar

The below example shows how to mount the ConfigMap as a volume in the container. First create ConfigMap with required key value pairs. Next define a volume based on ConfigMap and mount the same in the Container.

view sourceprint?
01$ kubectl create configmap abc-configmap --from-literal aws.access.key=AAAAAAAAAA --from-literal aws.secret.key=BBBBBBBBBB
02configmap/abc-configmap created
03 
04$ cat pod-def.yml
05kind: Pod
06apiVersion: v1
07metadata:
08  name: pod-with-env-var
09spec:
10  containers:
11    - name: env-with-configmap
12      image: bethecoder/docker-http-server:lates
13      volumeMounts:
14        - name: config-volume
15          mountPath: /etc/config
16   
17  volumes:
18    - name: config-volume
19      configMap:
20        # Provide the name of the ConfigMap containing the files you want
21        # to add to the container
22        name: abc-configmap

Now create a POD from the above definition, log into the container and inspect mount path /etc/config. We have one file created for each key value pair in the map.

view sourceprint?
01$ kubectl exec -it pod-with-env-var -- sh
02/app # cd /etc/config/
03 
04/etc/config # ls
05aws.access.key  aws.secret.key
06 
07/etc/config # cat aws.access.key
08AAAAAAAAAA
09 
10/etc/config # cat aws.secret.key
11BBBBBBBBBB

 
  


  
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