configmap file as executable script

[FritschAuctores]

What would you like to be added:

A configmap file as executable script into a pod

apiVersion: v1
kind: ConfigMap
metadata:
  name: test-script
data:
  test.sh: |
   #!/bin/bash
   echo "Hello World"

Pod:

...
       volumeMounts:
        - name: test-script
          mountPath: /script/test.sh
          subPath: test.sh
      - name: test-script
        configMap:
          name: test-script
...

Inside the Pod:

From
-rw-r--r-- 1 root root 1.3K Nov 22 15:32 test.sh
To
-rwxr-xr-x 1 root root 1.3K Nov 22 15:41 test.sh

Why is this needed:

It is easier to create a flexible Pod

/kind feature

[k8s-ci-robot]

@FritschAuctores: There are no sig labels on this issue. Please add a sig label by either:

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[FritschAuctores]

/sig-feature-requests

[tossmilestone]

@FritschAuctores It's already supported in k8s to specify the file permissions of mounted configmap files. You can reference the usage in secret https://kubernetes.io/docs/concepts/configuration/secret/#using-secrets-as-files-from-a-pod.

[FritschAuctores]

Thank you, this works:

Pod:

...
       volumeMounts:
        - name: test-script
          mountPath: /script/test.sh
          subPath: test.sh
      - name: test-script
        configMap:
          name: test-script
          defaultMode: 0777
...

/close

[ToniRib]

For anyone that lands here and is wondering how you set this is you're using JSON overrides, you need the decimal equivalent of the defaultMode octal. This works:

    "volumes": [
      {
        "name": "database-administration-config",
        "configMap": {
          "name": "database-administration-config",
          "defaultMode": 493
        }
      }
    ]