How to include script and run it into kubernetes yaml?

Question

It is how to run simple batch in kubernetes yaml (helloworld.yaml):

...
image: "ubuntu:14.04"
command: ["/bin/echo", "hello", "world"]
...

In Kubernetes i can deploy that like this:

$ kubectl create -f helloworld.yaml

Suppose i have a batch script like this (script.sh):

#!/bin/bash
echo "Please wait....";
sleep 5

Is there way to include the script.sh into kubectl create -f so it can run the script. Suppose now helloworld.yaml edited like this:

...
image: "ubuntu:14.04"
command: ["/bin/bash", "./script.sh"]
...

Answer 1

I'm using this approach in OpenShift, so it should be applicable in Kubernetes as well.

Try to put your script into a configmap key/value, mount this configmap as a volume and run the script from the volume.

apiVersion: batch/v1 kind: Job metadata:   name: hello-world-job spec:   parallelism: 1       completions: 1       template:              metadata:       name: hello-world-job     spec:       volumes:       - name: hello-world-scripts-volume         configMap:           name: hello-world-scripts       containers:       - name: hello-world-job         image: alpine         volumeMounts:           - mountPath: /hello-world-scripts             name: hello-world-scripts-volume         env:           - name: HOME             value: /tmp         command:         - /bin/sh         - -c         - |           echo "scripts in /hello-world-scripts"           ls -lh /hello-world-scripts           echo "copy scripts to /tmp"           cp /hello-world-scripts/*.sh /tmp           echo "apply 'chmod +x' to /tmp/*.sh"           chmod +x /tmp/*.sh           echo "execute script-one.sh now"           /tmp/script-one.sh       restartPolicy: Never --- apiVersion: v1 items: - apiVersion: v1   data:     script-one.sh: |       echo "script-one.sh"       date       sleep 1       echo "run /tmp/script-2.sh now"       /tmp/script-2.sh     script-2.sh: |       echo "script-2.sh"       sleep 1       date   kind: ConfigMap   metadata:     creationTimestamp: null     name:  hello-world-scripts kind: List metadata: {} 

Answer 2

As explained here, you could use the defaultMode: 0777 property as well, an example:

apiVersion: v1
kind: ConfigMap
metadata:
  name: test-script
data:
  test.sh: |
    echo "test1"
    ls
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test
spec:
  selector:
    matchLabels:
      app: test
  template:
    metadata:
      labels:
        app: test
    spec:
      volumes:
      - name: test-script
        configMap:
          name: test-script
          defaultMode: 0777
      containers:
      - command:
        - sleep
        - infinity
        image: ubuntu
        name: locust
        volumeMounts:
          - mountPath: /test-script
            name: test-script

You can enter into the container shell and execute the script /test-script/test.sh