How to include script and run it into kubernetes yaml? - openshift

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