helm hook post-install shell script execution

Question

I am trying to set helm "post-install" hook and seeing below error. ERROR: sh: script/jenkins.sh: not found

postinstall.yaml content

apiVersion: batch/v1
kind: Job
metadata:
  name: "{{ .Release.Name }}"
  annotations:
    # This is what defines this resource as a hook. Without this line, the
    # job is considered part of the release.
    "helm.sh/hook": post-install
    "helm.sh/hook-weight": "-5"
spec:
  template:
    spec:
      containers:
      - name: post-install-jenkins-job
        image: alpine:3.3
        imagePullPolicy: IfNotPresent
        command: [ "/bin/sh", "-c", "scripts/jenkins.sh"]
      restartPolicy: Never
      terminationGracePeriodSeconds: 0

Folder structure of helm package scripts/jenkins.h is the script that I am trying to execute with "postinstall.yaml" as post-install helm hook.

riq-agent
├── Chart.yaml
├── README.md
├── scripts
│   └── jenkins.sh
├── templates
│   ├── NOTES.txt
│   ├── Untitled-1.yml
│   ├── _helpers.tpl
│   ├── awssecret.yaml
│   ├── clusterrolebinding.yaml
│   ├── configurationFiles-configmap.yaml
│   ├── deployment.yaml
│   ├── hook-aws-ecr.yaml
│   ├── initializationFiles-configmap.yaml
│   ├── postinstall.yaml
│   ├── pvc.yaml
│   ├── secrets.yaml
│   ├── serviceaccount.yaml
│   ├── servicemonitor.yaml
│   ├── svc.yaml
│   └── tests
│       ├── test-configmap.yaml
│       └── test.yaml
└── values.yaml

Is there any mistakes in the way that I am trying to execute a shell script (stored within helm package) in helm hook?

Answer 1

In order to be executed, scripts/jenkins.sh should be a part of post-install-jenkins-job container, mounted as a volume. You can populate a volume with data stored in a configmap.

postinstall-configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ .Release.Name }}-postinstall-configmap
data:
  jenkins.sh: |-
{{ .Files.Get "scripts/jenkins.sh" | indent 4}}

postinstall.yaml

apiVersion: batch/v1
kind: Job
metadata:
  name: "{{ .Release.Name }}"
  annotations:
    "helm.sh/hook": post-install
    "helm.sh/hook-weight": "-5"
spec:
  template:
    spec:
      containers:
      - name: post-install-jenkins-job
        image: alpine:3.3
        imagePullPolicy: IfNotPresent
        command: [ "/bin/sh", "-c", "/opt/scripts/jenkins.sh"]
        volumeMounts:
          - name: config-volume
            mountPath: /opt/scripts
      volumes:
        - name: config-volume
          configMap:
            name: {{ .Release.Name }}-postinstall-configmap
            defaultMode: 0777
      restartPolicy: Never
      terminationGracePeriodSeconds: 0