Create your first MastJob (Hello World)

This is the time when you should create your first MastJob. So yes, this is beloved 'Hello World'.

Before you get dirty with code, remember to install mast in your cluster and set your current namespace to mast

First things firsts, all actions on cluster at the very end are executed by Ansible. You need to create a playbook to print our 'Hello world' message.

The playbook looks like this:

playbook.yaml

- hosts: localhost
    tasks:

        - name: Hello from ansible inside your cluster
            debug:
            msg: "Hello world"

To make this playbook possible to use in cluster, you have to add it as a ConfigMap.

playbook-configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
    name: hello-world-playbook
data:
    playbook.yaml: |
        - hosts: localhost
          tasks:

            - name: Hello from ansible inside your cluster
              debug:
                msg: "Hello there"

Now is the time to write your first MastJob.

hello-world-mastjob.yaml

apiVersion: mast.ansi.services/v1
kind: MastJob
metadata:
  name: hello-world
  namespace: mast
spec:
  ansible:
    version: latest
  configuration: # 
    playbook:    # 
      - fromConfigMap:  # 
          name: hello-world-playbook
          key: playbook.yaml

Add your MastJob to cluster with mast CLI or kubectl.

The last step is to run this MastJob. You can do it with Mast CLI

mast job run hello-world

Or by submitting MastRun file with kubectl:

hello-world-mastrun.yaml

apiVersion: mast.ansi.services/v1
kind: MastRun
metadata:
  name: helo-world
  namespace: mast
spec:
  mastJobRef:
    name: hello-world

Use mast run list to check wheather MastRun is being executed and mast run logs to see your message.