Ansible Playbook when statement added in playbook

[DEEPANSHU DANG]

Hi Team

I have created a Playbook for helm deployment and need to make resiliency and exception handling with the help of when condition I got confused in that when adding multiple conditions can any one please help.

```

---

#Header Section

- name: This playbook will deploy the kafka service in Cluster

  hosts: host

  gather_facts: true

  vars:

     helm_chart_url: "https://charts.bitnami.com/bitnami"

     pv_file: ~/yamls/kafka/persistent_volume_kafka.yml

     release_name: kafka

     namespace: default

     values_files: ~/yamls/kafka/

     helm_chart_name: bitnami    

#Task Section

  tasks:

  - name: Checking bitnami repo

    ansible.builtin.shell: helm repo list | grep -i "bitnami" | awk '{print $1}'

    register: repo_result

    failed_when: # repo already exit if not exsit next task perform to add it

    ignore_errors: yes

  - name: Add helm bitnami/kafka repo

    kubernetes.core.helm_repository:

     name: bitnami

     repo_state: present

     repo_url: "{{ helm_chart_url }}"

    when: # If first task failed this task will add repo

     

  - name: Updating helm bitnami/kafka repo

    ansible.builtin.command: helm repo update {{helm_chart_name}}

    register: result_repo

  - name: Output of updating helm repo

    debug:

      var: result_repo.stdout

 - name: Create a persistence Volume by reading the definition from a local file

    kubernetes.core.k8s:

     state: present

     src: "{{pv_file}}"

     namespace: "{{namespace}}"

     wait: yes

  - name: listing helm {{release_name}} release

    shell: helm ls | grep -i {{release_name}} | awk '{print $1}'

    ignore_errors: true

    register: result

    failed_when: '"release_name" not in result.stdout' or # if already release not available will install it if available skip the task

  - debug:

       var: result.stdout

     

  - name: Deploy Kafka chart using values files

    command: helm install {{release_name}} -f values.yaml bitnami/kafka

    args:

      chdir: "{{values_files}}"

    when: '"{{release_name}}" not in result.stdout'  # This task perform if pervisious task not found any release

    register: command_output

 

  - name: Output of the Helm kafka release

    debug:

      var: command_output.stdout_lines

    when: #This task will run when pervisious task execute well

    # and the output is coming in list if we can filter the release

   

    #command_output.stdout_lines[0]["NAME"]=="kafka"

   

  - debug:

      var: command_output.stdout_lines[0]

  - name: Checking helm {{release_name}} release

    shell: helm ls | grep -i {{release_name}} | awk '{print $1}'

    register: result

  - debug:

      msg: "In Helm '{{result.stdout}}' release available"

    when: 'result.stdout != "release_name"'

------------

I have mention comments where we need to add the when conditions

task1: checking bitnami chart is added or not if not added task will failed Task2: will based on the task one if failed this task will add the repo or skip it task3: updating the help repo task4: creating persistence volume task5 list helm chart if release available task skip task6: will deploy if prevision task could not find release