Ansible Playbook Exercises

https://www.devopsschool.com/blog/ansible-playbook-lab-excercise-part-2/

# inventory
[web]
13.232.181.124
35.154.128.2

[web:vars]
ansible_user=centos
ansible_ssh_private_key_file=node.pem
ansible_become=yes

#assignment.yaml
- name: Playbook Assignment
  hosts: web

  tasks:
  - name: Create group called deploy
    group:
      name: Deploy
      state: present
  - name: Create user in group with bin bash shell
    user:
      name: deploy-user
      shell=/bin/bash
      state: present
  - name: Install the latest version of Apache
    yum:
      name: httpd
      state: latest
  - name: Create file second in var/www/html
    file:
      path: /var/www/html/second.html
      state: file
  - name: Copy file with owner and permissions
    ansible.builtin.copy:
      src: index.html
      dest: /var/www/html/index.html
  - name: Start service httpd, if not started
    ansible.builtin.service:
      name: httpd
      state: started
  - name: Install the latest version of git and wget
    yum:
      name: git
      state: latest
    yum:
      name: wget
      state: latest

- name: Playbook Assignment
  hosts: localhost

  tasks:
  - name: Clone repository
    git:
      repo: 'https://github.com/scmgalaxy/ansible-role-template
      dest = /home/centos/ansible/sanchita
      clone: yes
  - name: Start service httpd, if not started
    reboot:

To run the playbook:

$ ansible-playbook -i inventory assignment.yaml

Playbook Variables

# playbook-variables.yaml
---
- name: Variable precedence
  hosts: localhost
  vars:
    myname: Sanchita
  vars_prompt:
    - name: "myname"
      prompt: "What is your name?"
      private: false
  vars_files:
    - ext-vars.yaml

  tasks:
  - name: Print the vars
    ansible.builtin.debug:
      msg: My name {{ myname }}
  - name: include default step variables
    include_vars: var-include.yaml
  - name: Print the vars
    ansible.builtin.debug:
      msg: My name {{ myname }}
  - name: Ansible register variable basic example
    shell: "find *.yaml"
    args:
      chdir: "/home/centos/ansible/sanchita"
    register: find_output
  - debug:
      var: find_output.stdout_lines[0]
  - name: Print the vars
    ansible.builtin.debug:
      msg: My name is  {{ myname }}

Precedence of Variables

• Command Line variable takes precedence over all other.
• Variables using task include takes precedence over all, except command line variable.
• External variables take precedence over variable prompt.
• Variable using prompt takes precedence over embedded variables.