Ansible playbook examples and techniques

Overview:

Some examples of Ansible playbook syntax, key value and techniques.

• # Example of execute other playbook:
  • – import_playbook: host_discovery.yml
  • – import_playbook: example.yml
• # Example execute task with Ansible role:
  • – import_tasks: host_discovery.yml
  • – import_tasks: example.yml
• # Example of initiate Ansible Role:
  • – name: Initiate Ansible Role: prac_role
    • tasks:
      • – include_role: name=prac_role
    • or
    • roles:
      • – prac_role
• # Example of Ansible playbook play and tasks:

• – – –
• – name: First Ansible play to run other tasks
• – become: true _{# when like to run the play with escalate privilege}
• – hosts: all
  • name: Ansible Playbook Examples
  • vars:
    • acct:
      • – testuser1
      • – testuser2
  • vars_prompt:
    • – name: example_tool_download _{# call it later with “when: example_tool_download | bool”}
      • prompt: “Download example-tool.zip from Apache server (yes/no)”
      • private: false
      • prompt: “Download example-tool.zip from Apache server (yes/no)”
      • private: false
    • – name: filePath _{# call the variable later with “{{ filePath }}”}
      • prompt: “Enter file path of the ISO”
      • privete: false
  • tasks:
    • – name: Simple PING test example
      • ping:
    • – name: Account Creation example
      • user:
        • name: “{{ item }}”
        • groups: wheel
        • password: “<generated_password_hash>”
      • loop: “{{ acct }}”
    • – name: Account verification
      • getent:
        • database: shadow
        • key: “{{ item }}”
      • loop: “{{ acct }}”
    • – name: Single Package Installation Example
      • yum: name=vsftpd state=present update_cache=true
    • – name: Multiple Packages Installation Example
      • become: true
      • yum:
        • name:
          • – httpd
          • – nginx
          • – vsftpd
        • state: present
        • update_cache: true
    • – name: Latest Package Updates Example
      • become: true
      • yum:
        • name: “*”
        • state: latest
    • – name: Register practice with command module
      • command: “id testuser”
      • register: acctInfo
    • – name: Find and copy with command example
      • command: “find /tmp -iname ‘example-tool.zip’ -exec cp -t $HOME {} +”
      • ignore_errors: true
    • – name: Outputs with line break example
      • vars:
        • msg: |
          • Distribution: {{ ansible_distribution }}
          • Release: {{ ansible_distribution_release }}
          • Distribution Version: {{ ansible_distribution_version }}
          • Kernel: {{ ansible_kernel }}
          • Architecture: {{ ansible_architecture }}
        • debug:
          • msg: “{{ msg.split(‘\n’) }}”
    • – name: Create local repo file
      • file:
        • path: /etc/yum.repos.d/local.repo
        • mode: “0644”
        • state: touch
    • – name: Modify local repo file created
      • copy:
        • dest: /etc/yum.repos.d/local.repo
        • content: |
          • [localbase]
          • name=Local Base
          • baseurl=http://x.x.x.10/rhel90/BaseOS
          • enabled=1
          • gpgcheck=1
          • gpgfile=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
          • [localapp]
          • name=Local AppStream
          • baseurl=http://x.x.x.10/rhel90/AppStream
          • enabled=1
          • gpgcheck=1
          • gpgfile=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
    • – name: Modify or replace line inf file
      • lineinfile:
        • create: true
        • state: present
        • mode: 0644
        • path: /etc/conf/examplefile
        • insertafter: ‘allow perm=any dir=/opt/targetdir/ : all’
        • line: ‘allow perm=any dir=/opt/example_dir : all’
    • – name: Unpack compressed file
      • unarchive:
        • src: “{{ansible_env.HOME}}/{{example_tool_zip_file}}”
        • dest: /opt
    • – name: Package up files
      • archive:
        • path: /opt/tartget_path/
        • dest: /dest/path/example.tar.gz
    • – name: File transfer
      • fetch:
        • src: local_system_file.tar.gz
        • dest: /remote_system/dest_path/dir