Ansible - mwicat/personal GitHub Wiki

https://ansible-docs.readthedocs.io/zh/stable-2.0/rst/playbooks_best_practices.html https://docs.ansible.com/ansible/latest/modules/list_of_all_modules.html

Special magic variables

https://docs.ansible.com/ansible/latest/reference_appendices/special_variables.html

Limit to group of hosts

ansible-playbook site.yml --limit webservers

or

ansible-playbook webservers.yml

Install collection

ansible-galaxy collection install mysql.mysql_user

List hosts in inventory

ansible -i inventories/test/ all --list-hosts

Use test inventory

ansible-playbook -i inventories/test site.yml --tags ntp --limit webservers

Dry-run

ansible-playbook -i inventories/production site.yml --limit host1,host2 --check

Debug

ansible-playbook --check -i inventories/production site.yml -vvvv

Limit to hosts

ansible-playbook -i inventories/production site.yml --limit host1,host2

List hosts

ansible-inventory --list

Run command on host

ansible -i inventories/test myhost -a ls

ansible localhost -a 'uname'

Inline

ansible localhost --become -m apt -a 'pkg=htop state=present'

Playbook

---
- hosts: localhost
  tasks:
   - name: Install htop
     apt: pkg=htop state=present

ansible-playbook --become playbook.yml --check

ansible-playbook --become playbook.yml

Debug playbook

- hosts: all
  tasks:
    - debug:
        msg: task1

Run specific task

ansible-playbook --become playbook.yml --step --start-at-task=taskname

Galaxy install role

ansible-galaxy install geerlingguy.apache,v1.0.0

ansible-galaxy list

Copy file

- name: Copy mysql release package
  copy:
    src: mysql-apt-config_0.8.13-1_all.deb
    dest: /root/mysql-apt-config.deb

Install packages

- name: ensure packages are installed
  package:
    name: "{{ item }}"
  with_items:
    - mysql-server

Copy directory

- name: Copy conf.d
  copy:
    src: '{{ item }}'
    dest: /etc/apache2/conf.d
    owner: root
    group: root
    mode: u=rwX,g=r,o=r
  tags:
    config
  with_fileglob:
    - conf.d/*

Add line to file

    - lineinfile:
        path: /etc/hosts
        regexp: '^192\.168\.0\.3'
        line: '192.168.0.3 myhost'
        owner: root
        group: root
        mode: 0644
      when: project_environment == "development"

Create directory tree

- name: Create /dir tree
  file:
    path: "{{ item }}"
    state: directory
  with_items:
    - /dir
    - /dir/dir1
    - /dir/dir2

User role with vars

---
- hosts: all
  roles:
    - percona-server-tools
  vars:
    percona_server_tools_reset_root_password:
      run: true
      root_password: 'rootpass'

Install ansible apt integration

ansible -i inventories/test/ yourhost -m apt