---
- hosts: gale
  remote_user: root
  gather_facts: no

  tasks:
    - name: install packages
      yum: name=libaio,perl
    - {name: create group, group: name=mysql system=yes gid=306}
    - name: create user
      user: name=mysql system=yes group=mysql shell=/sbin/nologin home=/data/mysql uid=306 create_home=no
    - name: unarchive mysql
      unarchive: src=/data/files/mysql-5.6.46.tar.gz dest=/usr/local owner=mysql group=mysql
    - name: make link
      file: src=/usr/local/mysql-5.6.46 dest=/usr/local/mysql state=link
    - name: create data dir
      shell: chdir=/usr/local/mysql mysqld --initialize-insecure --datadir=/data/mysql --user=mysql
      tags: data
    - name: copy my.cnf
      copy: src=/data/my.cnf dest=/etc/my.cnf
    - name: enable service
      shell: systemctl start mysqld;systemctl enable mysql
      tags: service
    - name: config PATH
      copy: content=PATH=/usr/local/mysql/bin:$PATH dest=/etc/profile.d/mysql.sh
    - name: script
      script: /data/init.sh
      tags: script

---
- hosts: web-server
  remote_user: root

  tasks:
    - name: install httpd
      yum: name=httpd state=present
    - name: copy config files
      copy: src=/config/httpd.conf dest=/etc/httpd/conf/
      notify: 
        - restart httpd
        - check httpd process
    - name: config service
      service: name=httpd state=started enabled=yes
    
  handlers:
    - name: restart httpd
      service: name=httpd state=restarted
    - name: check httpd process
      shell: killall -0 httpd &> /tmp/httpd.log
...      

环境变量

- hosts: gale
  remote_user: root
  vars:
    - ip: "{{ ansible_default_ipv4['address'] }}"
    - username: user1
    - groupname: group1
    - filename: bbb  # ansible-playbook -e has great priority
  vars_files:
    - vars.yaml

  tasks:
    - name: create log file
      file: path=/dd/{{ ansible_nodename }}.log state=touch owner=rabid group=rabid mode=7000
    - name: create log file
      file: path=/dd/{{ ip }}.log state=directory
    - name: create group
      group: name={{ groupname }} state=present
    - name: create user
      user: name={{ username }} state=present
    - name: create file
      file: path=/data/{{ filename }} state=touch
    - name: create file
      file: path=/mnt/{{ a }} state=directory
    - name: create file
      file: path=/mnt/{{ b }} state=touch

---
a: aaa
b: bbb
...

 template

---
- hosts: gale
  remote_user: root

  tasks:
    - name: install nginx
      yum: name=nginx state=present
    - name: actualize nginx template
      template: src=nginx.conf.j2 dest=/etc/nginx/nginx.conf
      notify: reset service
    - name: config nginx service
      service: name=nginx state=started enabled=yes
  handlers:
    - name: reset service
      service: name=nginx state=restarted

 
for

---
- hosts: gale
  remote_user: root
  gather_facts: no
  vars:
    - vhosts:
        - listen: 80
          server_name: bb.io
        - listen: 8080
          server_name: pp.io

  tasks:
    - name: actualize nginx template
      template: src=nginx.conf.j2 dest=/mnt/nginx.conf

 
template:

 yaml

---
- hosts: gale
  remote_user: root
  gather_facts: no
  vars:
    - ports: [ 80, 81, 82]

  tasks:
    - name: actualize nginx template
      template: src=nginx.conf.j2 dest=/mnt/nginx.conf

条件判断

---
- hosts: gale
  remote_user: root
  gather_facts: no
  vars:
    - vhosts:
        - web1:
          listen: 81
          root: /var/www/nginx/web1
        - web2:
          listen: 82
          server_name: web2.b.io
          root: /var/www/nginx/web2
        - web3:
          listen: 83
          server_name: web3.b.io
          root: /var/www/nginx/web3

  tasks:
    - name: actualize nginx template
      template: src=nginx.conf.j2 dest=/mnt/nginx.conf

条件测试

---
- hosts: gale2:u1
  remote_user: root

  tasks:
    - name: shutdown RedHat flavored systems
      command: shutdown -h now
      when: ansible_os_family == 'RedHat'

　　
根据ip地址筛选

---
- hosts: gale2:u1
  remote_user: root

  tasks:
    - name: orient copy files
      copy: src=/etc/rpc dest=/opt
      when: "ansible_default_ipv4['address'] == '192.168.8.12'"

with_items

---
- hosts: gale
  remote_user: root

  tasks:
    - name: augment group
      group: name={{ item }} state=present
      with_items:
        - nginx
        - mysql
        - apache
    - name: augment user
      user: name={{ item.user }} state=present groups=wheel
      with_items:
        - user: augment1
        - user: augment2
    - name: augment user
      user: name={{ item.user }} group={{ item.group }} state=present
      with_items:
        - {name: nginx, group: nginx}
        - {name: mysql, group: mysql}
        - {name: apache, group: apache}

 roles

---
- hosts: all
  remote_user: root

  roles:
    - {role: nginx, username: nginx, when: ansible_distribution_major_version == '7'}
---
- hosts: all
  remote_user: root

  roles:
    - {role: nginx, tags: [nginx, web], when: ansible_distribution_major_version == '6'}
    - {role: httpd, tags: [httpd, web]}
    - {role: mysql, tags: [mysql, db]}
    - {role: mariadb, tags: [mariadb, db]}

ansible-playbook --tags=nginx,httpd,mysql nginx-role.yaml

- hosts: gale
  remote_user: root
  
  roles:
    - {role: httpd, tags: [httpd, web], when: ansible_distribution_major_version == '7'}
    - {role: nginx, tags: [nginx, web], when: ansible_distribution_major_version == '8'}