ansible

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ansible 

安装  卸载
yum  -y install  ansible 
yum  remove  ansibel    

命令集
ansible  
ansible-config
ansible-doc 
ansible-galaxy
ansible-inventory
ansible-playbook

重要文件
/etc/ansible/ansible.cfg 
/etc/ansible/hosts
/etc/ansible/roles


inventory 配置
ansible  all --list   
vim   /etc/ansible/hosts 
192.168.36.1 
teset1    ansible_host=   ansible_port=  
[apache]
httpd1.cnedu.com    ansible_host=
httpd2.cn.com
[nginx]       
ngx1.cndu.com
ngx2.cndu.com
[webservers:children] 
apache
nginx
[webservers:vars]
ntp_server=ntp.cndu.com
ansible_ssh_user=root


简单playbook 
---
- hosts:
  remote_user:root
  tasks:
  - name:  name
    yum:  
  - name: 
    copy: 
    notify:
    - restart ll
  - name:
    service:
  handles:
    - name:  restart  
      service:



   ansibles  结构目录：
-------roles 
|  |-------docker    
|  |     |---defaults   默认变量
|  |     |---files      普通文件
|  |     |    |---daemon.josn
|  |     |---handles
|  |     |---meta
|  |     |---tasks
|  |     |    |---main.yml
|  |     |---templates
|  |     |---vars        其他变量
|  |-------mariadb
|  |     |_____tasks
|  |     |     |____main.yml
|  |-------mongo
|  |     |-----tasks
|  |           |---main.yml
|-------site.yml

roles剧本
site.yml
---
- hosts: server
  roles：
   - docker
   - {role:mongo,port:xxx}


roles/docker/tasks/main.yml
- name:xxxx
  yum:
- name:xxx
  copy:
  notify:
    - restart xxx
- name:
  service:


roles/docker/handles/main.yml
- name: restart 
  service: xx



定义变量：
inventory中定义：   
example.com   http_port=80
playbookz中定义
---
- hosts: 192.168.36.1
  vars:
    port:
  roles:
    - docker 
    - mongo 
在role中定义
---
- hosts:   192.168.35.3
  roles:
    - docker
    - { role:mongo,port:2222}


系统信息变量：
ansible  hostname  -m setup 
属性   {{ ansible_hostname }}
层级属性  {{ ansible_devices.vda.size }}
属组     {{  ansible_dns.nameservers[0] }}

使用变量
- name: 
  docker:
     name: mongo
     image: mongo:latest
     state: started
     ports:
     - "{{ port }}"

模板 

{
	
	{{  mirror_url}}
}


使用
- name:
  template: src=daemon.json.j2   dest=/etc/docker/daemon.json
  notify: 
  - restart

  注册变量

  循环 loops
  -name: add serveral  users
   user: 
      name: "{{ item }}"
    # name: "{{ item.name }}"
      state: present
      groups: "wheel"
    # groups: "{{ item.groups }}"
   loop: 
    - testuser1
    - testuser2
    - {name:'xx',groups:'wheel'}
    - {name:'xx',groups:'wheel'}

 条件判断
 tasks:
  - name: shutdown 
    command:  /sbin/shutdown    -t now
    when: ansible_os_famliy ==  ""
  - name: xxx
    command:    
    when:             or 


and  
 tasks:
  - name: shutdown 
    command:  /sbin/shutdown    -t now
    when: 
     - ansible_distribution == "centos"
     - ansible_distribution_major_version ==""


block