ansible剧本playbook

Palybook组层部分

- name: first play
#一个name就是一个任务名，名字可以不写，
  gather_facts: false
#是否收集目标主机的系统信息，false就是不收集,最好不写。
  hosts: 192.168.233.12
#执行的目标主机
  remote_user: root
#在目标主机执行的用户
  tasks:
   - name: ping test
     ping:
   - name: close selinux
     command: '/sbin/setenforce 0'
     ignore_errors: True
   - name: close firewalld
     service: name=firewalld state=stopped
   - name: install httpd
     yum: name=httpd
   - name: start httpd
     service: enabled=true name=httpd state=started
   - name: editon index.html
     shell: echo "this is httpd" > /var/www/html/index.html
     notify: restart httpd
  handlers:
   - name: restart httpd
     service: name=httpd state=restarted

[root@docker1 opt]# ansible-playbook test1.yaml --syntax-check
#检查配置文件是否有错误
[root@docker1 opt]# ansible-playbook test1.yaml --list-task
#检查生效的目标主机
[root@docker1 opt]# ansible-playbook test1.yaml
#运行剧本文件
[root@docker1 opt]# ansible-playbook test1.yaml --start-at-task='install httpd'
#指定运行剧本第几行

如需要切换用户在配置文件中写入
remote_user: dn
become: yes
become_ser: root
vim /etc/ansible/ansible.cfg
71行取消注释
vim /etc/ansible/hosts
[dbservers]
192.168.233.12 ansible_user=root ansible_password=123
需要声明ip地址与主机名

ansible-playbook test1.yaml -u root -k
#密码需要手动输入

- hosts: 192.168.233.12
  remote_user: root
  vars:
    groupname: guoqi
    username: wangdefu
  tasks:
    - name: create group
      group:
        name: "{{ groupname }}"
        system: yes
        gid: 111
    - name: create user
      user:
        name: "{{ username }}"
        uid: 1011
        group: "{{ groupname }}"
        shell: /sbin/nologin
    - name: copy file
      copy:
        content: "{{ hostvars[inventory_hostname]['ansible_default_ipv4']['address']}}"
        dest: /opt/ky32.txt
#获取目标主机的ip地址，然后打印出来，这里是否获取主机的信息否被删除掉，如果无法获取主机的信息，就会报错
[root@docker1 opt]# ansible-playbook test2.yaml -e 'username=yst groupname=ymr'
#在外面传参

playbook的条件判断
when是一个比较常见的应用场景，实现满足条件即执行，不满足条件即跳过的任务
when是满足条件即执行，不满足不执行

格式
- hosts: 192.168.233.12
#可以用主机的ip地址，也可以是用组名，也可以用all
  remote_user: root
  tasks:
   - name: test when
     debug:
       msg: '位置判断'
     when: ansible_default_ipv4.address == '192.168.233.20'
    #when: inventory_hostname !== '192.168.233.20'
#作用相同
#debug=echo  msg=输出的内容，用于脚本的调试，在正式脚本中可以去除