ansbile-playbook 常用操作

ansible-playbook 模板

• 执行模板

- name: use vars define variables
  hosts: 192.168.64.124
  tasks:
    - name: add line before Listen 80
      lineinfile:
        dest: /etc/hosts
        line: '192.168.200.8 test.com'

• 套一个文件内部变量的模板

[root@localhost mysql]# cat test_services.yaml 
test_services:
 - httpd
 - mariadb


[root@localhost mysql]# cat install_pkgs.yaml 
- name: feile hosts
 hosts: 192.168.64.124
 vars_files:
   - test_services.yaml
 tasks:
   - name: start services group
     service:
       name: "{{ item }}"
       state: started
     loop: "{{ test_services }}"

• yum 和启动 以及更新包

[root@localhost mysql]# cat s7.yaml 
---
- name: Install vim
  hosts: webservers
  vars: 
    packeages:
    - lrzsz
  tasks:
    - name: install yum packeage
      yum:
        name: "*"
        state: latest
        #update_cache: yes
    - name: Instal Packages
      yum:
        name: "{{ packeages }}"
        state: latest
        #update_cache: yes
    - name: httpd httpd start
      service:
        name: httpd
        state: restarted
        enabled: yes

• 替换行内文字

[root@localhost mysql]# cat s5.yaml 
- name: use vars define variables
  hosts: 192.168.64.124
  tasks:
    - name: add line before Listen 80
      lineinfile:
        dest: /etc/hosts
        line: '192.168.200.8 test.com'
[root@localhost mysql]# cat s4.yaml 
- name: use vars define variables
  hosts: 192.168.64.124
  tasks:
    - name: add line before Listen 80
      lineinfile:
        dest: /etc/hosts
        regex: '^192.168.200'
        state: absent

• 判断路径

[root@localhost mysql]# cat if_test.yaml
- hosts: webservers
  vars:
    testpath: /home
  tasks:
    - debug: 
        msg: "file exist"
      when:  testpath is exists # 路径存在
      #when: not testpath is exists # 路径不存在

• 判断结果返回

sucess或succeeded：通过任务执行结果返回的信息判断任务的执行状态，任务执行成功则返回true
failure或failed：任务执行失败则返回true
change或changed：任务执行状态为changed则返回true
skip或skipped：任务被跳过则返回true

[root@localhost mysql]# cat s8.yaml 
- hosts: webservers
  gather_facts: no 
  vars: 
    doshell: true
  tasks:
    - shell: 'cat /tmp/text.txt'
      when: doshell
      register: result
      ignore_errors: true
    - debug:
        msg: "success"
      when: result is success
    - debug: 
        msg: "failed"
      when: result is failure
    - debug:
        msg: "changed"
      when: result is change
    - debug:
        msg: "skip"
      when: result is skip