ansible变量的定义

左手的ㄟ右手 2021-12-14 02:19 377阅读 0赞

1 vars定义变量

[root@wyl01 ansible1]# cat test.yml 
    ---
    - hosts: web
      vars:
        - wyl_name: "wyl123"   #前面的-也可以不加
        - phone: 18255109527
    
      tasks:
       - name: add content
         copy:
           content: "{
       {wyl_name}}"
           dest: /wyl/ansible1/a.txt

2  vars\_files 方式

[root@wyl01 ansible1]# cat variables 
    wyl_name: wyl
    http_port: 80
    
    # 案例一
    [root@wyl01 ansible1]# cat test.yml 
    ---
    - hosts: web
      vars_files:
        - variables
    
      tasks:
       - name: add content
         copy:
           content: "{
       {http_port}}"
           dest: /wyl/ansible1/b.txt
    
    # 案例二
    [root@wyl01 ansible1]# cat test.yml 
    ---
    - hosts: web
      vars_files:
        - variables
    
      tasks:
       - name: add content
         template:
           src: /wyl/ansible1/b.txt
           dest: /wyl/ansible1/c.txt
    
    [root@wyl01 ansible1]# cat b.txt 
    {
       {wyl_name}}
    {
       {http_port}}
    
    [root@wyl01 ansible1]# cat c.txt 
    wyl
    80

上例中使用"var\_files"关键字引入了对应的变量文件，然后使用了文件中定义的变量。当然也可以引用多个变量文件，每个被引入的文件都需要以“-”开头。“var”关键字和“var\_files”关键字可以同时使用，如下：

var:
    - wyl_name: "wyl9527"
    vars_files:
    - variables

3 vars\_prompt交互式定义变量

[root@wyl01 ansible1]# cat c.txt
    {
       {http_port}}
    
    [root@wyl01 ansible1]# cat test.yml
    
    ---
    - hosts: web
      vars_prompt:
        - name: http_port
          prommpt: 'http_port='
          private: no     # no为明文, yes为暗文
    
      tasks:
       - name: add content
         template:
           src: /wyl/ansible1/c.txt
           dest: /wyl/ansible1/c.txt
    
    
    
    [root@wyl01 ansible1]# ansible-playbook test.yml 
    http_port: 80
    
    PLAY [web] *************************************************************************************************************
    
    TASK [Gathering Facts] *************************************************************************************************
    ok: [192.168.52.128]
    
    TASK [add content] *****************************************************************************************************
    changed: [192.168.52.128]
    
    PLAY RECAP *************************************************************************************************************
    192.168.52.128             : ok=2    changed=1    unreachable=0    failed=0   
    
    [root@wyl01 ansible1]# cat c.txt 
    80

4 主机清单中定义变量

[root@wyl01 ansible1]# vim /etc/ansible/hosts 
    
    [web]
    192.168.52.128
    
    # 定义变量
    [web:vars]
    wyl_name = wyl9527
    http_port = 8080
    
    
    [root@wyl01 ansible1]# vim test.yml
    - hosts: web
    
      tasks:
       - name: add content
         template:
           src: /wyl/ansible1/c.txt
           dest: /wyl/ansible1/d.txt
    
    
    [root@wyl01 ansible1]# cat c.txt 
    {
       {wyl_name}}
    {
       {http_port}}
    
    
    [root@wyl01 ansible1]# ansible-playbook test.yml 
    
    PLAY [web] *************************************************************************************************************
    
    TASK [Gathering Facts] *************************************************************************************************
    ok: [192.168.52.128]
    
    TASK [add content] *****************************************************************************************************
    changed: [192.168.52.128]
    
    PLAY RECAP *************************************************************************************************************
    192.168.52.128             : ok=2    changed=1    unreachable=0    failed=0

5 register获取变量

playbook中tasks之间相互传递变量

[root@wyl01 auto]# cat register.yml 
    ---
    - hosts: all
      gather_facts: no
      tasks: 
        - name: display register vars
          shell: hostname
          register: info
        - name: dispaly info
          debug: msg="{
       {info}}"

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