ansible中变量的使用

[root@m01 /etc/ansible]# cat 01-var.yml 
---
  - hosts: all
    vars:
      ip: 10.0.0.200
    tasks:
    - name: mkdir 
      file: 
        path: /oldboy/{{ ip }}
        state: directory

在nfs01 backup 创建/backup/lidao的目录 把 /etc/目录打包压缩到/backup/lidao目录下面 etc.tar.gz
目录名存放在变量中
```
dir=/backup/lidao
mkdir -p /backup/lidao
tar zcf /backup/lidao/xxx.tar.gz /etc

---

• hosts: all
  vars:
  dir: /backup/lidao
  tasks:
  • name: mkdir
    file:
    path: "{{dir}}"
    state: directory
  • name: tar
    archive:
    path: /etc
    dest: "{{dir}}/etc.tar.gz "

ip=hostname -I|awk '{print $NF}'

[root@m01 /etc/ansible]# cat 03-var-reg.yml

• hosts: all
  tasks:
  • name: ip
    shell: hostname -I|awk '{print $NF}'
    register: ipaddr
  • name: print ip
    shell: echo {{ipaddr}}>/tmp/ip.txt
    [root@m01 /etc/ansible]#
    ipaddr变量的内容
    [root@nfs01 ~]# cat /tmp/ip.txt
    {stderr_lines: []
    uchanged: True
    uend: u2019-05-31 11:24:45.080356
    failed: False
    ustdout: u172.16.1.31,
    ucmd: uhostname -I|awk '{print }',
    urc: 0,
    ustart: u2019-05-31 11:24:45.073817,
    ustderr: u,
    udelta: u0:00:00.006539,
    stdout_lines: [u172.16.1.31]
    }

stderr standard error
stdout standard output 标准输出

ansible 调试功能
debug 调试
[root@m01 /etc/ansible]# cat 03-var-reg.yml

---

• hosts: all
  tasks:
  • name: ip
    shell: hostname -I|awk '{print $NF}'
    register: ipaddr
  • name: debug ipaddr
    debug: msg={{ipaddr.stdout}}

[root@m01 /etc/ansible]# cat 04-var-reg-tar.yml

• hosts: all
  tasks:

  • name: ip
    shell: hostname -I|awk '{print $NF}'
    register: ipaddr

  • name: date
    shell: date +%F
    register: time

  • name: mkdir dir
    file:
    path: /backup/{{ipaddr.stdout}}
    state: directory

  • name: tar
    archive:
    path: /etc
    dest: /backup/{{ipaddr.stdout}}/etc-{{time.stdout}}.tar.gz

          
    ```   
[root@manager ~]# cat f7.yml
---
- hosts: all
  remote_user: root
  tasks:
    - name: Installed Pkg
      yum: name={{ item }} state=present
      with_items:
        - wget
        - tree
        - lrzsz
              
for item  in  wget tree lrzsz 
do 
     yum install -y  $item 
done          
          
          
---
- hosts: all
  remote_user: root
  tasks:
    - name: Installed Pkg
      yum: name={{ item }} state=present
      with_items:
        - wget
        - tree
        - lrzsz
    ```   
    ```   
[root@manager ~]# cat f7.yml
- hosts: all
  remote_user: root
  tasks:
    - name: Add Users
      user: name={{ item.name }} groups={{ item.groups }} state=present
      with_items:
        - { name: 'testuser1', groups: 'bin' }
        - { name: 'testuser2', groups: 'root' }