linux--ansible(playbook5 变量2)

register

保存shell命令输出结果到一个变量中去

---
- hosts: testB
  remote_user: root
  tasks:
  - name: test shell
    shell: "echo test > /var/testshellfile"
    register: testvar                        注册定义变量
  - name: shell module return values
    debug:
      var: testvar               必须为var

获取键值对

---
- hosts: testB
  remote_user: root
  tasks:
  - name: test shell
    shell: "echo test > /var/testshellfile"
    register: testvar
  - name: shell module return values
    debug:
      msg: "{{testvar.cmd}}"

---
- hosts: testB
  remote_user: root
  tasks:
  - name: test shell
    shell: "echo test > /var/testshellfile"
    register: testvar
  - name: shell module return values
    debug:
      msg: "{{testvar['cmd']}}"

vars_prompt

获取用户交互信息

---
- hosts: testB
  remote_user: root
  vars_prompt:
    - name: "your_name"             第一个变量
      prompt: "What is your name?"  提示输入信息 输入后存到变量里面
    - name: "your_age"              第二个变量
      prompt: "How old are you?"
  tasks:
    - name: output values
      debug:
        msg: Your name is {{your_name}},you are {{your_age}} years old.

让输入回显

---
- hosts: testB
  remote_user: root
  vars_prompt:
    - name: "your_name"
      prompt: "What is your name?"
      private: no                 非私有，可以看到
    - name: "your_age"
      prompt: "How old are you?"
      private: no
  tasks:
    - name: output values
      debug:
        msg: Your name is {{your_name}},you are {{your_age}} years old.

设置默认值

---
- hosts: testB
  remote_user: root
  vars_prompt:
    - name: "solution"
      prompt: "Choose the solution you want \n
      A: apple\n
      B: banana\n
      C: orige\n"
      private: no
      default: A
  tasks:
    - name: output vars
      debug:
        msg: Thi final solution is {{solution}}

默认选A

选择B

创建一个用户，并加入密码

---
- hosts: testB
  remote_user: root
  vars_prompt:
    - name: "user"
      prompt: "useradd"
      private: no
    - name: "password"
      prompt: "passwordadd"
      private: no
  tasks:
    - name: useradd
      user:
        name: "{{user}}"
        password: "{{password}}"

上述还存在一个问题就是在playbook里面无法解决password加密问题

为了解决 进行如下操作

在ansible端

yum install wget -y
wget https://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz

tar zxf setuptools-0.6c11.tar.gz
tar zxf pip-20.0.2.tar.gz
cd pip-20.0.2
python setup.py install
pip install passlib

在上面这个库的支持下，可以有sha1加密

---
- hosts: testB
  remote_user: root
  vars_prompt:
    - name: "hash_string"
      prompt: "Enter something"
      private: no
      encrypt: "sha512_crypt"         加密
  tasks:
    - name: output the string after hash
      debug:
        msg: "{{hash_string}}"

完善给用户密码的playbook

---
- hosts: testB
  remote_user: root
  vars_prompt:
    - name: "user"
      prompt: "useradd"
      private: no
    - name: "password"
      prompt: "passwordadd"
      encrypt: "sha512_crypt"
  tasks:
    - name: useradd
      user:
        name: "{{user}}"
        password: "{{password}}"

重复输入密码

---
- hosts: testB
  remote_user: root
  vars_prompt:
    - name: "user"
      prompt: "useradd"
      private: no
    - name: "password"
      prompt: "passwordadd"
      encrypt: "sha512_crypt"
      confirm: yes                 重复
  tasks:
    - name: useradd
      user:
        name: "{{user}}"
        password: "{{password}}"