register注册变量

可以将输出信息作为变量值

示例：

[[email protected] work]# cat register.yml

---

• hosts: PC

  remote_user: root

  tasks:

  • name: test shell

    shell: "echo test > /root/test"

    register: testvar ==================>将shell输出的结果赋值给testvar变量

  • name: shell return

    debug:

    var: testvar ======>debug调用testvar

    msg: "{{testvar.end}}" ==============>debug调用testvar的内部的参数

vars_prompt 提示用户输入信息，并写入变量

name变量的名称

prompt 提示用户输入信息

encrypt: "sha512_crypt"使用sha512哈希算法，对字符串哈希，主要用于创建密码

confirm 提示用户再次提交

private是否隐藏用户输入的信息，默认yes，no不隐藏

示例（创建用户）：

[[email protected] work]# cat c_user_pass.yml

---

• hosts: PA

  remote_user: root

  vars_prompt:

  • name: "user"

    prompt: "Please input your create user name"

    private: no

  • name: "pass"

    prompt: "Please input your password"

    encrypt: "sha512_crypt"

    confirm: yes

    tasks:

  • name: add user

    user:

    name: "{{user}}"

    password: "{{pass}}"

命令行传入变量

--extra-vars 简写 -e 适用与ansible ansible-playbook

传入单个变量值：ansible-playbook var.yml -e 'var1="jack"'

传入多个变量值：ansible-paybook var.yml -e 'var1="jack" var2="ross"' （空格隔开，否则会报错）

传入变量列表：ansible-playbook var.yml -e '{"var_list":["var1","var2","var3",]}'

传入变量文件：ansible-playbook var.yml -e '@/etc/ansible/vars/hero.yml'

示例：

[[email protected] work]# vim var.yml

---

• hosts: PC

  remote_user: root

  vars:

  cmd_var1: This is a default var1

  cmd_var2: This is a default var2

  name_list: ["jack","ross","wolf","captain"]

  tasks:

  • name: "var on command line"

    debug:

    msg: "{{cmd_var1}},{{cmd_var2}},{{name_list[2]}}"

  • name: "var in file"

    debug:

    msg: I am {{hero_list[2]}}

变量有默认值的情况下，命令行传入的变量值优先级更高

变量文件：

[[email protected] work]# cat ../vars/hero.yml

#This is a hero list

hero_list:

• spander-man
• iron-man
• captain-Amarican
• doctor
• worlf
• sour