Ansible中使用变量操作 会使我们操作方便很多，本次说下简单的变量用法

- hosts: docker    remote_user: root    vars:        nginx80: /usr/local/nginx/conf/vhost        nginx14:  https://nginx.org/download/nginx-1.14.2.tar.gz    tasks:     - command: ls nginx-1.14.2.tar.gz       register: result     - command: ls /usr/local/nginx/conf/vhost       register: han       ignore_errors: true     - name: wget nginx_url14.2       shell: wget https://nginx.org/download/nginx-1.14.2.tar.gz       when: result|failed     - name: mkdir nginx conf       shell: mkdir -p {
   { nginx80 }}       when: han|failed     - name: touch nginx config       file: path={
   { nginx80 }}/{
   { item }} mode=0644 state=touch       with_items:          - nginx80.conf          - nginx8080.conf

上面是定义的nginx配置文件目录和下载nginx1.14的压缩包，然后调用使用

你也可以换一种写法

vars:     -  nginx80: /usr/local/nginx/conf/vhost     -  nginx14:  https://nginx.org/download/nginx-1.14.2.tar.gz

你也可以在一个vars里面定义多个name

- hosts: docker      remote_user: root      vars:        nginx:          nginx80: /usr/local/nginx/conf/vhost1          nginx14:  https://nginx.org/download/nginx-1.14.2.tar.gz        wwwuser:          nginxuser: www       tasks:       - name: conf nginx         shell: wget {
   {nginx.nginx14 }}       - name: mkdir nginx80         shell: mkdir -p {
   {nginx.nginx80}}       - name: touch nginx config         file: path={
   { nginx.nginx80 }}/{
   { item }} mode=0644 state=touch         with_items:          - nginx_var.conf       - name: gourp www         group: name={
   { wwwuser['nginxuser']}} gid=3001       - name: useradd nginx user         user: name={
   { wwwuser.nginxuser }} group=www uid=3001 shell=/sbin/nologin

当我们定义多个vars的时候 有两种方式在写

A: {
   { nginx.nginx80 }}        B: { wwwuser['nginxuser']}}

引入变量

vars_files:        - /data/sh/vars_nginx.yml        -  /data/sh/vars_nginx_user.yml

例子

- hosts: docker      remote_user: root      vars_files:       - /data/sh/vars_nginx.yml       - /data/sh/vars_nginx_user.yml      tasks:       - name: conf nginx         shell: wget {
   {nginx.nginx14 }}       - name: mkdir nginx80         shell: mkdir -p {
   {nginx.nginx80}}       - name: touch nginx config         file: path={
   { nginx.nginx80 }}/{
   { item }} mode=0644 state=touch         with_items:          - nginx_var.conf       - name: gourp www         group: name={
   { wwwuser['nginxuser']}} gid=3001       - name: useradd nginx user         user: name={
   { wwwuser.nginxuser }} group=www uid=3001 shell=/sbin/nologin

交互式输入参数给与变量

- hosts: docker     remote_user: root     vars:      nginx:        nginx80: /usr/local/nginx/conf/vhost1        nginx14:  https://nginx.org/download/nginx-1.14.2.tar.gz      wwwuser:        nginxuser: www     vars_prompt:      - name: "user_name"        prompt: "Enter input name"        private: no      - name: "user_Password"        prompt: "Enter input password(md5之后的加密串)"         encrypt: "sha512_crypt"   #给与哈希加密   confirm实现密码确认功能 开启是需要数据两次密码        confirm: yes     tasks:      - name: create user        user: name="{
   {user_name}}" uid=3004 group=root  password="{
   {user_Password}}" shell=/bin/bash home=/home/{
   {user_name}}