1、先看下整体目录架构[root@bogon ~]# cd /etc/ansible/[root@bogon ansible]# tree.├── ansible.cfg├── group_vars│   └── all├── hosts├── roles│   └── webservs│       ├── handlers│       │   └── main.yml│       ├── README.md│       ├── tasks│       │   ├── install_nginx.yaml│       │   └── main.yaml│       └── templates│           ├── index.html.j2│           └── nginx.conf.j2├── site.retry└── site.yaml6 directories, 11 files2、初始化一个role[root@bogon ~]# ansible-galaxy init /etc/ansible/roles/websrvs查看已经创建的role[root@bogon ~]# ls /etc/ansible/roles/webservs把初始化后， role里面没用的目录删除，没有的目录就创建，按照第一步的目录架构来3、配置ansible.cfg[root@bogon ansible]# cat ansible.cfg [defaults]inventory = /etc/ansible/hostssudo_user=rootremote_port=22host_key_checking=Falseremote_user=rootlog_path=/var/log/ansible.logmodule_name=commandprivate_key_file=/root/.ssh/id_rsa4、配置变量all文件，注意：名字只能写成all，写其他的就报错[root@bogon group_vars]# cat all---# vars file for /etc/ansible/roles/webservsworker_processes: 4worker_connections: 768max_open_files: 655065、配置site.yaml作为执行入口文件，里面定义都对哪些roles操作[root@bogon ansible]# cat site.yaml ---# this playbook deploy the whole application stack in this site- name: configuration and deploy webservers and application code  hosts: webservers    roles:    - webservs6、配置handlers文件 ，就是触发器，比如满足条件后启动nginx[root@bogon webservs]# cat handlers/main.yml ---# handlers file for /etc/ansible/roles/webservs- name: restart nginx  service: name=nginx state=restarted7、配置tasks， 这是具体执行操作的yaml文件[root@bogon webservs]# cat tasks/main.yaml ---- include: install_nginx.yaml[root@bogon webservs]# cat tasks/install_nginx.yaml ---# tasks file for /etc/ansible/roles/webservs- name: install nginx  command: yum install nginx -y- name: copy nginx config file  template: src=nginx.conf.j2 dest=/etc/nginx/nginx.conf  notify: restart nginx- name: copy index.html  template:    src: index.html.j2    dest: /usr/share/nginx/www/index.html    mode: 0644  notify: restart nginx- name: see file  command: ls /root  notify: restart nginx8、配置templates。  就是准备需要的模板文件，没有就不用准备[root@bogon webservs]# cat templates/nginx.conf.j2 worker_processes {
    { worker_processes }};worker_rlimit_nofile {
    { max_open_files }};events {    worker_connections {
    { worker_connections }};}http {    server {        listen       80;        root  /usr/share/nginx/www;        index index.html index.htm default.html index.php;        server_name loclhost;        location / {            try_files  / =404;        }    }    }[root@bogon webservs]# cat templates/index.html.j2             
nginx, confitured by ansible
  
if you can see this, ansible successfully installed nginx.
    
{
   { ansible_hostname }}
  9、执行部署[root@bogon ansible]# lsansible.cfg  group_vars  hosts  roles  site.retry  site.yaml[root@bogon ansible]# ansible-playbook site.yaml