前面介绍了PlayBook怎么写服务部署，把服务部署上后，我们来用Ansible来部署项目，实现一套完整的LNMP架构。我们部署wordpress、wecenter、phpshe、phpmyadmin这四个项目。将其所有的剧本都写入lnmp.yml中，相关备份数据都放入root/ansible/lnmp中，最终实现一个剧本一条命令部署4个项目的效果，话不多说，直接开始！

1、准备工作

2、写剧本

1、将目标主机添加至主机列表

[root@Ansible ~]# cat /etc/ansible/hosts
[lb_group]
lb01 ansible_ssh_host=10.0.0.5
lb02 ansible_ssh_host=10.0.0.6

[web_group]
web01 ansible_ssh_host=10.0.0.7
web02 ansible_ssh_host=10.0.0.8

[nfs_group]
nfs ansible_ssh_host=10.0.0.31

[mysql_group]
mysql ansible_ssh_host=10.0.0.51

[nginx_install_group:children]
lb_group
web_group

2、创建剧本存放目录并收集部署项目所需要的资源

我的思路是针对服务器的功能去进行项目资源的收集

[root@Ansible ~]# mkdir ansible/lnmp

#1、在lb01上部署七层负载，我们需要nginx.conf（方便区分可以命名为nginx_lb01.conf）、nginx_7.conf（七层负载配置）、证书、keepalived.conf、proxy_params

[root@LB01 conf.d]# scp /etc/nginx/nginx.conf /etc/nginx/conf.d/proxy_7.conf /etc/nginx/proxy_params /etc/nginx/ssl_key/ /etc/keepalived/keepalived.conf 10.0.0.61:/root/ansible/lnmp

[root@Ansible lnmp]# mv keepalived.conf keepalived_lb01.conf 
[root@Ansible lnmp]# mv nginx.conf nginx_lb01.conf

#2、lb02与lb01所需文件大致相同，我们将keepalived.conf拷贝至管理机即可
[root@LB01 ~]# scp /etc/keepalived/keepalived.conf 10.0.0.51:/root/ansible/lnmp/keepalived_lb02.conf

#3、web01与web02所需的文件一模一样，所以我们直接收集一个的即可
收集nginx.conf，conf.d/下的配置文件，php71.tar.gz压缩包，php.ini配置文件，/etc/php-fpm.d/www.conf，代码文件

#4、NFS需要收集/etc/exports配置文件

#5、MySQL需要收集数据库信息、redis.conf

3、写剧本

同样按照服务器功能去进行项目部署，有相同需求的操作，可以将其主机放在一个组中一起操作

[root@Ansible lnmp]# cat lnmp.yml 
- hosts: all                    
  tasks: 
    - name: create group www
      group: 
        name: www
        gid: 666
    - name: create user www
      user:
        name: www
        uid: 666
        group: www
        shell: /sbin/nologin
        create_home: false
- hosts: nginx_install_group
  tasks:
    - name: nginx.repo
      copy:
        src: nginx.repo
        dest: /etc/yum.repos.d/nginx.repo
    - name: install nginx
      yum:
        name: nginx
        state: present
    - name: delete default.conf
      file:
        name: /etc/nginx/conf.d/default.conf
        state: absent
    - name: start and enable nginx
      systemd:
        name: nginx
        state: started
        enabled: yes

- hosts: keepalived_install_group
  tasks: 
    - name: copy nginx_lb01.conf
      copy:
        src: nginx_lb01.conf
        dest: /etc/nginx/nginx.conf
    - name: copy proxy_7.conf
      copy:
        src: proxy_7.conf
        dest: /etc/nginx/conf.d/proxy_7.conf
    - name: copy ssl_key to lb01 lb02
      copy:
        src: ssl_key
        dest: /etc/nginx/
    - name: copy proxy_params to lb01 lb02
      copy:
        src: proxy_params
        dest: /etc/nginx/proxy_params
    - name: restart nginx
      systemd:
        name: nginx
        state: restarted
    - name: install keepalived
      yum:
        name: keepalived   
        state: present
    - name: start and enable keepalived
      systemd:
        name: keepalived
        state: started
        enabled: yes

- hosts: lb01
  tasks: 
    - name: copy keepalived_lb01.conf
      copy:
        src: keepalived_lb01.conf
        dest: /etc/keepalived/keepalived.conf

- hosts: lb02
  tasks:
    - name: copy keepalived_lb02.conf
      copy: 
        src: keepalived_lb02.conf
        dest: /etc/keepalived/keepalived.conf          

- hosts: keepalived_install_group
  tasks:
    - name: restart keepalived
      systemd:
        name: keepalived
        state: restarted

- hosts: web_group
  tasks:
    - name: copy nginx_web.conf to web_group
      copy: 
        src: nginx_web.conf
        dest: /etc/nginx/nginx.conf
    - name: copy conf_web.d to web_group
      copy:
        src: conf_web.d/
        dest: /etc/nginx/conf.d
    - name: restart nginx
      systemd:
        name: nginx
        state: restarted
    - name: tar xf php to web_group
      unarchive:
        src: php71.tar.gz
        dest: /root
    - name: localinstall rpm
      yum:
        name: 
          - /root/autoconf-2.69-11.el7.noarch.rpm
          - /root/automake-1.13.4-3.el7.noarch.rpm
          - /root/libevent-2.0.21-4.el7.x86_64.rpm
          - /root/libjpeg-turbo-1.2.90-8.el7.x86_64.rpm
          - /root/libmcrypt-2.5.8-13.el7.x86_64.rpm
          - /root/libmemcached-1.0.16-5.el7.x86_64.rpm
          - /root/libtool-ltdl-2.4.2-22.el7_3.x86_64.rpm
          - /root/libX11-1.6.7-3.el7_9.x86_64.rpm
          - /root/libX11-common-1.6.7-3.el7_9.noarch.rpm
          - /root/libXau-1.0.8-2.1.el7.x86_64.rpm
          - /root/libxcb-1.13-1.el7.x86_64.rpm
          - /root/libXpm-3.5.12-1.el7.x86_64.rpm
          - /root/libxslt-1.1.28-6.el7.x86_64.rpm
          - /root/mod_php71w-7.1.33-1.w7.x86_64.rpm
          - /root/pcre-devel-8.32-17.el7.x86_64.rpm
          - /root/perl-Data-Dumper-2.145-3.el7.x86_64.rpm
          - /root/perl-Test-Harness-3.28-3.el7.noarch.rpm
          - /root/perl-Thread-Queue-3.02-2.el7.noarch.rpm
          - /root/php71w-cli-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-common-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-devel-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-embedded-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-fpm-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-gd-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-mbstring-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-mcrypt-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-mysqlnd-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-opcache-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-pdo-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-pear-1.10.4-1.w7.noarch.rpm
          - /root/php71w-pecl-igbinary-2.0.5-1.w7.x86_64.rpm
          - /root/php71w-pecl-memcached-3.0.4-1.w7.x86_64.rpm
          - /root/php71w-pecl-mongodb-1.5.3-1.w7.x86_64.rpm
          - /root/php71w-pecl-redis-3.1.6-1.w7.x86_64.rpm
          - /root/php71w-process-7.1.33-1.w7.x86_64.rpm
          - /root/php71w-xml-7.1.33-1.w7.x86_64.rpm
        state: present
    - name: copy php.ini to web_group  
      copy: 
        src: php.ini
        dest: /etc/php.ini
    - name: copy www.conf to web_group
      copy:
        src: www.conf
        dest: /etc/php-fpm.d/www.conf
    - name: start and enable php
      systemd:
        name: php-fpm
        state: started
        enabled: yes
    - name: tar xf code.tar.gz
      unarchive:
        src: code.tar.gz
        dest: /
        creates: /code
    - name: chown -R www.www code
      file:
        path: /code
        owner: www
        group: www

- hosts: nfs_group
  tasks:
    - name: Install nfs-utils
      yum:
        name: nfs-utils
        state: present
    - name: Scp NFS server exports
      copy: 
        src: exports
        dest: /etc/exports
        owner: root
        group: root
        mode: 0644
    - name: Create data Directory
      file:
        path: /data
        state: directory
        owner: www
        group: www
        mode: 0755
        recurse: yes
    - name: Create data Directory
      file:
        path: /data/wordpress
        state: directory
        owner: www
        group: www
        mode: 0755
        recurse: yes
    - name: Create data Directory
      file:
        path: /data/wecenter
        state: directory
        owner: www
        group: www
        mode: 0755
        recurse: yes
    - name: Create data Directory
      file:
        path: /data/phpshe
        state: directory
        owner: www
        group: www
        mode: 0755
        recurse: yes
    - name: Start NFS server
      systemd:
        name: nfs-server
        state: started
        enabled: yes

- hosts: web_group
  tasks:
    - name: Install nfs-utils
      yum:
        name: nfs-utils
        state: present
    - name: Mount wordpress_NFS Server
      mount:
        path: /code/wordpress/wp-admin/images
        src: 10.0.0.31:/data/wordpress
        fstype: nfs
        opts: defaults
        state: mounted
    - name: Mount wecenter_NFS Server
      mount:
        path: /code/wecenter/uploads/
        src: 10.0.0.31:/data/wecenter
        fstype: nfs
        opts: defaults
        state: mounted
    - name: Mount phpshe_NFS Server
      mount:
        path: /code/phpshe/data
        src: 10.0.0.31:/data/phpshe
        fstype: nfs
        opts: defaults
        state: mounted

- hosts: mysql_group
  tasks:
    - name: Install mariadb mysql-python redis
      yum:
        name: 
          - mariadb-server
          - MySQL-python            
          - redis
        state: present
    - name: Start httpd Server
      systemd:
        name: mariadb
        state: started
        enabled: yes
    - name: Copy all.sql to Mysql
      copy:
        src: all.sql
        dest: /root/all.sql
    - name: import all.sql
      mysql_db:
        login_host: localhost
        login_port: 3306
        login_user: root
        name: all
        state: import
        target: /root/all.sql
    - name: Restart MariaDB Server
      systemd:
        name: mariadb
        state: restarted
    - name: copy redis.conf to mysql
      copy: 
        src: redis.conf
        dest: /etc/redis.conf
    - name: start and redis
      systemd:
        name: redis
        state: started
        enabled: yes

3、剧本语法检查并执行 

将除了Ansible外的其他主机都恢复镜像，做好ssh免密钥

[root@Ansible ~]# ssh-keygen
[root@Ansible ~]# ssh-copy-id -i .ssh/id_rsa.pub root@10.0.0.4
[root@Ansible ~]# ssh-copy-id -i .ssh/id_rsa.pub root@10.0.0.5
[root@Ansible ~]# ssh-copy-id -i .ssh/id_rsa.pub root@10.0.0.6
[root@Ansible ~]# ssh-copy-id -i .ssh/id_rsa.pub root@10.0.0.7
[root@Ansible ~]# ssh-copy-id -i .ssh/id_rsa.pub root@10.0.0.8
[root@Ansible ~]# ssh-copy-id -i .ssh/id_rsa.pub root@10.0.0.31
[root@Ansible ~]# ssh-copy-id -i .ssh/id_rsa.pub root@10.0.0.51

检查并执行

[root@Ansible ~]# ansible-playbook -- ansible/lnmp/lnmp.yml

[root@Ansible ~]# ansible-playbook ansible/lnmp/lnmp.yml

4、测试项目部署是否正常

windows进行hosts解析10.0.0.5，浏览器分别访问blog.koten.com；zh.koten.com；phpshe.koten.com；phpmyadmin.koten.com查看是否正常运行，查看phpmyadmin是否有会话保持，刷新phpmyadmin查看负载均衡。

注意：七层负载如果加证书的话，无法通过四层负载去访问到浏览器，因为Nginx在返回的时候七层需要先通过四层再返回给浏览器，带证书的请求无法转发给不带证书的请求，导致我们接收不到访问信息，但是看四层日志状态码是200；所以我们要么就是不用四层负载，要么取消七层负载的证书，但是用LVS可以解决这个问题，因为LVS是七层负载是直接返回给浏览器，不经过四层负载。

我是koten，10年运维经验，持续分享运维干货，感谢大家的阅读和关注！