综合实验（nginx高可用+项目部署*2+mysql-mmm）

要求：

1、动静分离HTML交给Nginx本身去处理
2、客户端访问：www.bbb.com可以访问到博客
                              www.aaa.com可以访问的超市项目

本次实验需要9台虚拟机（不加DNS服务器）

 添加DNS解析域名买一台服务器都需要加；在参考内容中有一样的命令无需操作

echo '
192.168.2.6 Slave1
192.168.2.7 Slave2
192.168.2.8 Master2
192.168.2.9 Master1
192.168.2.3 Monitor
192.168.2.10 bk
192.168.2.2 Tomcat
192.168.2.11 Nginx1
192.168.2.12 Nginx2
192.168.2.200 www.aaa.com
192.168.2.200 www.bbb.com'>> /etc/hosts       

 注意修改服务器名称

 参考：mysql-mmm高可用群集

搭建完成后测试主主复制主从复制

在 master1 上创建 user 库
 
mysql> create database user;                 
Query OK, 1 row affected (0.00 sec)
                     
mysql> show databases;                      
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| user               |
+--------------------+
5 rows in set (0.00 sec)
————————————————————————————————————————
master2     
 
mysql> show databases;                      
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| user               |
+--------------------+
5 rows in set (0.00 sec)
 
————————————————————————————————————————
slave1
 
mysql> show databases;                  
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| user               |
+--------------------+
5 rows in set (0.00 sec)
 
————————————————————————————————————————
slave2
 
mysql> show databases;                     
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| user               |
+--------------------+
5 rows in set (0.00 sec)

在  Monitor 上查看状态

[root@monitor ~]# mmm_control show              
  db1(192.168.2.9) master/ONLINE. Roles: writer(192.168.2.100)
  db2(192.168.2.8) master/ONLINE. Roles: 
  db3(192.168.2.7) slave/ONLINE. Roles: reader(192.168.2.101)
  db4(192.168.2.6) slave/ONLINE. Roles: reader(192.168.2.102)

没有vip手动创建在mmm的文档中有

参考：Centos 7.4——LAMP架构分离部署+社区论坛部署

注意在参考内容中不做：（四）、安装phpMyAdmin 

注意：授权用户和密码、和服务器地址

参考：Tomcat应用部署

使用：apache-tomcat-8.5.16.tar.gz 版本安装步骤相同

 注意：指定的数据库地址

安装nginx参考：Nginx-简介及安装

注意：建议使用编译安装

Nginx1和Nginx2安装相同

 配置ngixn后重启

                ngixn1 配置
————————————————————————————————————————————————————
vim /usr/local/nginx/conf/nginx.conf

worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;

    server {                                                   #虚拟主机1
        listen       80;
        server_name  www.ccc.com;
        location ~ .*.(html|htm|css)$ {
             root   html;
             index  index.html index.htm;
         }
        }
    server {                                                   #虚拟主机2
        listen       80;
        server_name  www.aaa.com;

        location / {
            proxy_pass http://192.168.2.2:8080/WebRoot;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_redirect off;
           }
         }
         
    server {                                                    #虚拟主机3
        listen       80;
        server_name  www.bbb.com;
        location / {
            proxy_pass http://192.168.2.10/sqlt/upload/forum.php;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_redirect off;
        }
   }
}

保存

nginx -s reload            

————————————————————————————————————————————————————————————————————————————————
            ngixn2 配置
—————————————
vim /usr/local/nginx/conf/nginx.conf

worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;

    server {                                                   #虚拟主机1
        listen       80;
        server_name  www.ccc.com;
        location ~ .*.(html|htm|css)$ {
             root   html;
             index  index.html index.htm;
         }
        }
    server {                                                   #虚拟主机2
        listen       80;
        server_name  www.aaa.com;
        location / {
            proxy_pass http://192.168.2.2:8080/WebRoot;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_redirect off;
           }
         }
         
    server {                                                    #虚拟主机3

        listen       80;
        server_name  www.bbb.com;
        location / {
            proxy_pass http://192.168.2.10/sqlt/upload/forum.php;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_redirect off;
        }
   }
}

保存

nginx -s reload          

在Nginx1和Nginx2操作

安装及配置参考：七章——Keepalived双机热备（应用——linux防护与群集）

 nginx高可用：只有nginx1宕机（或关机）VIP才会便宜到nginx2上

 注意：本机需要修改hosts文件：如192.168.2.200 www.aaa.com

访问 www.aaa.com 为超市管理系统

访问 www.bbb.com 是社区论坛

访问 www.ccc.com 是静态页面