nginx负载均衡

在5机器设置web集群负载均衡

1、配置nginx的yum源
[root@lb-5 ~]#cat  /etc/yum.repos.d/nginx.repo
[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=1
enabled=1
gpgkey=https://nginx.org/keys/nginx_signing.key

2、安装nginx
[root@slb-5 ~]# yum clean all
[root@slb-5 ~]# yum install nginx -y

3、放入反向代理参数
[root@slb-5 ~]# cat /etc/nginx/proxy_params.conf 
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 30;
proxy_send_timeout 60;
proxy_read_timeout 60;
proxy_buffering on;
proxy_buffer_size 32k;
proxy_buffers 4 128k;

实战nginx反向代理

5机器

[root@slb-5 /etc/nginx/conf.d]#cat proxy.conf 
server{

  listen 80;
  server_name wordpress.laoliu.cc;
  location / {
    proxy_pass http://172.16.1.8:12345;
    include /etc/nginx/proxy_params.conf;

  }



}




重启
[root@slb-5 /etc/nginx/conf.d]#systemctl start nginx

web机器（8）

[root@web-8 /etc/nginx/conf.d]#cat wordpress.conf 
server{
    listen 12345;
    server_name wordpress.laoliu.cc;

    # 静态请求，资源存放路径
    root /code/wordpress;
    index index.php index.html;

    # 动态请求处理
    location ~ \.php$ {

        root /code/wordpress;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}
[root@web-8 /etc/nginx/conf.d]#systemctl restart nginx

做好dns解析

日志访问

tail -f /var/log/nginx/access.log

负载均衡策略

wordpress的权重

5机器配置文件

[root@slb-5 /etc/nginx/conf.d]#cat proxy.conf 
upstream web-pools{
  server 172.16.1.7:12345 weight=4;
  server 172.16.1.8:12345 weight=1;

}

server{

  listen 80;
  server_name wordpress.laoliu.cc;
  location / {
    proxy_pass http://web-pools;
    include /etc/nginx/proxy_params.conf;

  }

}

[root@slb-5 /etc/nginx/conf.d]#systemctl restart nginx

web机器（7、8）

[root@web-7 /etc/nginx/conf.d]#cat wordpress.conf 
server{
    listen 12345;
    server_name wordpress.laoliu.cc;

    # 静态请求，资源存放路径
    root /code/wordpress;
    index index.php index.html;

    # 动态请求处理
    location ~ \.php$ {

        root /code/wordpress;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

[root@web-7 /etc/nginx/conf.d]#systemctl restart nginx

[root@web-8 /etc/nginx/conf.d]#cat wordpress.conf 
server{
    listen 12345;
    server_name wordpress.laoliu.cc;

    # 静态请求，资源存放路径
    root /code/wordpress;
    index index.php index.html;

    # 动态请求处理
    location ~ \.php$ {

        root /code/wordpress;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

[root@web-8 /etc/nginx/conf.d]#systemctl restart nginx

wecenter

51机器

[root@slb-5 /etc/nginx/conf.d]#cat proxy2.conf 
upstream web-dsss {
  server 172.16.1.7:23456 weight=4;
  server 172.16.1.8:23456 weight=1;

}

server{

  listen 80;
  server_name wecenter.laoliu.cc;
  location / {
    proxy_pass http://web-dsss;
    include /etc/nginx/proxy_params.conf;

  }

}

[root@slb-5 /etc/nginx/conf.d]#systemctl restart nginx

web机器（7、8）

[root@web-7 /etc/nginx/conf.d]#cat wecenter.conf 
server{
    listen 23456;
    server_name wecenter.laoliu.cc;

    # 静态请求，资源存放路径
    root /code/wecenter;
    index index.php index.html;

    # 动态请求处理
    location ~ \.php$ {

        root /code/wecenter;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

[root@web-7 /etc/nginx/conf.d]#systemctl restart nginx


[root@web-8 /etc/nginx/conf.d]#cat wecenter.conf 
server{
    listen 23456;
    server_name wecenter.laoliu.cc;

    # 静态请求，资源存放路径
    root /code/wecenter;
    index index.php index.html;

    # 动态请求处理
    location ~ \.php$ {

        root /code/wecenter;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

[root@web-8 /etc/nginx/conf.d]#systemctl restart nginx

做好backup

将web-8作为备份机，请求只发给web7，当7宕机时，8机器直接接替工作

[root@slb-5 /etc/nginx/conf.d]#cat proxy.conf 
upstream web-pools{
  server 172.16.1.7:12345 weight=4;
  server 172.16.1.8:12345 weight=1 backyp;

}

server{

  listen 80;
  server_name wordpress.laoliu.cc;
  location / {
    proxy_pass http://web-pools;
    include /etc/nginx/proxy_params.conf;

  }

}

[root@slb-5 /etc/nginx/conf.d]#cat proxy2.conf 
upstream web-dsss {
  server 172.16.1.7:23456 weight=4;
  server 172.16.1.8:23456 weight=1 backup;

}

server{

  listen 80;
  server_name wecenter.laoliu.cc;
  location / {
    proxy_pass http://web-dsss;
    include /etc/nginx/proxy_params.conf;

  }

}

重启
systemctl restart nginx

七没挂时

七挂了，八接替工作

根据用户client_agent判断转发

wordpress.yuchaoit.cc

51机器

[root@slb-5 /etc/nginx/conf.d]#cat wordpress.yuchaoit.conf 
upstream android {
  server 172.16.1.7:22333;
}
upstream iphone {
  server 172.16.1.8:22333;
}

upstream pc {
  server 172.16.1.7:22222;
  server 172.16.1.8:22222;
}

server {
  
  listen 80;
  server_name wordpress.yuchaoit.cc;

  location / {
    #默认页面，交给pc
    proxy_pass http://pc;
    include proxy_params.conf;

    #判断时iphone用户，基于正则且不区分大小写
    if ($http_user_agent ~* "iphone") {
      proxy_pass http://iphone;
}
    #判断是安卓用户，与iphone一样
    if ($http_user_agent ~* "android") {
      proxy_pass http://android;
}
    #如果是IE，禁止访问
    if ($http_user_agent ~* "msie") {
      return 403 "禁止访问//IE已经淘汰，你out了老哥！！\n";
}

  }

}


[root@slb-5 /etc/nginx/conf.d]#systemctl restart nginx

创建web（7、8）

创建pc页面

[root@web-7 /etc/nginx/conf.d]#vim pc.conf
[root@web-7 /etc/nginx/conf.d]#mkdir -p /pc/wordpress
[root@web-7 /etc/nginx/conf.d]#echo "我是7机器的 PC页面 啦啦啦！！！！" > /pc/wordpress/index.html
[root@web-7 /etc/nginx/conf.d]#cat pc.conf 
server {

  listen 22222;
  server_name _;
  charset utf-8;
  location / {
    root /pc/wordpress;
    index index.html;


  }



}
[root@web-7 /etc/nginx/conf.d]#systemctl restart nginx


[root@web-8 /etc/nginx/conf.d]#cat pc.conf 
server {

  listen 22222;
  server_name _;
  charset utf-8;
  location / {
    root /pc/wordpress;
    index index.html;


  }



}

[root@web-8 /etc/nginx/conf.d]#mkdir -p /pc/wordpress
[root@web-8 /etc/nginx/conf.d]#echo "我是8机器的 PC页面 噢噢噢！！！！" > /pc/wordpress/index.html

访问

创建web组的移动页面

web-7
[root@web-7 /etc/nginx/conf.d]#vim android.conf
[root@web-7 /etc/nginx/conf.d]#cat android.conf 
server {
    listen 22333;
    server_name _;
    charset utf-8;
    location / {

        root /android/wordpress;
        index index.html;
    }
}
[root@web-7 /etc/nginx/conf.d]#mkdir -p /android/wordpress
[root@web-7 /etc/nginx/conf.d]#echo "我是7机器的 移动端页面 啦啦啦！！！！" > /android/wordpress/index.html
[root@web-7 /etc/nginx/conf.d]#systemctl restart nginx


web-8
[root@web-8 /etc/nginx/conf.d]#vim iphone.conf
[root@web-8 /etc/nginx/conf.d]#cat iphone.conf 
server {
    listen 22333;
    server_name _;
    charset utf-8;
    location / {

        root /iphone/wordpress;
        index index.html;
    }
}

[root@web-8 /etc/nginx/conf.d]#mkdir -p /iphone/wordpress
[root@web-8 /etc/nginx/conf.d]#echo "我是8机器的 移动页面IPHONE  噢噢噢！！！！" > /iphone/wordpress/index.html
[root@web-8 /etc/nginx/conf.d]#systemctl restart nginx

访问移动端

测试ie浏览器

wecenter.yuchaoit.cc

51机器

[root@slb-5 /etc/nginx/conf.d]#cat wencenter.yuchaoit.conf 
upstream androidr {
  server 172.16.1.7:33333;
}
upstream iphones {
  server 172.16.1.8:33333;
}

upstream pcc {
  server 172.16.1.7:33322;
  server 172.16.1.8:33322;
}

server {
  
  listen 80;
  server_name wecenter.yuchaoit.cc;

  location / {
    #默认页面，交给pc
    proxy_pass http://pcc;
    include proxy_params.conf;

    #判断时iphone用户，基于正则且不区分大小写
    if ($http_user_agent ~* "iphone") {
      proxy_pass http://iphone;
}
    #判断是安卓用户，与iphone一样
    if ($http_user_agent ~* "android") {
      proxy_pass http://android;
}
    #如果是IE，禁止访问
    if ($http_user_agent ~* "msie") {
      return 403 "禁止访问//IE已经淘汰，你out了老哥！！\n";
}

  }

}



[root@slb-5 /etc/nginx/conf.d]#systemctl restart nginx

创建web（7、8）

创建pc页面

[root@web-7 /etc/nginx/conf.d]#vim pcc.conf
[root@web-7 /etc/nginx/conf.d]#cat pcc.conf 
server {

  listen 33322;
  server_name _;
  charset utf-8;
  location / {
    root /pc/wecenter;
    index index.html;


  }



}
[root@web-7 /etc/nginx/conf.d]#mkdir -p  /pc/wecenter
[root@web-7 /etc/nginx/conf.d]#echo "我是7机器的 PC页面 啦啦啦！！！！" > /pc/wordpress/index.html
[root@web-7 /etc/nginx/conf.d]#echo "我是7机器的 PC页面 啦啦啦！！！！" > /pc/wecenter/index.html
[root@web-7 /etc/nginx/conf.d]#systemctl restart nginx



[root@web-8 /etc/nginx/conf.d]#vim pcc.conf 
[root@web-8 /etc/nginx/conf.d]#cat pcc.conf 
server {

  listen 33322;
  server_name _;
  charset utf-8;
  location / {
    root /pc/wecenter;
    index index.html;


  }



}

[root@web-8 /etc/nginx/conf.d]#mkdir -p  /pc/wecenter
[root@web-8 /etc/nginx/conf.d]#echo "我是8机器的 PC页面 噢噢噢！！！！" > /pc/wecenter/index.html
[root@web-8 /etc/nginx/conf.d]#systemctl restart nginx

访问

移动端

[root@web-7 /etc/nginx/conf.d]#vim androidr.conf 
[root@web-7 /etc/nginx/conf.d]#cat androidr.conf 
server {
    listen 33333;
    server_name _;
    charset utf-8;
    location / {

        root /android/wecenter;
        index index.html;
    }
}
[root@web-7 /etc/nginx/conf.d]#mkdir -p /android/wecenter
[root@web-7 /etc/nginx/conf.d]#echo "我是7机器的 移动端页面 啦啦啦！！！！" > /android/wecenter/index.html
[root@web-7 /etc/nginx/conf.d]#systemctl restart nginx


[root@web-8 /etc/nginx/conf.d]#vim iphones.conf 
[root@web-8 /etc/nginx/conf.d]#cp iphone.conf iphones.conf 
[root@web-8 /etc/nginx/conf.d]#vim iphones.conf 
[root@web-8 /etc/nginx/conf.d]#cat iphones.conf 
server {
    listen 33333;
    server_name _;
    charset utf-8;
    location / {

        root /iphone/wecenter;
        index index.html;
    }
}

[root@web-8 /etc/nginx/conf.d]#mkdir -p /iphone/wecenter
[root@web-8 /etc/nginx/conf.d]#echo "我是8机器的 移动页面IPHONE  噢噢噢！！！！" > /iphone/wecenter/index.html
[root@web-8 /etc/nginx/conf.d]#systemctl restart nginx

测试IE

wordpress与wecenter动静态转换

51机器

[root@slb-5 /etc/nginx/conf.d]#cat wordpress.conf 
upstream android {
  server 172.16.1.7:2233;
}
upstream iphone {
  server 172.16.1.8:2233;
}

upstream pc {
  server 172.16.1.7:22234;
  server 172.16.1.8:22234;
}

server {
  
  listen 80;
  server_name huya.laoliu.cn;

  location / {
    #默认页面，交给pc
    proxy_pass http://pc;
    include proxy_params.conf;

    #判断时iphone用户，基于正则且不区分大小写
    if ($http_user_agent ~* "iphone") {
      proxy_pass http://iphone;
}
    #判断是安卓用户，与iphone一样
    if ($http_user_agent ~* "android") {
      proxy_pass http://android;
}
    #如果是IE，禁止访问
    if ($http_user_agent ~* "msie") {
      return 403 "禁止访问//IE已经淘汰，你out了老哥！！\n";
}

  }

}

web-7

[root@web-7 /etc/nginx/conf.d]#cat wecenter.conf 
server{
    listen 22234;
    server_name wecenter.laoliu.cc;

    # 静态请求，资源存放路径
    root /code/wecenter;
    index index.php index.html;

    # 动态请求处理
    location ~ \.php$ {

        root /code/wecenter;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

[root@web-7 /etc/nginx/conf.d]#systemctl restart nginx

web-8

[root@web-8 /etc/nginx/conf.d]#cat wordpress.conf 
server{
    listen 22234;
    server_name wordpress.laoliu.cc;

    # 静态请求，资源存放路径
    root /code/wordpress;
    index index.php index.html;

    # 动态请求处理
    location ~ \.php$ {

        root /code/wordpress;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}