使用nginx的tcp负载解决exchange2016的客户端访问负载

安装nginx过程就参考nginx官网吧，

这里提供一下具体我的测试环境中nginx的配置

修改配置文件：

vim /etc/nginx/nginx.conf

具体内容如下：

# For more information on configuration, see:

#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/ user nginx;

worker_processes auto;

error_log /var/log/nginx/error.log;

pid /var/run/nginx.pid;
# Load dynamic modules. See /usr/share/nginx/README.dynamic.

include /usr/share/nginx/modules/*.conf;
events {

    worker_connections  1024;

}

http {

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '

                      '$status $body_bytes_sent "$http_referer" '

                      '"$http_user_agent" "$http_x_forwarded_for"';
    access_log  /var/log/nginx/access.log  main;
    sendfile            on;

    tcp_nopush          on;

    tcp_nodelay         on;

    keepalive_timeout   65;

    types_hash_max_size 2048;
    include             /etc/nginx/mime.types;

    default_type        application/octet-stream;
    # Load modular configuration files from the /etc/nginx/conf.d directory.

    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.

    include /etc/nginx/conf.d/*.conf;

}

#负载exchange2016前端的模块配置

stream {

    upstream mail {

        least_conn;//连接数进行负载

        server 172.20.224.136:443 max_fails=2 fail_timeout=10s;//被动检查服务器响应

        server 172.20.224.57:443 max_fails=2 fail_timeout=10s;

        }
    server {

        listen        443;

        proxy_pass    mail;

        proxy_timeout 3s;

        proxy_connect_timeout 1s;

    }
    upstream smtp {

        least_conn;

        server 172.20.224.136:25 max_fails=2 fail_timeout=10s;

        server 172.20.224.57:25 max_fails=2 fail_timeout=10s;

        }
    server {

        listen        25;

        proxy_pass    smtp;

        proxy_timeout 3s;

        proxy_connect_timeout 1s;

    }
    upstream pop {

        least_conn;

        server 172.20.224.136:110 max_fails=2 fail_timeout=10s;

        server 172.20.224.57:110 max_fails=2 fail_timeout=10s;

        }
    server {

        listen        110;

        proxy_pass    pop;

        proxy_timeout 3s;

        proxy_connect_timeout 1s;

    }
    upstream imap {

        least_conn;

        server 172.20.224.136:143 max_fails=2 fail_timeout=10s;

        server 172.20.224.57:143 max_fails=2 fail_timeout=10s;

        }
    server {

        listen        143;

        proxy_pass    imap;

        proxy_timeout 3s;

        proxy_connect_timeout 1s;

    }
    upstream pops {

        least_conn;

        server 172.20.224.136:995 max_fails=2 fail_timeout=10s;

        server 172.20.224.57:995 max_fails=2 fail_timeout=10s;

        }
    server {

        listen        995;

        proxy_pass    pops;

        proxy_timeout 3s;

        proxy_connect_timeout 1s;

    }

        upstream imaps {

        least_conn;

        server 172.20.224.136:993 max_fails=2 fail_timeout=10s;

        server 172.20.224.57:993 max_fails=2 fail_timeout=10s;

        }
    server {

        listen        993;

        proxy_pass    imaps;

        proxy_timeout 3s;

        proxy_connect_timeout 1s;

    }
    upstream smtps {

        least_conn;

        server 172.20.224.136:587 max_fails=2 fail_timeout=10s;

        server 172.20.224.57:587 max_fails=2 fail_timeout=10s;

        }
    server {

        listen        587;

        proxy_pass    smtps;

        proxy_timeout 3s;

        proxy_connect_timeout 1s;

    }
        upstream smtps1 {

        least_conn;

        server 172.20.224.136:465 max_fails=2 fail_timeout=10s;

        server 172.20.224.57:465 max_fails=2 fail_timeout=10s;

        }
    server {

        listen        465;

        proxy_pass    smtps1;

        proxy_timeout 3s;

        proxy_connect_timeout 1s;

    }

   }

配置使用wq推出保存，在使用命令 
cd /etc/nginx/nginx.d
nginx -s reload
重新加载服务之后就可以使用了