1、关闭selinux、firewall

2、修改/etc/security/limits.conf添加以下内容：

* soft    nofile  65536

* hard    nofile  65536

3、修改/etc/security/limits.d/20-nproc.conf 

*          soft    nproc     65536

4、重启系统，查看修改结果

ulimit -a

5、配置yum源/etc/yum.repos.d/nginx.repo

[nginx]

name=nginx repo

baseurl=http://nginx.org/packages/centos/7/$basearch/

gpgkey=http://nginx.org/keys/nginx_signing.key

gpgcheck=1

enabled=1

6、安装Nginx、修改Nginx配置文件/etc/nginx/nginx.conf

#安装Nginx

yum install -y nginx

#修改参数

worker_processes  2;

worker_connections  65536;

#添加以下内容

stream { 

log_format basic '$remote_addr [$time_local] '

                     '$protocol $status $bytes_sent $bytes_received '

                     '$session_time ' '$upstream_addr';

        access_log /var/log/nginx/proxy.access.log basic;


upstream ssh_proxy {  

hash $remote_addr consistent;  

server 192.168.1.212:22; 

server 192.168.1.213:22; 

}  


    server {  

        listen       220;  

  

        proxy_connect_timeout 1s;  

        proxy_timeout 300s;  

        proxy_pass ssh_proxy;  

    }  

}

7、启动Nginx测试