Liunx下使用Nginx负载均衡

我是centos8得主机

安装命令:

yum install nginx

如果为Ubuntu主机

sudo apt-get install nginx

安装完成后，启用并启动Nginx服务：

sudo systemctl enable nginx

sudo systemctl start nginx

然后我们有2个服务：

一个地址为: http://xxxxxx1:50631/index.html

一个为:     http://xxxxxx2:50631/index.html

 

 

 

接下来修改 nginx.conf 配置代理：

 然后我们再回来配置Nginx，进入 /etc/nginx，然后 vi 修改nginx.conf ，保存

 

再liunx 使用 vi编辑命令如果要修改需要按键盘 i键

如果要退出保存需要按esc 然后输入  :wq   注意这里前面有个冒号

修改以下内容得东西

全部内容如下：

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #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  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

   upstream rtservice {
            server xxxxxx1:50631;
            server xxxxxx2:50631;
    }

    server {
       listen   50501;
       server_name 你的域名;
        location /{
            proxy_pass   http://rtservice;
            index  index.html index.htm;
        }
        location = /50x.html {
            root   html;
        }
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

保存以后使用命令重启nginx

nginx -s reload

如果重启报错

启动nginx: [error] open() “/var/run/nginx/nginx.pid“ failed (2: No such file or directory)

那么就执行

nginx 
nginx -s reload

完成后我们访问域名+端口

nginx已经成功运行了