一、提前条件

负载均衡：nginx.tar.gz

云服务器：CentOS 8

二、安装过程

1.安装必要插件

yum -y install gcc pcre pcre-devel zlib zlib-devel openssl openssl-devel

参数解释：

1.gcc用于编译c（nginx是由c开发的）

2.pcre pcre-devel是一个库，包括一些正则表达式库（pcre来解析正则表达式，因此nginx支持正则表达式匹配）

3.zlib zlib-devel提供多种压缩和解压的方式（nginx使用zlib对http包进行gzip）

4.openssl openssl-devel是用来数据传输加密，防止数据泄露（nginx因此能够去安装ssl证书）

2.解压

tar -zxvf nginx.tar.gz

3.开始安装-指定安装路径

./configure --prefix=/laokou/nginx

4.编译

make && make install

5.启动

cd /laokou/nginx/sbin

./nginx

6.配置（反向代理网关）


worker_processes  1;

events {
    worker_connections  1024;
}


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

    sendfile        on;

    keepalive_timeout  65;

    server {
        listen       80;
        server_name  localhost;
		
		add_header 'Access-Control-Allow-Origin' "$http_origin" always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
        add_header 'Access-Control-Allow-Methods' 'GET, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified- ?Since,Keep-Alive,Origin,User-Agent,X-Requested-With' always;
		
		location / {
			proxy_pass http://127.0.0.1:1234;
			proxy_connect_timeout 6000;
			proxy_read_timeout 6000;
			proxy_set_header   X-Real-IP            $remote_addr;
			proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
			proxy_set_header   Host                   $http_host;
			proxy_set_header   X-NginX-Proxy    true;
			proxy_set_header   Connection "";
			proxy_http_version 1.1;
			proxy_set_header Upgrade $http_upgrade;
			proxy_set_header Connection "upgrade";
        }
		
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }

}