Nginx 作为代理服务与负载均衡

代理服务

代理一代为办理（代理理财、代理收货等等）

代理区别

区别在于代理的对象不一样

正向代理代理的对象是客户端

反向代理代理的对象是服务端

反向代理配置

server {
    listen       80;
    server_name  localhost jeson.t.imooc.io;

    #charset koi8-r;
    access_log  /var/log/nginx/test_proxy.access.log  main;

    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }

    location ~ /test_proxy.html$ {
       proxy_pass http://127.0.0.1:8080;
       include proxy_params;
    }
}

# proxy_params 参数，同目录下另一个文件保存

proxy_redirect default;

proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;

proxy_connect_timeout 30;
proxy_send_timeout 60;
proxy_read_timeout 60;

proxy_buffer_size 32k;
proxy_buffering on;
proxy_buffers 4 128k;
proxy_busy_buffers_size 256k;
proxy_max_temp_file_size 256k;

正向代理

server {
    listen       80;
    server_name  localhost jeson.t.imooc.io;

    #charset koi8-r;
    access_log  /var/log/nginx/test_proxy.access.log  main;
    resolver 8.8.8.8;
    location / {
        proxy_pass http://$http_host$request_uri;
    }
}

负载均衡配置

upstream imooc {
        server 116.62.103.228:8001;
        server 116.62.103.228:8002;
        server 116.62.103.228:8003;
    }

server {
    listen       80;
    server_name  localhost jeson.t.imooc.io;

    access_log  /var/log/nginx/test_proxy.access.log  main;
    resolver  8.8.8.8;

    location / {
        proxy_pass http://imooc;
        include proxy_params;
    }

}

# 设置权重
upstream imooc {
        server 116.62.103.228:8001 down;
        server 116.62.103.228:8002 backup;
        server 116.62.103.228:8003 max_fails=1 fail_timeout=10s;
    }

    upstream imooc {
        server 116.62.103.228:8001;
        server 116.62.103.228:8002 weight=5;
        server 116.62.103.228:8003;
    }

# IP hash
    upstream imooc {
        ip_hash;
        server 116.62.103.228:8001;
        server 116.62.103.228:8002;
        server 116.62.103.228:8003;
    }
# uri hash
    upstream imooc {
        hash $request_uri;
        server 116.62.103.228:8001;
        server 116.62.103.228:8002;
        server 116.62.103.228:8003;
    }