反向代理和负载均衡小结

参考地址：https://www.bilibili.com/video/BV1Bx411Z7Do

http{
    
    server {

        listen      80;
        server_name localhost;
        default_type    text/html;

        location / {
            echo "hello";
        }

        # 反向代理
        # 这个时候访问 localhost/a, 实际访问的是  http://192.168.0.1:80/a
        location /a {
            proxy_pass  http://192.168.0.1:80;
        }

        # 这个时候访问 localhost/a/, 实际访问的是  http://192.168.0.1:80/
        location /a/ {
            proxy_pass  http://192.168.0.1:80/;
        }

    }

}

反向代理小结

location /a {
    proxy_pass http://ip;
}

location /b/ {
    proxy_pass http://ip/;
}

上述配置会导致：
/a/x -> http://ip/a/x;
/b/x -> http://ip/x;

负载均衡小结

http{
    
    upstream group1 {
        server 192.168.0.12:80 weight=10;
        server 192.168.0.12:81 weight=1;
    }

    server {

        listen      80;
        server_name localhost;
        default_type    text/html;

        location / {
            echo "hello";
        }

        # 这个时候，访问 localhost 会跳转到 192.168.0.12:80或者 192.168.0.12:81
        # 过程是随机的，可以通过weight参数控制权重
        location /a/ {
            proxy_pass  http://group1/;
        }

    }

}