Nginx配置反向代理和负载均衡

配置反向代理:

        # 反向代理,处理管理端发送的请求
        location /api/ {
            proxy_pass   http://localhost:8080/admin/;
            #proxy_pass   http://webservers/admin/;
        }

上面的代码会将当前服务器请求的/api/请求转发到localhost:8080/admin/
地址上去

配置负载均衡:

1,首先配置需要参与负载均衡的服务器地址

    upstream webservers{
      server 127.0.0.1:8080 weight=90 ;
      server 127.0.0.1:8088 weight=10 ;
    }

2,再配置反向代理进行转发

       location /api/ {
            #proxy_pass   http://webservers/admin/;
        }

系统就会自动将对应的api请求转发到upstream上面配置的两台服务器上面,注意
webservers一定要保持一致

参考代码:

示例代码如下:

#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;

    map $http_upgrade $connection_upgrade{
        default upgrade;
        '' close;
    }

    upstream webservers{
      server 127.0.0.1:8080 weight=90 ;
      #server 127.0.0.1:8088 weight=10 ;
    }

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

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

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # 反向代理,处理管理端发送的请求
        location /api/ {
            proxy_pass   http://localhost:8080/admin/;
            #proxy_pass   http://webservers/admin/;
        }

        # 反向代理,处理用户端发送的请求
        location /user/ {
            proxy_pass   http://webservers/user/;
        }

        # WebSocket
        location /ws/ {
            proxy_pass   http://webservers/ws/;
            proxy_http_version 1.1;
            proxy_read_timeout 3600s;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "$connection_upgrade";
        }

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }


    # 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;
    #    }
    #}

}

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