[Nginx] Load Balancing Demo Example

 

#user  nobody;
worker_processes  4;
#pid        logs/nginx.pid;
events {
    worker_connections  1024;
}


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

    # log format
    log_format  main  '[$time_local] remote_addr[$remote_addr] | upstream_addr[$upstream_addr] | server_addr[$server_addr] | url[$request] '
                      'user_agent[$http_user_agent] | referer[$http_referer]';
    
    # request log
    access_log  logs/access.log  main;
    # debug log
    #error_log  logs/error.log debug;
    error_log  logs/error.log debug_event;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
    upstream 172.16.15.75{
          server 172.16.16.25:8080;
          server 172.16.15.109:8080;
          server 172.16.15.99:7070;
 #         server 172.20.131.221:80;
          ip_hash;
           }

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location  / {
            root   html;
            index  index.html index.htm;
            proxy_pass   http://172.16.15.75;
            proxy_redirect    off;
            proxy_set_header   Host $host;
            proxy_set_header   X-Real-IP $remote_addr;
           proxy_set_header   X-Forwarded-For             $proxy_add_x_forwarded_for;  
            client_max_body_size   10m;
            client_body_buffer_size   128k;
            proxy_connect_timeout   30;
            proxy_send_timeout   90;
            proxy_read_timeout   90;
            proxy_buffer_size   4k;
            proxy_buffers    4 32k;
            proxy_busy_buffers_size   64k;
            proxy_temp_file_write_size  64k;
        }

        #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;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # 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;
    #    }
    #}

}