nginx+tomcat配置集群

1. 下载nginx。下载稳定版，下载地址
2. 解压，修改conf里的nginx.conf

#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;

    upstream  127.0.0.1 {  #服务器集群名字   
        server    127.0.0.1:18080  weight=2;#服务器配置   weight是权重的意思，权重越大，分配的概率越大。  
        server    192.168.1.137:8080  weight=2;  
        server    192.168.1.112:8080 weight=2;
    }    

    server {
        listen       90;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm index.jsp;
            proxy_pass http://127.0.0.1;
        }

        #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;
        #}
    }

}

upstream里的server配置的是3个服务器地址，weigth是权重，127.0.0.1是对外IP，listen 90是端口，location里的prox_pass 是依然是对外IP。
3. 启动和关闭

启动nginx: cmd进入你们的nginx目录。start nginx.

关闭nginx: nginx -s stop. 不会有运行页面 一闪而过 在任务管理器可以看到

tomcat的启动和关闭就按照正常流程，对应的ip+端口正确就行。验证的话可以把放在不同的tomcat里的主页面做一点略微区分，看下是不是配置成功。