Nginx简单配置（二）负载均衡

#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 aaa{

      server localhost:8080 weight=10 max_fails=2 fail_timeout=30s; #weight权重，值越大，在负载均衡时分配的请求越多  

  #tomcat配置 <Context docBase="boss" path="/" reloadable="true" source="org.eclipse.jst.jee.server:boss"/></Host> path改为 / 原为 "/boss"

}   #1.down 表示单前的server暂时不参与负载 

#2.weight 默认为1.weight越大，负载的权重就越大。 

#3.max_fails ：允许请求失败的次数默认为1.当超过最大次数时，返回proxy_next_upstream 模块定义的错误 

#4.fail_timeout:max_fails次失败后，暂停的时间。 

#5.backup： 其它所有的非backup机器down或者忙的时候，请求backup机器。所以这台机器压力会最轻。 

    server {

        listen       80;

        server_name  localhost;

index index.jsp index.htm index.php;

#root D:\Nginx;  ##项目目录 D:\Nginx\boss\WEB-INF

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

#location / {

        #   root   html;

        #    index  index.html index.htm;   ##进入nginx 的html文件夹下的 index页， 在index 页进行重定向

        #}

location / {

            proxy_pass http://aaa;  ##引用upstream 

        }

  

location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|txt)$ {  

root D:\Nginx\boss;

expires 24h; #设置过期时间  

  

} 

location ~ .*\.(js|css)?$

                {

root D:\Nginx\boss;

                                expires      12h;

                }

        #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;

    #    }

    #}

}