一、拓扑

 

 

 

二、安装软件

wget

wget

       1、安装pcre

             tar zxvf pcre-8.21.tar.gz 

             cd pcre-8.21             ./configure               make && make install

       2、安装nginx

             tar zxvf nginx-1.0.11.tar.gz 

             cd nginx-1.0.11              useradd -s /sbin/nologin www            ./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module            make            make install

三、配置nginx

           cd /usr/local/nginx/

           cp nginx.conf nginx.conf.bak

           vi nginx.conf

############################################################################### user www www; worker_processes 1; error_log   /usr/local/nginx/logs/nginx_error.log crit; pid        /usr/local/nginx/nginx.pid; worker_rlimit_nofile 51200; ############################################################################## events{      use epoll;      worker_connections 51200; } ############################################################################## http{     include       mime.types;     default_type  application/octet-stream;     sendfile on;     tcp_nopush on;     keepalive_timeout 60;     tcp_nodelay on;

##############################################################################

upstream   192.168.1.250 {     server 192.168.1.251;     server 192.168.1.252; } ############################################################################## server {    listen 80;    server_name *.test.com;

         location / {

                        proxy_pass        ;

                        proxy_set_header   Host             $host;

                        proxy_set_header   X-Real-IP        $remote_addr;

                        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;

}          location /nginx_status {                        stub_status on;                        access_log off;                        allow 192.168.1.253;                        deny all; }

###############################################################################

log_format www_test_com  '$remote_addr - $remote_user [$time_local] $request '

                         '"$status" $body_bytes_sent "$http_referer" '

                         '"$http_user_agent" "$http_x_forwarded_for"';

access_log  /usr/local/nginx/logs/nginx.log  www_test_com;     }

}

################################################################################  

四、测试配置是否正常

      [root@linux-1 conf]# /usr/local/nginx/sbin/nginx -t

       nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok        nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful      

############################以上说明配置正确###################  

五、启动和停止nginx负载均衡器

              启动：

               ulimit -SHn 51200

               /usr/local/nginx/sbin/nginx

               停止：

               killall -9 nginx    ####注意nginx可以写脚本形式让它启动停止

六、测试

       web1-------->ip:192.168.1.251------------>index.html------------->the is web1

        web2-------->ip:192.168.1.252------------>index.html------------->the is web2

        测试结果：

        

 

 

七、简单的使用监控模块（没有像LVS的ipvsadm强大，只是简单的查看而已）

       

       

##########################到些简单的负载配置完成#######################

 

八、简单讲解配置文件（讲解有错误请指教）：

        worker_processes 1;  ###一般配置跟CPU的数量一样

        error_log   /usr/local/nginx/logs/nginx_error.log crit;###nginx错误日志使用

        use epoll；###epoll模式

       worker_connections 51200; ###每个进程最大连接数51200个

      upstream   192.168.1.250 {

            server 192.168.1.251;             server 192.168.1.252;      } ###############这个就是负载了，下面的就是后端的源服务器  

      location / {

                        proxy_pass        ;

                        proxy_set_header   Host             $host;

                        proxy_set_header   X-Real-IP        $remote_addr;

                        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;

}##########后端源Web服务器通过X-Forwarded-For获取用户真实IP地址  

 location /nginx_status {

                       stub_status on;                        access_log off;                        allow 192.168.1.253;                        deny all; }############这个就是简单监控nginx的状态