nginx+apache负载均衡

huashan8

　　学习过程记录如下：感谢为我提供帮助的朋友们！
　　1: 在一台机器上安装nginx（过程省略），该机器的ip为：192.168.1.2
　　2：在另一台机器上安装php+mysql+apache（过程省略） ，该机器的ip为：192.168.1.9
　　3：将nginx和apache整合起来！
　　nginx.conf如下：

• [root@qht124 conf]# cat nginx.conf
  
• user www www;
  
• worker_processes 4;
  
• 
  
• # [ debug | info | notice | warn | error | crit ]
  
• error_log /usr/local/nginx/logs/nginx_error.log crit;
  
• pid /usr/local/nginx/nginx.pid;
  
• #Specifies the value for maximum file descriptors that can be opened by this process.
  
• worker_rlimit_nofile 51200;
  
• events
  
• {
  
• use epoll;
  
• worker_connections 51200;
  
• }
  
• 
  
• http
  
• {
  
• include mime.types;
  
• default_type application/octet-stream;
  
• source_charset GB2312;
  
• server_names_hash_bucket_size 256;
  
• client_header_buffer_size 256k;
  
• large_client_header_buffers 4 256k;
  
• 
  
• #size limits
  
• client_max_body_size 50m;
  
• client_body_buffer_size 256k;
  
• client_header_timeout 3m;
  
• client_body_timeout 3m;
  
• send_timeout 3m;
  
• keepalive_timeout 120;
  
• tcp_nodelay on;
  
• 
  
• include vhosts/upstream.conf;
  
• include vhosts/www.def.com.conf;
  
• 
  
• }
  

　　在nginx的安装目录下新建一个conf目录，目录里有两个文件，分别为upstream.conf和www.def.com.conf 这两个文件的内容如下：

• [root@qht124 conf]# pwd
  
• /usr/local/nginx/conf
  
• [root@qht124 conf]# cd vhosts/
  
• [root@qht124 vhosts]# ls
  
• upstream.conf www.def.com.conf
  
• [root@qht124 vhosts]# pwd
  
• /usr/local/nginx/conf/vhosts
  
• [root@qht124 vhosts]# cat upstream.conf
  
• upstream www.def.com {
  
• server 192.168.1.9:80;
  
• }
  
• [root@qht124 vhosts]# cat www.def.com.conf
  
• server
  
• {
  
• listen 80;
  
• server_name www.def.com;
  
• charset GB2312;
  
• index index.php index.html index.htm;
  
• root /usr/vhome/d/e/f/def.com/www;
  
• 
  
• location ~ ^/NginxStatus/ {
  
• stub_status on;
  
• access_log off;
  
• }
  
• 
  
• location / {
  
• proxy_redirect off ;
  
• proxy_set_header Host $host;
  
• proxy_set_header X-Real-IP $remote_addr;
  
• proxy_set_header REMOTE-HOST $remote_addr;
  
• proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  
• client_max_body_size 50m;
  
• client_body_buffer_size 256k;
  
• proxy_connect_timeout 30;
  
• proxy_send_timeout 30;
  
• proxy_read_timeout 60;
  
• proxy_buffer_size 256k;
  
• proxy_buffers 4 256k;
  
• proxy_busy_buffers_size 256k;
  
• proxy_temp_file_write_size 256k;
  
• proxy_next_upstream error timeout invalid_header http_500 http_503 http_404;
  
• proxy_max_temp_file_size 128m;
  
• proxy_pass http://www.def.com;
  
• }
  
• 
  
• #location ~* \.(jpg|jpeg|gif|png|swf|html)$ {
  
• #if (-f $request_filename) {
  
• #root /usr/vhome/d/e/f/def.com/www;
  
• #expires 1d;
  
• #break;
  
• #} ##将这一段注释掉，则所有的访问都叫给apache去处理！否则静态文件会去执行192.168.1.2下的/usr/vhome/d/e/f/def.com/www下的内容。我在192.168.1.9的/usr/vhome/d/e/f/def.com/www下方一个index.php，在192，168.1.2的/usr/vhome/d/e/f/def.com/www下放一个a.jpg和index.html文件，然后手动运行www.def.com/index.html和www.def.com/a.jpg则会执行192.168.1.2下的内容（显然是nginx处理了静态页面）
  
• #}
  
• 
  
• log_format access '$remote_addr - $remote_user [$time_local] "$request" '
  
• '$status $body_bytes_sent "$http_referer" '
  
• '"$http_user_agent" $http_x_forwarded_for';
  
• access_log /exp/nginxlogs/www.def.com_access.log access;
  
• 
  
• }
  
• [root@qht124 vhosts]#
  

　　然后再192.168.1.9上httpd.conf中的配置如下：
　　在httpd.conf中的最后加入一句：
　　Include conf/vhost.conf
　　在/usr/local/apache2/conf目录下vhosts.conf文件内容如下：

• [root@qht2 conf]# pwd
  
• /usr/local/apache2/conf
  
• [root@qht2 conf]# cat vhost.conf
  
• NameVirtualHost *
  
• 
  
• ServerName www.def.com
  
• ScriptAlias /cgi-bin/ /usr/vhome/d/e/f/def.com/cgi-bin/
  
• DocumentRoot /usr/vhome/d/e/f/def.com/www
  
• DirectoryIndex index.html index.jsp index.php
  
• 
  
• Order allow,deny
  
• Allow from all
  
• 
  
• php_admin_value open_basedir /usr/vhome/d/e/f/def.com:/usr/vhome/tmp:/opt/tomcat/bin
  
• 
  

　　最后在一台客户端上，我的是xp系统，做本地解析，在C:\WINDOWS\system32\drivers\etc下hosts文件添加记录如下：

• 192.168.1.2 def.com
  
• 192.168.1.2 www.def.com
  

　　并在1912.168.1.9上：
　　mkdir -p /usr/vhome/d/e/f/def.com/www
　　cd /usr/vhome/d/e/f/def.com/www
　　touch index.php
　　内容为：

• [root@qht2 www]# cat index.php
  
• 
  
• [root@qht2 www]# pwd
  
• /usr/vhome/d/e/f/def.com/www
  
• [root@qht2 www]#
  

　　测试访问见附件：