nginx+多个tomcat的负载均衡

本文介绍如何通过Nginx实现Tomcat服务器集群的负载均衡,并详细记录了安装配置过程,包括DNS配置、JDK安装、Tomcat设置等步骤。

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转自:http://www.open-open.com/lib/view/open1394854254103.html

tomcat处理文件扩展名为.jsp,.do的请求

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网络架构
nginx主机:10.10.54.87
tomcat主机1:10.10.54.87
tomcat主机2:10.10.54.87
 
(1)安装nginx-1.4.5
[root@nan87 lnmp] # tar xvf nginx-1.4.5.tar.gz
[root@nan87 lnmp] # cd nginx-1.4.5
[root@nan87 nginx-1.4.5] # ./configure --prefix=/usr/local/nginx --user=apache --group=apache --with-http_stub_status_module   --with-http_gzip_static_module --with-http_ssl_module
[root@nan87 nginx-1.4.5] # make && make install
[root@nan87 nginx-1.4.5] # /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
             --启动nginx
(2)配置DNS
[root@nan87 ~] # vim /etc/named.conf
options {
         listen-on port 53 { any; };
         directory        "/var/named" ;
         dump- file       "/var/named/data/cache_dump.db" ;
         statistics- file "/var/named/data/named_stats.txt" ;
         memstatistics- file "/var/named/data/named_mem_stats.txt" ;
         allow-query     { any; };
         recursion  yes ;
};
 
logging {
         channel default_debug {
                 file "data/named.run" ;
                 severity dynamic;
         };
};
 
zone  "." IN {
         type hint;
         file "named.ca" ;
};
zone  "dogs.com" IN {
         type master;
         file "named.dogs.com" ;
}; 
 
[root@nan87 ~] # vim /var/named/named.dogs.com
$TTL    600
@       IN      SOA     dogs.com.        root (2014030401 1H 15M 1W 1D);
@       IN      NS      dogs.com.
dogs.com.        IN      A       10.10.54.87
www.dogs.com.    IN      A       10.10.54.87
bbs.dogs.com.    IN      A       10.10.54.87
hr.dogs.com.     IN      A       10.10.54.87
 
(3)安装JDK
[root@nan87 lnmp] # rpm -ivh jdk-7u51-linux-x64.rpm
[root@nan87 lnmp] # rpm -ql jdk-1.7.0_51-fcs.x86_64
--查看JDK的安装路径
/usr/java/jdk1 .7.0_51
 
(4)安装配置tomcat
[root@nan87 lnmp] # tar xvf apache-tomcat-7.0.52.tar.gz
[root@nan87 lnmp] # mv apache-tomcat-7.0.52 /usr/local/tomcat
 
// 给tomcat添加JAVA主目录,在96行添加
[root@nan87 lnmp] # vim /usr/local/tomcat/bin/catalina.sh
JAVA_HOME= /usr/java/jdk1 .7.0_51
CATALINA_HOME= /usr/local/tomcat
 
// 做启动脚本
[root@nan87 lnmp] # cd /usr/local/tomcat/bin/
[root@nan87 bin] # cp catalina.sh /etc/init.d/tomcat
[root@nan87 bin] # vim /etc/init.d/tomcat
#chkconfig: 2375 74 76
#description:tomcat start stop
[root@nan87 bin] # chmod +x /etc/init.d/tomcat
 
(5)第二台tomcat
[root@nan87 lnmp] # tar xvf apache-tomcat-7.0.52.tar.gz
[root@nan87 lnmp] # mv apache-tomcat-7.0.52 /usr/local/tomcat2
// 给tomcat添加JAVA主目录,在96行添加
[root@nan87 lnmp] # vim /usr/local/tomcat2/bin/catalina.sh
JAVA_HOME= /usr/java/jdk1 .7.0_51
CATALINA_HOME= /usr/local/tomcat2
// 做启动脚本
[root@nan87 lnmp] # cd /usr/local/tomcat2/bin/
[root@nan87 bin] # cp catalina.sh /etc/init.d/tomcat2
[root@nan87 bin] # vim /etc/init.d/tomcat2
#chkconfig: 2355 73 75
#description:tomcat start stop
[root@nan87 bin] # chmod +x /etc/init.d/tomcat
 
// 更改配置
[root@nan87 lnmp] # cd /usr/local/tomcat2
// 更改三个端口
[root@nan87 tomcat2] # vim conf/server.xml
##将8005改为其他,如:9005
  <Server port= "8005" shutdown = "SHUTDOWN" >
##将8080改为其他,如:9090
  <Connector port= "8080" protocol= "HTTP/1.1"
##将8009改为其他,如:9009
  <Connector port= "8009" protocol= "AJP/1.3" redirectPort= "8443" />
 
[root@nan87 ~] # mkdir -p /var/www/
[root@nan87 ~] # cd /var/www/
[root@nan87 www] # mkdir ROOT        --注意必须是ROOT
[root@nan87 www] # cd ROOT/
[root@nan87 html] # echo "Hello10.10.54.87" >index.jsp
[root@nan87 html] # vim /usr/local/tomcat2/conf/server.xml
  <Host name= "localhost"  appBase= "/var/www"
         --appBase地址更改
(6)更改nginx配置
[root@nan87 html] # vim /usr/local/nginx/conf/nginx.conf
user apache apache;
worker_processes  2;
events {
     worker_connections  1024;
}
http {
     include       mime.types;
     default_type  application /octet-stream ;
     sendfile        on;
     keepalive_timeout  65;
             --添加下面内容
     upstream  www.dogs.com  {
                server   10.10.54.87:8080  weight=1;
                server   10.10.54.87:9090  weight=1;
        }
     server {
         listen       80;
         server_name  www.dogs.com;
         root  /var/www/html ;
         index index.html index.htm index.jsp;
         location / {
         proxy_pass        http: //www .dogs.com;
         proxy_set_header   Host             $host;
         proxy_set_header   X-Real-IP        $remote_addr;
         proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
         }
          location ~ .*.jsp$ {
         index index.jsp;
         proxy_pass http: //localhost :8080;
         }
         location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ {
         expires      30d;
         }
         location ~ .*\.(js|css)?$ {
         expires      1h;
         }
         error_page   500 502 503 504   /50x .html;
         location =  /50x .html {
             root   html;
         }
     }
}
 
(7)测试
在浏览器中输入“http: //www .dogs.com/”
刷新页面会有变化
 
 
 
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