nginx+tomcat集群+session复制

当然，所有下面这些都来源 tomcat官方文档，！
所以看官方文档，最好！！！！
上面的配置是在两台不同的配置上进行，tomcat负载和session复制都成功了。但是如果在同一台机子上配置，则session复制总是不能成功，搜索了很多解决方式都不正确。

http://jackandroid.iteye.com/blog/627147
另外一篇好文：

apache2.2.16+mod_jk.1.2.30+tomcat7.0.2集群session复制
http://wenku.baidu.com/view/380b95f69e3143323968937e.html

原文：http://baiying.blog.51cto.com/1068039/731021
ulimit -SHn 65535 
echo "ulimit -SHn 65535" >>/etc/rc.local

环境： 
redhat5.4、pcre-8.12、nginx-upstream-jvm-route-0.1、nginx-1.0.5、apache-tomcat-6.0.33 
nginx服务器地址：192.168.0.40 
tomcat1:192.168.0.20 
tomcat2:192.168.0.30

拓扑如下：
 

 

1.安装nginx

tar zxf pcre-8.12.tar.gz 
cd pcre-8.12 
./configure 
make;make install

下载下面的插件安装，否则nginx无法识别tomcat中jvmRoute，从而无法达到session复制的效果。

wget  http://friendly.sinaapp.com//LinuxSoft/nginx-upstream-jvm-route-0.1.tar.gz 
tar xzf nginx-upstream-jvm-route-0.1.tar.gz 
tar xzf nginx-1.0.5.tar.gz 
cd nginx-1.0.5 
patch -p0 <../nginx_upstream_jvm_route/jvm_route.patch 
/configure --prefix=/usr/local/nginx --with-http_stub_status_module  --with-pcre=/root/pcre-8.12 --add-module=../nginx_upstream_jvm_route/ 
#--with-pcre=指向的是pcre的源码包 
make;make install

2.配置nginx

vim /usr/local/nginx/conf/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        /usr/local/nginx/logs/nginx.pid; 
worker_rlimit_nofile 51200;

events { 
    worker_connections  5000; 
}

http { 
  upstream backend { 
    server 192.168.0.20:8080 srun_id=tomcat1; //在tomcat的配置里会配置jvmRoute为tomcat1
    server 192.168.0.30:8080 srun_id=tomcat2; 
    jvm_route $cookie_JSESSIONID|sessionid reverse; 
  }

include       mime.types; 
default_type  application/octet-stream; 
#charset  gb2312; 
charset UTF-8; 
server_names_hash_bucket_size 128; 
client_header_buffer_size 32k; 
large_client_header_buffers 4 32k; 
client_max_body_size 20m; 
limit_rate  1024k; 
sendfile on; 
tcp_nopush     on; 
keepalive_timeout 60; 
tcp_nodelay on; 
fastcgi_connect_timeout 300; 
fastcgi_send_timeout 300; 
fastcgi_read_timeout 300; 
fastcgi_buffer_size 64k; 
fastcgi_buffers 4 64k; 
fastcgi_busy_buffers_size 128k; 
fastcgi_temp_file_write_size 128k; 
gzip on; 
#gzip_min_length  1k; 
gzip_buffers     4 16k; 
gzip_http_version 1.0; 
gzip_comp_level 2; 
gzip_types       text/plain application/x-javascript text/css application/xml; 
gzip_vary on;

server 
{ 
   listen       80; 
   server_name  www.baiying.com; 
   index index.jsp index.htm index.html; 
   root  /usr/www;

   location /  { 
     proxy_pass   http://backend; 
     proxy_redirect    off; 
     proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for; 
     proxy_set_header  X-Real-IP  $remote_addr; 
     proxy_set_header  Host $http_host; 
   } 
   location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ 
   { 
     expires      30d; 
   } 
   location ~ .*\.(js|css)?$ 
   { 
     expires      1h; 
   } 
   location /Nginxstatus { 
     stub_status on; 
     access_log   off; 
   } 
  log_format  access  '$remote_addr - $remote_user [$time_local] "$request" ' 
             '$status $body_bytes_sent "$http_referer" ' 
             '"$http_user_agent" $http_x_forwarded_for';

} 
} 
                                                                                                          
[root@slave conf]# /usr/local/bin/nginx.sh stop 
[root@slave conf]# /usr/local/bin/nginx.sh start 
 

3.安装tomcat 
1）安装tomcat_1 
tar zxf apache-tomcat-6.0.33.tar.gz 
mv apache-tomcat-6.0.33/usr/local/tomcat 
cp tomcat-replication.jar /usr/local/tomcat/lib 
2）安装tomcat_2，步骤同1）

4.分别在tomcat服务器安装jdk

chmod 755 jdk-6u26-linux-i586-rpm.bin 
./jdk-6u26-linux-i586-rpm.bin

cat >>/etc/profile <<EOF
export JAVA_HOME=/usr/java/jdk1.6.0_26 
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib 
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH:$HOMR/bin

EOF;

source /etc/profile  //使环境变量立即生效

5.tomcat集群配置 
tomcat1配置： 
修改conf/server.xml配置文件

    &lt;Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1"> 
        <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" 
                 channelSendOptions="8"> 
          <Manager className="org.apache.catalina.ha.session.DeltaManager" 
                   expireSessionsOnShutdown="false" 
                   notifyListenersOnReplication="true"/> 
          <Channel className="org.apache.catalina.tribes.group.GroupChannel"> 
            <Membership className="org.apache.catalina.tribes.membership.McastService" 
                        address="224.0.0.4" 
                        port="45564" 
                        frequency="500" 
                        dropTime="3000"/> 
            <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" 
                      address="192.168.0.20" 
                      port="4001" 
                      autoBind="100" 
                      selectorTimeout="5000" 
                      maxThreads="6"/> 
            <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> 
              <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender" /> 
            </Sender> 
            <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> 
            <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> 
         <Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/> 
          </Channel> 
          <Valve className="org.apache.catalina.ha.tcp.ReplicationValve" 
                 filter=""/> 
          <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/> 
          <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" 
                    tempDir="/tmp/war-temp/" 
                    deployDir="/tmp/war-deploy/" 
                    watchDir="/tmp/war-listen/" 
                    watchEnabled="false"/> 
          <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> 
          <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> 
        </Cluster> 

tomcat2配置： 
修改conf/server.xml配置文件

    <Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2"> 
        <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" 
                 channelSendOptions="8"> 
          <Manager className="org.apache.catalina.ha.session.DeltaManager" 
                   expireSessionsOnShutdown="false" 
                   notifyListenersOnReplication="true"/> 
          <Channel className="org.apache.catalina.tribes.group.GroupChannel"> 
            <Membership className="org.apache.catalina.tribes.membership.McastService" 
                        address="224.0.0.4" 
                        port="45564" 
                        frequency="500" 
                        dropTime="3000"/> 
            <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" 
                      address="192.168.0.30" 
                      port="4000" 
                      autoBind="100" 
                      selectorTimeout="5000" 
                      maxThreads="6"/> 
            <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> 
              <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender" /> 
            </Sender> 
            <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> 
            <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> 
         <Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/> 
          </Channel> 
          <Valve className="org.apache.catalina.ha.tcp.ReplicationValve" 
                 filter=""/> 
          <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>

          <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" 
                    tempDir="/tmp/war-temp/" 
                    deployDir="/tmp/war-deploy/" 
                    watchDir="/tmp/war-listen/" 
                    watchEnabled="false"/> 
          <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> 
          <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> 
        </Cluster>

6.session配置

修改web应用里面WEB-INF目录下的web.xml文件，加入标签 
<distributable/> 
直接加在</web-app>之前 
开启网卡组播功能： 
route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0

7.创建jsp测试页面 
在tomcat1安装路径下建立目录test 
mkdir /usr/local/tomcat/webapps/ROOT/test/ 
vi index.jsp 
<html> 
<title> 
tomcat1 jsp 
</title> 
<% 
   String showMessage="Oh My God 192.168.0.20 华仔!"; 
   out.print(showMessage); 
%> 
</html> 
---------------------------- 
在tomcat2安装路径下建立目录test 
mkdir /usr/local/tomcat/webapps/ROOT/test/ 
vi index.jsp 
<html> 
<title> 
tomcat2 jsp 
</title> 
<% 
   String showMessage="Oh My God 192.168.0.30 华仔!"; 
   out.print(showMessage); 
%> 
</html>