nginx+tomcat集群+session复制-阿里云开发者社区

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

tomcat2配置：
修改conf/server.xml配置文件

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>

本文转自 baiying 51CTO博客，原文链接：http://blog.51cto.com/baiying/731021，如需转载请自行联系原作者

nginx+tomcat集群+session复制

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