session共享之nginx+tomcat+redis

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环境
centos6.4
nginx :192.168.44.137
tomcat1 :192.168.44.137
tomcat2 :192.168.44.139
redis :192.168.44.137
相关安装包：http://download.csdn.net/detail/tshangshi/9644017
nginx在前端做负载均衡，转发给后端tomcat进行处理，session存在reids服务器，实现session共享

redis

1.安装redis

# tar xvzf redis-stable.tar.gz
# cd redis-stable
# make

2.修改配置文件

# vim redis.conf

bind 192.168.44.137  #绑定的主机地址daemonize yes       #以守护进程的方式运行

3.运行redis-server

# cd src && ./redis-server ../redis.conf

Nginx做负载均衡

# vim /etc/nginx/nginx.conf

upstream mytest.com {        server 192.168.44.137:8080;        server 192.168.44.139:8080;    }    server {        listen       80;        server_name  www.nginx2.com;        index index.jsp index.html index.htm;        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;            proxy_pass http://mytest.com;            proxy_cookie_path /nginx2/ /;        }

Tomcat

1.下载依赖jar包,放在 $TOMCAT_HOME/lib 目录下
tomcat-redis-session-manager-VERSION.jar
jedis-2.5.2.jar
commons-pool2-2.2.jar
2.context.xml（两个tomcat配置相同）

# vim $TOMCAT_HOME/conf/context.xml
添加

    <Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />    <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"              host="192.168.44.137"              port="6379"              database="0"              maxInactiveInterval="60" />

3.server.xml

# vim $TOMCAT_HOME/conf/server.xml

tomcat1：

<Engine name="Catalina" defaultHost="192.168.44.137" jvmRoute="tomcat1"><Host name="192.168.44.137"  appBase="webapps"            unpackWARs="true" autoDeploy="true">      <Context path="" reloadable="true" docBase="/opt/rtomcat/webapps/test/" />

tomcat2：

<Engine name="Catalina" defaultHost="192.168.44.139" jvmRoute="tomcat2"><Host name="192.168.44.139"  appBase="webapps"            unpackWARs="true" autoDeploy="true">      <Context path="" reloadable="true" docBase="/opt/rtomcat/webapps/test/" />

4.测试页面 /opt/rtomcat/webapps/test/index.jsp

<%@ page contentType="text/html; charset=UTF-8" %><%@ page import="java.util.*" %><html><head><title>Tomcat Cluster Demo</title></head><body>Server Info:<%out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"<br>");%><%  out.println("<br> ID " + session.getId()+"<br>");  String dataName = request.getParameter("dataName");  if (dataName != null && dataName.length() > 0) {     String dataValue = request.getParameter("dataValue");     session.setAttribute(dataName, dataValue);     System.out.println("application:" + application.getAttribute(dataName));     application.setAttribute(dataName, dataValue);  }  out.print("<b>Session List</b>");  Enumeration<String> e = session.getAttributeNames();  while (e.hasMoreElements()) {     String name = e.nextElement();     String value = session.getAttribute(name).toString();     out.println( name + " = " + value+"<br>");         System.out.println( name + " = " + value);   }%>    <form action="index.jsp" method="POST">        Name:<input type=text size=20 name="dataName">        <br>        Value:<input type=text size=20 name="dataValue">        <br>        <input type=submit>    </form></body></html>

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