Redis + Tomcat + Nginx 集群实现 Session 共享

#-- Redis data-cache configuration

#- redis hosts ex: 127.0.0.1:6379, 127.0.0.2:6379, 127.0.0.2:6380, ....
redis.hosts=127.0.0.1:6379

#- redis password (for stand-alone mode)
#redis.password=

#- set true to enable redis cluster mode
redis.cluster.enabled=false

#- redis database (default 0)
#redis.database=0

#- redis connection timeout (default 2000)
#redis.timeout=2000

1. Move the downloaded jars to tomcat/lib directory
        * tomcat/lib/

2. Add tomcat system property "catalina.base"  
        * catalina.base="TOMCAT_LOCATION"

3. Extract downloaded package (tomcat-cluster-redis-session-manager.zip) to configure Redis credentials in redis-data-cache.properties file and move the file to tomcat/conf directory
        * tomcat/conf/redis-data-cache.properties

4. Add the below two lines in tomcat/conf/context.xml
        <Valve className="tomcat.request.session.redis.SessionHandlerValve" />
        <Manager className="tomcat.request.session.redis.SessionManager" />

<?xml version="1.0" encoding="UTF-8"?>  

<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements. See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License. You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
--><!-- The contents of this file will be loaded for each web application --><Context>  

    <!-- Default set of monitored resources. If one of these changes, the -->  
    <!-- web application will be reloaded. -->  
    <WatchedResource>WEB-INF/web.xml</WatchedResource>  
    <WatchedResource>${catalina.base}/conf/web.xml</WatchedResource>  

    <!-- Uncomment this to disable session persistence across Tomcat restarts -->  
    <!--
    <Manager pathname="" />
    -->  

    <!-- Uncomment this to enable Comet connection tacking (provides events
         on session expiration as well as webapp lifecycle) -->  
    <!--
    <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />
    -->  
    <Valve className="tomcat.request.session.redis.SessionHandlerValve"/>  
    <Manager className="tomcat.request.session.redis.SessionManager"/>  

</Context>

5. Verify the session expiration time (minutes) in tomcat/conf/web.xml
        <session-config>  
            <session-timeout>60<session-timeout>  
        <session-config>

upstream myTomcatCluster{# tomcatCluster和proxy_pass保持一样
        #解决session的问题
        #ip_hash;#加上这个，解决Session每次访问页面都不一样，加上就一样了。

        #这里是tomcat的地址，weight越大，访问机率越大。
        server 127.0.0.1:9300 weight=1 fail_timeout=5s max_fails=1;
        server 127.0.0.1:9400 weight=1 fail_timeout=5s max_fails=1;
    }

location / {
            root   html;
            index  index.html index.htm;
        }

location / {
            #root html;
        proxy_pass http://myTomcatCluster;
            #index index.html index.htm;
        proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_connect_timeout       1;
            proxy_read_timeout          1;
            proxy_send_timeout          1;
        }

location / {
     proxy_pass http://myTomcatCluster;
}

proxy_connect_timeout       1;
proxy_read_timeout          1;
proxy_send_timeout          1;

cd D:\soft\nginx-1.12.2

start nginx

<Engine defaultHost="localhost" name="Catalina">

<Engine defaultHost="localhost" jvmRoute="jvm9300" name="Catalina">

<Engine defaultHost="localhost" jvmRoute="jvm9400" name="Catalina">

<%@ page language="java" contentType="text/html; charset=UTF-8"  
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>首页redis-session</title>
</head>
<body>
    <div>tomcat 集群测试</div>
    <div>
        <%
          //HttpSession session = request.getSession(true);
          System.out.println(session.getId());
          out.println("<br> SESSION ID:" + session.getId()+"<br>");
        %>
    </div>
</body>
</html>

out.println("<br> SESSION ID:" + session.getId()+"<br>");

tomcat 集群测试

SESSION ID:B837ECA85B47081EAA2FEFCD7E579CD2.jvm9400

<Engine defaultHost="localhost" jvmRoute="jvm9400" name="Catalina">

tomcat 集群测试

SESSION ID:83BBA58F4EB7B2EFF90AE05D4A0629FD.jvm9300