Tomcat 集群配置 Session共享

最新推荐文章于 2021-03-03 10:26:17 发布
最新推荐文章于 2021-03-03 10:26:17 发布
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分类专栏： Web 文章标签： Tomcat 集群配置 Session
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在实际web应用中，会有多台服务器来部署同一套web应用，通过负载均衡来减轻用户对同一台服务器的访问压力，该部署为集群部署，在集群部署中有一个问题，为在不同的服务器上如何共享Session，此时我们通过tomcat系统内的session共享技术来实现。

tomcat 1的配置文件如下，端口号8686：

<?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. --><!-- Note: A "Server" is not itself a "Container", so you may not define 
	subcomponents such as "Valves" at this level. Documentation at /docs/config/server.html -->
<Server port="8605" shutdown="SHUTDOWN">
	<!-- Security listener. Documentation at /docs/config/listeners.html <Listener 
		className="org.apache.catalina.security.SecurityListener" /> -->
	<!--APR library loader. Documentation at /docs/apr.html -->
	<Listener SSLEngine="on"
		className="org.apache.catalina.core.AprLifecycleListener" />
	<!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
	<Listener className="org.apache.catalina.core.JasperListener" />
	<!-- Prevent memory leaks due to use of particular java/javax APIs -->
	<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
	<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
	<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />

	<!-- Global JNDI resources Documentation at /docs/jndi-resources-howto.html -->
	<GlobalNamingResources>
		<!-- Editable user database that can also be used by UserDatabaseRealm 
			to authenticate users -->
		<Resource auth="Container" description="User database that can be updated and saved"
			factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase"
			pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase" />
	</GlobalNamingResources>

	<!-- A "Service" is a collection of one or more "Connectors" that share 
		a single "Container" Note: A "Service" is not itself a "Container", so you 
		may not define subcomponents such as "Valves" at this level. Documentation 
		at /docs/config/service.html -->
	<Service name="Catalina">

		<!--The connectors can use a shared executor, you can define one or more 
			named thread pools -->
		<!-- <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="150" 
			minSpareThreads="4"/> -->


		<!-- A "Connector" represents an endpoint by which requests are received 
			and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html 
			(blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) 
			Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8686 -->
		<Connector connectionTimeout="20000" port="8686" protocol="HTTP/1.1"
			redirectPort="8443" />
		<!-- A "Connector" using the shared thread pool -->
		<!-- <Connector executor="tomcatThreadPool" port="8686" protocol="HTTP/1.1" 
			connectionTimeout="20000" redirectPort="8443" /> -->
		<!-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the 
			JSSE configuration, when using APR, the connector should be using the OpenSSL 
			style configuration described in the APR documentation -->
		<!-- <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" 
			scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" /> -->

		<!-- <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" 
			scheme="https" secure="true" keystoreFile="D:\hsinghsu.keystore" keystorePass="hsinghsu" 
			clientAuth="false" sslProtocol="TLS" /> -->

		<!-- Define an AJP 1.3 Connector on port 8609 -->
		<Connector port="8609" protocol="AJP/1.3" redirectPort="8443" />


		<!-- An Engine represents the entry point (within Catalina) that processes 
			every request. The Engine implementation for Tomcat stand alone analyzes 
			the HTTP headers included with the request, and passes them on to the appropriate 
			Host (virtual host). Documentation at /docs/config/engine.html -->

		<!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine 
			name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> -->
		<Engine defaultHost="localhost" name="Catalina">

			<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
				channelSendOptions="6">

				<Manager className="org.apache.catalina.ha.session.BackupManager"
					expireSessionsOnShutdown="false" notifyListenersOnReplication="true"
					mapSendOptions="6" />
					
				<Channel className="org.apache.catalina.tribes.group.GroupChannel">
				
					<Membership className="org.apache.catalina.tribes.membership.McastService"
						address="228.0.0.4" port="45564" frequency="500" dropTime="3000" />
						
					<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
						address="auto" port="4001" selectorTimeout="100" 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=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;" />

				<ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener" />
				
			</Cluster>

			<!--For clustering, please take a look at documentation at: /docs/cluster-howto.html 
				(simple how to) /docs/config/cluster.html (reference documentation) -->
			<!-- <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> -->

			<!-- Use the LockOutRealm to prevent attempts to guess user passwords 
				via a brute-force attack -->
			<Realm className="org.apache.catalina.realm.LockOutRealm">
				<!-- This Realm uses the UserDatabase configured in the global JNDI resources 
					under the key "UserDatabase". Any edits that are performed against this UserDatabase 
					are immediately available for use by the Realm. -->
				<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
					resourceName="UserDatabase" />
			</Realm>

			<Host appBase="webapps" autoDeploy="true" name="localhost"
				unpackWARs="true">

				<Context path="/testSession" docBase="D:\EclipseWorkspace\testSession\WebContent"
					reloadable="true" />

				<!-- SingleSignOn valve, share authentication between web applications 
					Documentation at: /docs/config/valve.html -->
				<!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" 
					/> -->

				<!-- Access log processes all example. Documentation at: /docs/config/valve.html 
					Note: The pattern used is equivalent to using pattern="common" -->
				<!-- <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" 
					pattern="%h %l %u %t "%r" %s %b" prefix="localhost_access_log." 
					suffix=".txt"/> -->
			</Host>
		</Engine>
	</Service>
</Server>
tomcat 2的配置文件如下，端口号8080： 
<?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. --><!-- Note: A "Server" is not itself a "Container", so you may not define 
	subcomponents such as "Valves" at this level. Documentation at /docs/config/server.html -->
<Server port="8005" shutdown="SHUTDOWN">
	<!-- Security listener. Documentation at /docs/config/listeners.html <Listener 
		className="org.apache.catalina.security.SecurityListener" /> -->
	<!--APR library loader. Documentation at /docs/apr.html -->
	<Listener SSLEngine="on"
		className="org.apache.catalina.core.AprLifecycleListener" />
	<!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
	<Listener className="org.apache.catalina.core.JasperListener" />
	<!-- Prevent memory leaks due to use of particular java/javax APIs -->
	<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
	<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
	<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />

	<!-- Global JNDI resources Documentation at /docs/jndi-resources-howto.html -->
	<GlobalNamingResources>
		<!-- Editable user database that can also be used by UserDatabaseRealm 
			to authenticate users -->
		<Resource auth="Container" description="User database that can be updated and saved"
			factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase"
			pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase" />
	</GlobalNamingResources>

	<!-- A "Service" is a collection of one or more "Connectors" that share 
		a single "Container" Note: A "Service" is not itself a "Container", so you 
		may not define subcomponents such as "Valves" at this level. Documentation 
		at /docs/config/service.html -->
	<Service name="Catalina">

		<!--The connectors can use a shared executor, you can define one or more 
			named thread pools -->
		<!-- <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="150" 
			minSpareThreads="4"/> -->


		<!-- A "Connector" represents an endpoint by which requests are received 
			and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html 
			(blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) 
			Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8686 -->
		<Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1"
			redirectPort="8443" />
		<!-- A "Connector" using the shared thread pool -->
		<!-- <Connector executor="tomcatThreadPool" port="8686" protocol="HTTP/1.1" 
			connectionTimeout="20000" redirectPort="8443" /> -->
		<!-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the 
			JSSE configuration, when using APR, the connector should be using the OpenSSL 
			style configuration described in the APR documentation -->
		<!-- <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" 
			scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" /> -->

		<!-- <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" 
			scheme="https" secure="true" keystoreFile="D:\hsinghsu.keystore" keystorePass="hsinghsu" 
			clientAuth="false" sslProtocol="TLS" /> -->

		<!-- Define an AJP 1.3 Connector on port 8609 -->
		<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />


		<!-- An Engine represents the entry point (within Catalina) that processes 
			every request. The Engine implementation for Tomcat stand alone analyzes 
			the HTTP headers included with the request, and passes them on to the appropriate 
			Host (virtual host). Documentation at /docs/config/engine.html -->

		<!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine 
			name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> -->
		<Engine defaultHost="localhost" name="Catalina">

			<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
				channelSendOptions="6">

				<Manager className="org.apache.catalina.ha.session.BackupManager"
					expireSessionsOnShutdown="false" notifyListenersOnReplication="true"
					mapSendOptions="6" />
					
				<Channel className="org.apache.catalina.tribes.group.GroupChannel">
				
					<Membership className="org.apache.catalina.tribes.membership.McastService"
						address="228.0.0.4" port="45564" frequency="500" dropTime="3000" />
						
					<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
						address="auto" port="4000" selectorTimeout="100" 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=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;" />

				<ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener" />
				
			</Cluster>

			<!--For clustering, please take a look at documentation at: /docs/cluster-howto.html 
				(simple how to) /docs/config/cluster.html (reference documentation) -->
			<!-- <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> -->

			<!-- Use the LockOutRealm to prevent attempts to guess user passwords 
				via a brute-force attack -->
			<Realm className="org.apache.catalina.realm.LockOutRealm">
				<!-- This Realm uses the UserDatabase configured in the global JNDI resources 
					under the key "UserDatabase". Any edits that are performed against this UserDatabase 
					are immediately available for use by the Realm. -->
				<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
					resourceName="UserDatabase" />
			</Realm>

			<Host appBase="webapps" autoDeploy="true" name="localhost"
				unpackWARs="true">

				<Context path="/testSession" docBase="D:\EclipseWorkspace2\testSession\WebContent"
					reloadable="true" />

				<!-- SingleSignOn valve, share authentication between web applications 
					Documentation at: /docs/config/valve.html -->
				<!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" 
					/> -->

				<!-- Access log processes all example. Documentation at: /docs/config/valve.html 
					Note: The pattern used is equivalent to using pattern="common" -->
				<!-- <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" 
					pattern="%h %l %u %t "%r" %s %b" prefix="localhost_access_log." 
					suffix=".txt"/> -->
			</Host>
		</Engine>
	</Service>
</Server>
其核心代码如下： 
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
				channelSendOptions="6">

	<Manager className="org.apache.catalina.ha.session.BackupManager"
		expireSessionsOnShutdown="false" notifyListenersOnReplication="true"
		mapSendOptions="6" />
		
	<Channel className="org.apache.catalina.tribes.group.GroupChannel">
	
		<Membership className="org.apache.catalina.tribes.membership.McastService"
			address="228.0.0.4" port="45564" frequency="500" dropTime="3000" />
			
		<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
			address="auto" port="4001" selectorTimeout="100" 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=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;" />

	<ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener" />
	
</Cluster>
新建一个简单的web工程，里面只有一个jsp文件，用于测试session。
test.jsp代码如下： 
<%@ page language="java" contentType="text/html; charset=utf-8"%>
<%@ page import="java.util.*"%>

<!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>Insert title here</title>
</head>
<body>

	<%
		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);
		}

		out.print("<b>Session 列表</b><br/>");
		Enumeration e = session.getAttributeNames();

		while (e.hasMoreElements()) {
			String name = (String) e.nextElement();
			String value = session.getAttribute(name).toString();
			out.println(name + " = " + value + "<br/>");
			System.out.println(name + " = " + value);
		}
	%>
	<form action="test.jsp" method="POST">
		名称:<input type=text size=20 name="dataName"> <br /> 值:<input
			type=text size=20 name="dataValue"> <br /> <input
			type=submit value="提交">
	</form>
</body>
</html>
其中web.xml代码如下： 
<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
	http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
	version="3.0">
	
	<distributable/>
</web-app>
将该web打包，分别部署在两个tomcat目录下。
在浏览器中输入 
http://localhost:8686/testSession/test.jsp
http://localhost:8080/testSession/test.jsp
分别在不同的页面设置session，即在另外一个页面可以看到该session值。

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三台服务器Tomcat集群Session共享当时查询好多的博客和文件，内附教程和java文件页面session共享和tomcat9、jDK1.8
tomcat+nginx配置session共享
03-02
tomcat配置session共享，亲试过tomcat 7.0.82版本。提供了三个依赖的jar，拷贝到tomcat的lib下面。修改content.xml文件。里面有案例。
tomcat集群session共享配置
03-27
当使用nginx反向代理时，如果配置的权衡策略是ip_hash，而ip_hash是根据ip来维持session的，这个就是会话保持。 在使用此方案时，会有一个问题，就是在调用有异步回调方法的接口时，发出请求的服务器和接到回调的服务器很可能不是同一台服务器。而此时，如果需要从session里获取东西，就会出现问题，因为另一台服务器上没有该用户的会话。
tomcat集群session共享
lilongwh59的专栏
06-04 1381
Tomcat集群session共享配置 第一步：准备工作 准备几份tomcat,比如分别叫tomcat1,tomcat2,tomcat3。。。 如果各tomcat放在不用的机器上，那么不会有端口的冲突； 如果是放在同一台机器上的话，那就简单的改几个端口，防止端口占用造成的冲突。打开conf文件夹中的server.xml文件，需要修改的端口有：
tomcat集群 session共享
jiuxiao199132的博客
04-13 340
新建tomcat_cluster文件夹解压tomcat到tomcat_cluster文件夹中，重命名为tomcat01这里用到的是 apache-tomcat-7.0.42-windows-x64.zip解压后如图 编辑tomcat配置文件 conf/server.xml找到 <Engine name="Catalina" defaultHost="localhost">不做修改在下面添加配置<C
nginx+tomcat+redis集群配置session共享解决方案
本文将详细解析“nginx+tomcat+redis集群配置session共享”的实现机制，并对给定文件信息中提及的资源文件进行知识点的展开。 ###nginx+tomcat+redis集群配置session共享 #### 关键知识点： 1. **session的概念与...
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