本文是接上面文章所做的tomcat羣集,以及session的複製
環境:centos5.4 apache2.2 tomcat6.0 jk1.3
目的:單機上2個tomcat做到負載均衡並且session在多個tomcat之間複製
1 修改server.xml配置文件(直接貼我自己的)
- tomcat1的配置文件
- <?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">
- <!--APR library loader. Documentation at /docs/apr.html -->
- <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
- <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
- <Listener className="org.apache.catalina.core.JasperListener" />
- <!-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html -->
- <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
- <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
- <!-- 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 name="UserDatabase" auth="Container"
- type="org.apache.catalina.UserDatabase"
- description="User database that can be updated and saved"
- factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
- pathname="conf/tomcat-users.xml" />
- </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 8080
- -->
- <Connector port="8080" protocol="HTTP/1.1"
- connectionTimeout="20000"
- redirectPort="8443" />
- <!-- A "Connector" using the shared thread pool-->
- <!--
- <Connector executor="tomcatThreadPool"
- port="8080" 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" />
- -->
- <!-- Define an AJP 1.3 Connector on port 8009 -->
- <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 name="Catalina" defaultHost="localhost" jvmRoute="worker1">
- <!--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"/>
- -->
- <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="228.0.0.4"
- port="45564"
- frequency="500"
- dropTime="3000"/>
- <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
- address="auto"
- port="4001"
- autoBind="100"
- selectorTimeout="5000"
- maxThreads="6"/>
- <!-- timeout="60000"-->
- <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"/>
- <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
- <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
- </Cluster>
- <!-- The request dumper valve dumps useful debugging information about
- the request and response data received and sent by Tomcat.
- Documentation at: /docs/config/valve.html -->
- <!--
- <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
- -->
- <!-- 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"/>
- <!-- Define the default virtual host
- Note: XML Schema validation will not work with Xerces 2.2.
- -->
- <Host name="localhost" appBase="webapps"
- unpackWARs="true" autoDeploy="true"
- xmlValidation="false" xmlNamespaceAware="false">
- <Context path="" docBase="/opt/webapps/test1" debug="0" reloadable="true" crossContext="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 -->
- <!--
- <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
- prefix="localhost_access_log." suffix=".txt" pattern="common" resolveHosts="false"/>
- -->
- </Host>
- </Engine>
- </Service>
- </Server>
- tomcat2的配置文件
- <?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="18005" shutdown="SHUTDOWN">
- <!--APR library loader. Documentation at /docs/apr.html -->
- <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
- <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
- <Listener className="org.apache.catalina.core.JasperListener" />
- <!-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html -->
- <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
- <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
- <!-- 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 name="UserDatabase" auth="Container"
- type="org.apache.catalina.UserDatabase"
- description="User database that can be updated and saved"
- factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
- pathname="conf/tomcat-users.xml" />
- </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 8080
- -->
- <Connector port="18080" protocol="HTTP/1.1"
- connectionTimeout="20000"
- redirectPort="8443" />
- <!-- A "Connector" using the shared thread pool-->
- <!--
- <Connector executor="tomcatThreadPool"
- port="8080" 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" />
- -->
- <!-- Define an AJP 1.3 Connector on port 8009 -->
- <Connector port="18009" 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 name="Catalina" defaultHost="localhost" jvmRoute="worker2">
- <!--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"/>
- -->
- <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="228.0.0.4"
- port="45564"
- frequency="500"
- dropTime="3000"/>
- <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
- address="auto"
- port="4002"
- autoBind="100"
- selectorTimeout="5000"
- maxThreads="6"/>
- <!-- timeout="60000"-->
- <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"/>
- <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
- <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
- </Cluster>
- <!-- The request dumper valve dumps useful debugging information about
- the request and response data received and sent by Tomcat.
- Documentation at: /docs/config/valve.html -->
- <!--
- <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
- -->
- <!-- 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"/>
- <!-- Define the default virtual host
- Note: XML Schema validation will not work with Xerces 2.2.
- -->
- <Host name="localhost" appBase="webapps"
- unpackWARs="true" autoDeploy="true"
- xmlValidation="false" xmlNamespaceAware="false">
- <Context path="" docBase="/opt/webapps/test1" debug="0" reloadable="true" crossContext="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 -->
- <!--
- <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
- prefix="localhost_access_log." suffix=".txt" pattern="common" resolveHosts="false"/>
- -->
- </Host>
- </Engine>
- </Service>
- </Server>
2 http下配置
workers.properties配置
- worker.list=controller
- worker.worker1.type=ajp13
- worker.worker1.host=localhost
- worker.worker1.port=8009
- worker.worker1.lbfactor=1
- worker.worker1.cachesize=10
- worker.worker1.cache_timeout=600
- worker.worker1.socket_keepalive=1
- worker.worker1.socket_timeout=300
- worker.worker2.type=ajp13
- worker.worker2.host=localhost
- worker.worker2.port=18009
- worker.worker2.lbfactor=1
- worker.worker2.cachesize=10
- worker.worker2.cache_timeout=600
- worker.worker2.socket_keepalive=1
- worker.worker2.socket_timeout=300
- worker.controller.type=lb
- worker.retries=3
- worker.controller.balance_workers=worker1,worker2
worker.controller.method=B
# 如何選擇最優的worker, B[usyness]: 選最不忙的, R[equest]: 缺省
worker.controller.sticky_session=0- worker.controller.sticky_session_force=0
#ticky_session sticky_session_force 含義
# true false SESSION會複製,有粘性
# true true SESSION不復制,有粘性
# false false SESSION會複製,無粘性
# false true SESSION會複製,無粘性
# *注意* worker.controller.sticky_session=1,等同於worker.controller.sticky_session=true.此處指定集羣是否需要會話複製,
#如果設爲true,則表明爲會話粘性,不進行會話複製,當某用戶的請求第一次分發到哪臺Tomcat後,後繼的請求會一直分發到此
#Tomcat服務器上處理;如果設爲false,則表明需求會話複製。這就是說,如果你要想進行均衡負載,並在192.168.1.5和192.168.1.3
#兩臺機器的Tomcat實例上實現集羣全局session複製,此處值要設置成false。
#sticky_session 1: True, otherwise False, 相同session id一直訪問同一服務器
#sticky_session_force session id出錯狀態不返回500(Server Error), 由另一worker接手
配置uriworkermap.properties
- JkMount /servlet/* controller
- JkMount /*.jsp controller
配置httpd.vhost.conf
- NameVirtualHost *:80
- <VirtualHost *:80>
- ServerAdmin [email protected]
- DirectoryIndex index.html index.htm index.jsp
- DocumentRoot "/opt/webapps/test1"
- ServerName localhost
- ErrorLog "logs/dummy-host.example.com-error_log"
- CustomLog "logs/dummy-host.example.com-access_log" common
- Include /usr/local/apache/conf/uriworkermap.properties
- <Directory "/opt/webapps/test1">
- Options Indexes FollowSymLinks
- AllowOverride None
- Order allow,deny
- Allow from all
- </Directory>
- </VirtualHost>
3 測試負載均衡
寫一個 jsp 來進行測試
- <%
- out.println( "Hello, www.17rumen.com" );
- System.out.println( "========== test ========" );
- %>
刷新這個頁面(可以換瀏覽器刷新),然後查看
/usr/local/tomcat1/logs/catalina.out
/usr/local/tomcat2/logs/catalina.out
可以看到2邊都會出現========== test ========
說明負載成功
4 測試session複製
建一個index.jsp
- <%@ page contentType="text/html; charset=GBK" %>
- <%@ page import="java.util.*" %>
- <html><head><title>Cluster App Test</title></head>
- <body>
- Server Info:
- <%
- out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"<br>");%>
- <%
- out.println("<br> ID " + session.getId()+"<br>"); // 如果有新的 Session 屬性設置
- 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>"); 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="index.jsp" method="POST">
- 名稱:<input type=text size=20 name="dataName">
- <br>
- 值:<input type=text size=20 name="dataValue">
- <br>
- <input type=submit>
- </form>
- </body>
- </html>
- 建立/opt/webapps/test1/WEB-INF文件夾
新建web.xml文件
內容如下- <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
- <display-name>TomcatDemo</display-name>
- <distributable/>
- </web-app>
注意:在應用的web.xml加入 <distributable/> 即可
然後打開首頁同時觀察tomcat的日誌,可以發現tomcat1在運行這個頁面,同時記錄了session,然後你停止 tomcat1,會刷新頁面你會發現tomcat2依舊保存這個session,說明tomcat1和2session之間是複製了