【问题标题】:Tomcat clustering - configuring 2 tomcats on different machinesTomcat集群——在不同机器上配置2个tomcat
【发布时间】:2013-10-30 08:48:20
【问题描述】:

我正在尝试创建一个 tomcat 集群以复制会话。

我的 2 个 tomcat 存在于两台不同的机器上,

所有可用示例均显示同一台机器上的 2 个 tomcat 集群。

tomcat的ips在配置文件哪里配置?

(目前当我使用默认配置时,我得到了错误:“

Oct 30, 2013 10:21:03 AM org.apache.catalina.ha.session.DeltaManager getAllClusterSessions
INFO: Manager [localhost#/HATest]: skipping state transfer. No members active in cluster group."

谢谢!

编辑:我的(默认且不那么有趣)server.xml:

<?xml version='1.0' encoding='utf-8'?>

  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" />
   -->

<!--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">
 <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
  <!--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 name="localhost"  appBase="webapps"
        unpackWARs="true" autoDeploy="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"
           prefix="localhost_access_log." suffix=".txt"
           pattern="%h %l %u %t &quot;%r&quot; %s %b" />

  </Host>
</Engine>

【问题讨论】:

  • 提供您的 server.xml 文件。还要解释一下您是如何尝试集群的?
  • 我只是尝试快速集群,因为我知道我不会为不在同一台机器上的 2 个 tomcat 工作。

标签: session tomcat session-replication


【解决方案1】:

要让默认集群配置在多台机器之间工作,多播需要工作。如果每个节点都看不到,那么很可能是多播未在一个或多个机器中启用/在网络级别被阻止/机器位于不同的子网上。

在这种情况下,您可以使用静态成员身份显式定义集群中的其他机器。详情请见Tomcat clustering docs

【讨论】:

    【解决方案2】:

    &lt;Host&gt;&lt;/Host&gt;内部,需要做聚类。

    利用下面的例子来修改你的server.xml:

    <Host name="site1.mydomain.net" debug="0" appBase="webapps" unpackWARs="true" autoDeploy="true">
    <Logger className="org.apache.catalina.logger.FileLogger" directory="logs" prefix="virtual_log1." suffix=".log" timestamp="true"/>
    <Context path="" docBase="/usr/share/tomcat/webapps/myapp" debug="0" reloadable="true"/>
    
    <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster">
    <Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true"/>
    
            <Channel className="org.apache.catalina.tribes.group.GroupChannel">
                <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                      address="10.99.60.170"
                      port="8082"
                      selectorTimeout="100"
                      maxThreads="6"/>
                <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
    
                <Interceptor className="org.apache.catalina.tribes.group.interceptors.StaticMembershipInterceptor">
                    <Member className="org.apache.catalina.tribes.membership.StaticMember"
                          port="8083"
                          securePort="-1"
                          host="10.99.60.172"
                          domain="staging-cluster"
                          uniqueId="{0,1,2,3,4,5,6,7,8,9}"/>
    
                </Interceptor>
            </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"/>
    
      <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
                tempDir="/usr/share/tomcat/temp/"
                deployDir="/usr/share/tomcat/webapps/"
                watchDir="/usr/share/tomcat/watch/"
                watchEnabled="true"/>
    
    </Cluster>
    </Host>
    

    【讨论】:

    • 你能解释一下我在你的xml中看到的不同ip吗?收件人地址和会员主机有什么区别?
    【解决方案3】:

    尝试使用 server.xml 下面的配置

    <?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="8006" shutdown="SHUTDOWN">
      <!-- TomEE plugin for Tomcat -->
      <Listener className="org.apache.tomee.catalina.ServerListener" />
      <!-- Security listener. Documentation at /docs/config/listeners.html
      <Listener className="org.apache.catalina.security.SecurityListener" />
      -->
      <!--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" />
      <!-- 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 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="8082" 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="8011" 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="tomcat2">
    
          <!--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="45566"
                                            frequency="500"
                                            dropTime="3000"/>
    
                    <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
                            <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
                    </Sender>
    
                    <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                                            address="172.16.17.244"
                                            port="4002"
                                            autoBind="100"
                                            selectorTimeout="5000"
                                            maxThreads="6"/>
    
                    <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.StaticMembershipInterceptor">
                        <Member className="org.apache.catalina.tribes.membership.StaticMember"
                              port="4001"
                              securePort="-1"
                              host="192.168.80.128"
                              domain="staging-cluster"
                              uniqueId="{0,1,2,3,4,5,6,7,8,9}"/>
                    </Interceptor>
    
            </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>
    
          <!-- 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 name="localhost"  appBase="webapps"
                unpackWARs="true" autoDeploy="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"
                   prefix="localhost_access_log." suffix=".txt"
                   pattern="%h %l %u %t &quot;%r&quot; %s %b" />
    
          </Host>
        </Engine>
      </Service>
    </Server>
    

    在这个xml中请参考下面的标签...

            <Interceptor className="org.apache.catalina.tribes.group.interceptors.StaticMembershipInterceptor">
                <Member className="org.apache.catalina.tribes.membership.StaticMember"
                      **port="4001"**
                      securePort="-1"
                      **host="192.168.80.128"**
                      domain="staging-cluster"
                      uniqueId="{0,1,2,3,4,5,6,7,8,9}"/>
            </Interceptor>
    

    在这 host = 在另一台机器上运行的 tomcat 的系统 ip 和 port = 在另一台机器上运行的 tomcat 的接收器端口

    在下面的接收者标签中...

    <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                                        address="172.16.17.244"
                                        port="4002"
                                        autoBind="100"
                                        selectorTimeout="5000"
                                        maxThreads="6"/>
    

    address = 是当前机器的ip地址

    在当前机器上运行的tomcat的server.xml中进行上述更改。

    需要在其他机器上运行的tomcat的server.xml中做类似的修改;只有系统 ips 和端口会改变。

    希望对你有所帮助..

    【讨论】:

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