您好我是集群概念的新手,所以我尝试建立一个有 2 个实例的 Tomcat 集群。我遵循了示例,主要位于http://www.mulesoft.com/tcat/tomcat-clustering和其他一些网络资源。
我的示例设置是在workers.properties
# Define worker names
worker.list=jkstatus, loadbalancer
# Create virtual workers
worker.jkstatus.type=status
worker.loadbalancer.type=lb
# Declare Tomcat server worker 1
worker.worker1.type=ajp13
worker.worker1.host=localhost
worker.worker1.port=7009
# Declare Tomcat server worker 2
worker.worker2.type=ajp13
worker.worker2.port=9009
worker.worker2.host=localhost
# Associate real workers with virtual LoadBalancer worker
worker.loadbalancer.balance_workers=worker1,worker2
和 Apache httpd.conf 一样,
# ADDED CLUSTER CONFIG
# Load module
LoadModule jk_module modules/mod_jk.so
# Specify path to worker configuration file
JkWorkersFile C:/tomcat_clustered/workers.properties
# Configure logging and memory
JkShmFile C:/tomcat_clustered/log/location/mod_jk.shm
JkLogFile C:/tomcat_clustered/log/location/mod_jk.log
JkLogLevel info
# Configure monitoring
JkMount /jkmanager/* jkstatus
<Location /jkmanager>
Order deny,allow
deny from all
allow from localhost
</Location>
# Configure applications
JkMount /* loadbalancer
# END CLUSTER CONFIG
使用每个 tomcat(worker) server.xml 作为,
<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 BEGIN -->
<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="239.0.0.1"
port="45564" 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="auto" port="4000" autoBind="100"
selectorTimeout="5000" maxThreads="6"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
</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>
<!-- CLUSTER END -->
<!-- Use the LockOutRealm to prevent attempts to guess user passwords
via a brute-force attack -->
<Realm className="org.apache.catalina.realm.LockOutRealm">
对于工人 1,工人 2。我正在使用 Windows 7。看起来需要一些多播选项,但我不确定。在启动tomcat时,一个启动良好,在启动第二个(比如worker2)时,两个tomcat控制台都抛出错误,
at org.apache.catalina.tribes.group.ChannelInterceptorBase.heartbeat(Cha
nelInterceptorBase.java:103)
at org.apache.catalina.tribes.group.GroupChannel.heartbeat(GroupChannel.
ava:155)
at org.apache.catalina.tribes.group.GroupChannel$HeartbeatThread.run(Gro
pChannel.java:690)
ep 15, 2014 10:11:03 AM org.apache.catalina.tribes.group.interceptors.TcpFailur
Detector memberAlive
EVERE: Unable to perform failure detection check, assuming member down.
ava.net.SocketException: Permission denied: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketI
pl.java:85)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.ja
a:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocket
mpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java
不确定是由于我的 Windows 上的某些多播权限还是任何与配置相关的问题。请在这方面提出一些好的建议