FYI - running one of the instances in a VMWare virtual machine works fine. Mitch
Mitch Claborn wrote: > Yes to both questions. What a bummer. I'll try running the second > instance on a VM an see what happens. > > Mitch > > > Filip Hanik - Dev Lists wrote: > >> Wait a second, are both your instances on the same machine? Are you >> running Apache Tomcat 6.0.20 >> there was a serious regression, with the loopback turned off. >> >> https://issues.apache.org/bugzilla/show_bug.cgi?id=47308 >> >> Filip >> >> On 07/17/2009 08:54 AM, Mitch Claborn wrote: >> >>> ping 224.0.0.1 >>> PING 224.0.0.1 (224.0.0.1) 56(84) bytes of data. >>> 64 bytes from 192.168.3.254: icmp_seq=1 ttl=255 time=0.895 ms >>> 64 bytes from 192.168.3.254: icmp_seq=2 ttl=255 time=0.693 ms >>> 64 bytes from 192.168.3.254: icmp_seq=3 ttl=255 time=0.686 ms >>> >>> >>> Mitch >>> >>> >>> Filip Hanik - Dev Lists wrote: >>> >>> >>>> correct, you're members are not discovering each other. >>>> and its purely multicast related. >>>> >>>> what do you get when you do >>>> >>>> ping 224.0.0.1 >>>> >>>> Filip >>>> >>>> On 07/16/2009 05:16 PM, Mitch Claborn wrote: >>>> >>>> >>>>> Not having much luck getting a simple cluster to work. Using >>>>> nginx as >>>>> a front end/load balancer against two tomcat instances on the same >>>>> machine (for now). SuSE Linux 11.1. I see this message in the >>>>> startup >>>>> log, making me think the tomcat instances are not talking: >>>>> >>>>> INFO: Manager [localhost#/Struts1]: skipping state transfer. No >>>>> members >>>>> active in cluster group. >>>>> >>>>> I have a simple test page in the web app that shows the session ID and >>>>> the instance of tomcat that it is hitting (by server port number) and >>>>> the session id changes whenever ngnix directs the request to a >>>>> different >>>>> instance. >>>>> >>>>> as far as I can tell, multicast is enabled on eth0: >>>>> eth0 Link encap:Ethernet HWaddr 00:1D:09:C4:C2:9A >>>>> inet addr:192.168.3.5 Bcast:192.168.3.255 >>>>> Mask:255.255.255.0 >>>>> inet6 addr: fe80::21d:9ff:fec4:c29a/64 Scope:Link >>>>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 >>>>> >>>>> I've added a route for the mulitcast address to eth0: >>>>> Kernel IP routing table >>>>> Destination Gateway Genmask Flags Metric Ref >>>>> Use >>>>> Iface >>>>> 228.0.0.4 0.0.0.0 255.255.255.255 UH 0 0 >>>>> 0 eth0 >>>>> 192.168.3.0 0.0.0.0 255.255.255.0 U 1 0 >>>>> 0 eth0 >>>>> 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 >>>>> 0 lo >>>>> 0.0.0.0 192.168.3.254 0.0.0.0 UG 0 0 >>>>> 0 eth0 >>>>> >>>>> localhost is mapped to the eth0 interface: >>>>> ping localhost >>>>> PING mlcx300 (192.168.3.5) 56(84) bytes of data. >>>>> 64 bytes from mlcx300 (192.168.3.5): icmp_seq=1 ttl=64 time=0.046 ms >>>>> >>>>> >>>>> >>>>> I've tried the simple config: >>>>> <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> >>>>> >>>>> as well as the detailed config below. Any pointers or ideas are >>>>> welcome. >>>>> >>>>> <Cluster >>>>> className="org.apache.catalina.ha.tcp.SimpleTcpCluster" >>>>> channelSendOptions="6"> >>>>> >>>>> <Manager >>>>> className="org.apache.catalina.ha.session.DeltaManager" >>>>> name="MMClusterManatger" >>>>> 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="5000" >>>>> autoBind="100" >>>>> selectorTimeout="100" >>>>> minThreads="2" >>>>> maxThreads="6"/> >>>>> >>>>> <Sender >>>>> className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> >>>>> >>>>> <Transport >>>>> className="org.apache.catalina.tribes.transport.nio.PooledParallelSender" >>>>> >>>>> >>>>> poolSize="25"/> >>>>> </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;.*\.css;.*\.txt;" >>>>> statistics="true" >>>>> /> >>>>> >>>>> <Deployer >>>>> className="org.apache.catalina.ha.deploy.FarmWarDeployer" >>>>> tempDir="/tmp/war-temp/" >>>>> deployDir="/tmp/war-deploy/" >>>>> watchDir="/tmp/war-listen/" >>>>> watchEnabled="false"/> >>>>> >>>>> <ClusterListener >>>>> className="org.apache.catalina.ha.session.ClusterSessionListener"/> >>>>> >>>>> >>>>> </Cluster> >>>>> >>>>> >>>>> >>>>> Here are the cluster related messages from the startup of instance 2: >>>>> >>>>> INFO: Cluster is about to start >>>>> Jul 16, 2009 6:03:26 PM >>>>> org.apache.catalina.tribes.transport.ReceiverBase bind >>>>> INFO: Receiver Server Socket bound to:/192.168.3.5:4001 >>>>> Jul 16, 2009 6:03:26 PM >>>>> org.apache.catalina.tribes.membership.McastServiceImpl setupSocket >>>>> INFO: Setting cluster mcast soTimeout to 500 >>>>> Jul 16, 2009 6:03:26 PM >>>>> org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers >>>>> INFO: Sleeping for 1000 milliseconds to establish cluster membership, >>>>> start level:4 >>>>> Jul 16, 2009 6:03:27 PM >>>>> org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers >>>>> INFO: Done sleeping, membership established, start level:4 >>>>> Jul 16, 2009 6:03:27 PM >>>>> org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers >>>>> INFO: Sleeping for 1000 milliseconds to establish cluster membership, >>>>> start level:8 >>>>> Jul 16, 2009 6:03:28 PM >>>>> org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers >>>>> INFO: Done sleeping, membership established, start level:8 >>>>> Jul 16, 2009 6:03:29 PM org.apache.catalina.ha.session.DeltaManager >>>>> start >>>>> INFO: Register manager /Struts1 to cluster element Engine with name >>>>> Catalina >>>>> Jul 16, 2009 6:03:29 PM org.apache.catalina.ha.session.DeltaManager >>>>> start >>>>> INFO: Starting clustering manager at /Struts1 >>>>> Jul 16, 2009 6:03:29 PM org.apache.catalina.ha.session.DeltaManager >>>>> getAllClusterSessions >>>>> INFO: Manager [localhost#/Struts1]: skipping state transfer. No >>>>> members >>>>> active in cluster group. >>>>> >>>>> >>>>> Mitch >>>>> >>>>> >>>>> --------------------------------------------------------------------- >>>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>>>> For additional commands, e-mail: users-h...@tomcat.apache.org >>>>> >>>>> >>>>> >>>>> >>>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>>> For additional commands, e-mail: users-h...@tomcat.apache.org >>>> >>>> >>>> >>>> >>> >>> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
