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From scow <zkzy2...@hotmail.com>
Subject some broker can't join network of brokers
Date Fri, 09 Jul 2010 08:10:01 GMT

I have configured a network of brokers(cluster) use dynamic discovery. The
typical configuration is

        <networkConnectors>
          <networkConnector uri="multicast://default?group=com"
            dynamicOnly="true"
            networkTTL="3"
            prefetchSize="1"
            decreaseNetworkConsumerPriority="true" />
        </networkConnectors>

        <transportConnectors>
            <transportConnector name="openwire" uri="tcp://0.0.0.0:61616"
discoveryUri="multicast://default?group=com" />
        </transportConnectors>

There are 5 brokers in the cluster. 3 brokers(b2-b4) work well, other two(b1
and b5) can't join the cluster, they are started like single broker. One of
them seems can detect other three, it records in log:

 INFO | Network connection between vm://dynamic-broker2#0 and
tcp://b4/172.28.16.139:61616(dynamic-broker1) has been established.
 INFO | Network connection between vm://dynamic-broker2#2 and
tcp://b2/172.28.16.137:61616(dynamic-broker1) has been established.
 INFO | Network connection between vm://dynamic-broker2#4 and
tcp://b3/172.28.16.138:61616(dynamic-broker1) has been established.
 WARN | Failed to register MBean:
org.apache.activemq:BrokerName=dynamic-broker2,Type=Connection,ConnectorName=openwire,Connection=NC_dynamic-broker1_outbound
 WARN | Failed to register MBean:
org.apache.activemq:BrokerName=dynamic-broker2,Type=Connection,ConnectorName=openwire,Connection=NC_dynamic-broker1_outbound
 INFO | dynamic-broker2 bridge to dynamic-broker1 stopped
 INFO | dynamic-broker2 bridge to dynamic-broker1 stopped
 INFO | Connector vm://dynamic-broker2 Stopped
 INFO | dynamic-broker2 bridge to dynamic-broker1 stopped

The other one even can't discover other brokers or discovered by others. All
the 5 brokers are in the same lan and can connect to each other.

If I configured b1 and b5 with static uri, they can formed a cluster and
work well. Do you have any experience over this situation, thanks.

 

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