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The servers participating in a network of brokers must have a networkConnections <networkConnections> element in their activemq.xml. Do note that the elements within the <broker> elements *must* appear alphabetically - otherwise the server will fail without notice!
This is the configuation file for instance1 on sandkasse-01 - note that :
Code Block


<?xml version="1.0" encoding="UTF-8"?><beans xmlns="[http://www.springframework.org/schema/beans|http://www.springframework.org/schema/beans]" xmlns:amq="[http://activemq.apache.org/schema/core|http://activemq.apache.org/schema/core]" xmlns:xsi="[http://www.w3.org/2001/XMLSchema-instance|http://www.w3.org/2001/XMLSchema-instance]" xsi:schemaLocation="[http://www.springframework.org/schema/beans|http://www.springframework.org/schema/beans] [http://www.springframework.org/schema/beans/spring-beans-2.0.xsd|http://www.springframework.org/schema/beans/spring-beans-2.0.xsd]&nbsp;&nbsp;   [http://activemq.apache.org/schema/core|http://activemq.apache.org/schema/core] [http://activemq.apache.org/schema/core/activemq-core.xsd|http://activemq.apache.org/schema/core/activemq-core.xsd]">

 &nbsp;&nbsp;&nbsp;   <\!-\- Allows us to use system properties as variables in this configuration file \-->
&nbsp;&nbsp;&nbsp; <bean> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <property  <bean>
        <property name="locations">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <value>file:${activemq.base}/conf/credentials.properties</value>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;        </property>
&nbsp;&nbsp;&nbsp;
    </bean>

   &nbsp;&nbsp;&nbsp; <\!-\-
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -
        The <broker> element is used to configure the ActiveMQ broker.
&nbsp;&nbsp;&nbsp; \    -->
&nbsp;&nbsp;&nbsp;
    <broker xmlns="[http://activemq.apache.org/schema/core|http://activemq.apache.org/schema/core]" brokerName="instance1" dataDirectory="${activemq.base}/data" destroyApplicationContextOnStop="true">

 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\!-\-
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; For better       <!--
                        For better performances use VM cursor and small memory limit.
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; For                         For more information, see:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;            [http://activemq.apache.org/message-cursors.html|http://activemq.apache.org/message-cursors.html]

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;            Also, if your producer is "hanging", it's probably due to producer flow control.
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            For more information, see:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [http            [http://activemq.apache.org/producer-flow-control.html|http://activemq.apache.org/producer-flow-control.html]
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \
        -->

 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <destinationPolicy>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <policyMap>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <policyEntries>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;      <destinationPolicy>
            <policyMap>
              <policyEntries>
                <policyEntry memoryLimit="1mb" producerFlowControl="true" topic="&gt;">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <pendingSubscriberPolicy>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <vmCursor/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </pendingSubscriberPolicy>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </policyEntry>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <policyEntry memoryLimit="1mb" producerFlowControl="true" queue="&gt;">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\!-\- Use VM cursor for better latency
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; For more information, see:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                  <pendingSubscriberPolicy>
                    <vmCursor/>
                  </pendingSubscriberPolicy>
                </policyEntry>
                <policyEntry memoryLimit="1mb" producerFlowControl="true" queue="&gt;">
                  <!-- Use VM cursor for better latency
                       For more information, see:

                       [http://activemq.apache.org/message-cursors.html|http://activemq.apache.org/message-cursors.html]

                  <pendingQueuePolicy>
                    <vmQueueCursor/>
                  </pendingQueuePolicy>
                  -->
                </policyEntry>
              </policyEntries>
            </policyMap>
        </destinationPolicy>

        <!--
            The managementContext is used to configure how ActiveMQ is exposed in
            JMX. By default, ActiveMQ uses the MBean server that is started by
            the JVM. For more information, see:

            [http://activemq.apache.org/message-cursorsjmx.html|http://activemq.apache.org/message-cursorsjmx.html]

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <pendingQueuePolicy>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <vmQueueCursor/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </pendingQueuePolicy>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \-->
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </policyEntry>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </policyEntries>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </policyMap>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </destinationPolicy>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\!-\-
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The managementContext is used to configure how ActiveMQ is exposed in
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; JMX. By default, ActiveMQ uses the MBean server that is started by
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the JVM. For more information, see:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [http://activemq.apache.org/jmx.html|http://activemq.apache.org/jmx.html]
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \-->
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <managementContext>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <managementContext createConnector="false"/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </managementContext>

{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\!-\-{color}
{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Added by csv 20110530:{color}
{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The network connectors enumerate other brokers participating in{color}
{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a network of brokers{color}
{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{color} [http://activemq.apache.org/networks-of-brokers.html|http://activemq.apache.org/networks-of-brokers.html]
{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \-->{color}

{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <networkConnectors>{color}
{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <networkConnector name="instance2" uri="static:(tcp://localhost:60002)"/>{color}
{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <networkConnector name="instance3" uri="static:(tcp://localhost:60003)"/>{color}
{color:#800000}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </networkConnectors>{color}

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\!-\-
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configure message persistence for the broker. The default persistence
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mechanism is the KahaDB store (identified by the kahaDB tag).
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; For more information, see:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        -->
        <managementContext>
            <managementContext createConnector="false"/>
        </managementContext>

        <!--
            Added by csv 20110530:
            The network connectors enumerate other brokers participating in
            a network of brokers
           {color} [http://activemq.apache.org/networks-of-brokers.html|http://activemq.apache.org/networks-of-brokers.html]
        -->

        <networkConnectors>
            <networkConnector name="instance2" uri="static:(tcp://localhost:60002)"/>
            <networkConnector name="instance3" uri="static:(tcp://localhost:60003)"/>
        </networkConnectors>

        <!--
            Configure message persistence for the broker. The default persistence
            mechanism is the KahaDB store (identified by the kahaDB tag).
            For more information, see:

            [http://activemq.apache.org/persistence.html|http://activemq.apache.org/persistence.html]
        -->
        <persistenceAdapter>
            <kahaDB directory="${activemq.base}/data/kahadb"/>
        </persistenceAdapter>

          <!--
            The systemUsage controls the maximum amount of space the broker will
            use before slowing down producers. For more information, see:

            [http://activemq.apache.org/persistenceproducer-flow-control.html|http://activemq.apache.org/persistenceproducer-flow-control.html]
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \-->
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <persistenceAdapter>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <kahaDB directory="${activemq.base}/data/kahadb"/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </persistenceAdapter>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\!-\-
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The systemUsage controls the maximum amount of space the broker will
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; use before slowing down producers. For more information, see:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [http://activemq.apache.org/producer-flow-control.html|http://activemq.apache.org/producer-flow-control.html]

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <systemUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <systemUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <memoryUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <memoryUsage limit="20 mb"/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </memoryUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <storeUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <storeUsage limit="1 gb"/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </storeUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <tempUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <tempUsage limit="100 mb"/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </tempUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </systemUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </systemUsage>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \-->

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\!-\-
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

        <systemUsage>
            <systemUsage>
                <memoryUsage>
                    <memoryUsage limit="20 mb"/>
                </memoryUsage>
                <storeUsage>
                    <storeUsage limit="1 gb"/>
                </storeUsage>
                <tempUsage>
                    <tempUsage limit="100 mb"/>
                </tempUsage>
            </systemUsage>
        </systemUsage>
                -->

        <!--
            The transport connectors expose ActiveMQ over a given protocol to
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            clients and other brokers. For more information, see:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            [http://activemq.apache.org/configuring-transports.html|http://activemq.apache.org/configuring-transports.html]
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \-->
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <transportConnectors>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        -->
        <transportConnectors>
            <transportConnector name="openwire" uri="tcp://0.0.0.0:60001"/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        </transportConnectors>

   &nbsp;&nbsp;&nbsp; </broker>

   &nbsp;&nbsp;&nbsp; <\!-\-
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        Enable web consoles, REST and Ajax APIs and demos
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        It also includes Camel (with its web console), see ${ACTIVEMQ_HOME}/conf/camel.xml for more info

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

        Take a look at ${ACTIVEMQ_HOME}/conf/jetty.xml for more details
&nbsp;&nbsp;&nbsp; \
    -->
&nbsp;&nbsp;&nbsp;
    <import resource="jetty.xml"/>

</beans>
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