Thanks! that was indeed my mistake. (btw, the documentation doesn't include any such examples, nor does the code examples project)
I have now configured the clients with this url: jgroups://active_broadcast_channel?file=WEB-INF/conf/test-jgroups-jdbc_ping.xml&refreshTimeout=30000&discoveryInitialWaitTimeout=30000 However now the clients can not connect at all. They receive this error: ActiveMQConnectionTimedOutException[errorType=CONNECTION_TIMEDOUT message=AMQ119012: Timed out waiting to receive initial broadcast from cluster Meaning, as far as I understand, they do not receive a topology broadcast notification. On the other hand I see that org.apache.activemq.artemis.core.server.cluster.impl.BroadcastGroupImpl#broadcastConnectors method is being called constantly (I configured it to be called every second), yet the receiver endpoint there is always null. So this is another configuration problem I assume. For reference I am copying my settings below: <?xml version='1.0'?> <configuration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:activemq" xsi:schemaLocation="urn:activemq /schema/artemis-server.xsd"> <core xmlns="urn:activemq:core"> <bindings-directory>${data.dir}/server0/data/messaging/bindings</bindings-directory> <journal-directory>${data.dir}/server0/data/messaging/journal</journal-directory> <large-messages-directory>${data.dir}/server0/data/messaging/largemessages</large-messages-directory> <paging-directory>${data.dir}/server0/data/messaging/paging</paging-directory> <connectors> <connector name="netty-connector">tcp://localhost:61616</connector> </connectors> <acceptors> <acceptor name="netty-acceptor">tcp://localhost:61616</acceptor> </acceptors> <broadcast-groups> <broadcast-group name="my-broadcast-group"> <broadcast-period>1000</broadcast-period> <jgroups-file>WEB-INF/conf/test-jgroups-jdbc_ping.xml</jgroups-file> <jgroups-channel>active_broadcast_channel</jgroups-channel> <connector-ref>netty-connector</connector-ref> </broadcast-group> </broadcast-groups> <discovery-groups> <discovery-group name="my-discovery-group"> <jgroups-file>WEB-INF/conf/test-jgroups-jdbc_ping.xml</jgroups-file> <jgroups-channel>active_broadcast_channel</jgroups-channel> <refresh-timeout>1000</refresh-timeout> </discovery-group> </discovery-groups> <cluster-connections> <cluster-connection name="my-cluster"> <connector-ref>netty-connector</connector-ref> <call-timeout>1000</call-timeout> <retry-interval>500</retry-interval> <use-duplicate-detection>true</use-duplicate-detection> <message-load-balancing>OFF</message-load-balancing> <max-hops>1</max-hops> <call-failover-timeout>1000</call-failover-timeout> <discovery-group-ref discovery-group-name="my-discovery-group"/> </cluster-connection> </cluster-connections> <ha-policy> <replication> <master> <cluster-name>my-cluster</cluster-name> <check-for-live-server>true</check-for-live-server> </master> </replication> </ha-policy> <configuration-file-refresh-period>1000</configuration-file-refresh-period> <address-settings> <address-setting match="jms.queue.*"> <auto-delete-jms-queues>false</auto-delete-jms-queues> <auto-delete-jms-topics>false</auto-delete-jms-topics> </address-setting> </address-settings> <security-settings> <security-setting match="#"> <permission type="createDurableQueue" roles="guest"/> <permission type="deleteDurableQueue" roles="guest"/> <permission type="createNonDurableQueue" roles="guest"/> <permission type="deleteNonDurableQueue" roles="guest"/> <permission type="consume" roles="guest"/> <permission type="send" roles="guest"/> </security-setting> </security-settings> </core> </configuration> and JGroups config xml: <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:org:jgroups" xsi:schemaLocation="urn:org:jgroups http://www.jgroups.org/schema/jgroups.xsd"> <TCP loopback="true" recv_buf_size="${tcp.recv_buf_size:5M}" send_buf_size="${tcp.send_buf_size:5M}" max_bundle_size="64K" max_bundle_timeout="30" use_send_queues="true" sock_conn_timeout="300" timer_type="new3" timer.min_threads="4" timer.max_threads="10" timer.keep_alive_time="3000" timer.queue_max_size="500" thread_pool.enabled="true" thread_pool.min_threads="2" thread_pool.max_threads="8" thread_pool.keep_alive_time="5000" thread_pool.queue_enabled="true" thread_pool.queue_max_size="10000" thread_pool.rejection_policy="discard" oob_thread_pool.enabled="true" oob_thread_pool.min_threads="1" oob_thread_pool.max_threads="8" oob_thread_pool.keep_alive_time="5000" oob_thread_pool.queue_enabled="false" oob_thread_pool.queue_max_size="100" oob_thread_pool.rejection_policy="discard"/> <JDBC_PING connection_url="jdbc:hsqldb:hsql://localhost:9001/mvdb;hsqldb.tx=mvcc" connection_username="sa" connection_password="" connection_driver="org.hsqldb.jdbcDriver" initialize_sql="" /> <MERGE3 min_interval="10000" max_interval="30000"/> <FD_SOCK/> <FD timeout="3000" max_tries="3" /> <VERIFY_SUSPECT timeout="1500" /> <BARRIER /> <pbcast.NAKACK2 use_mcast_xmit="false" discard_delivered_msgs="true"/> <UNICAST3 /> <pbcast.STABLE stability_delay="1000" desired_avg_gossip="50000" max_bytes="4M"/> <pbcast.GMS print_local_addr="true" join_timeout="2000" view_bundling="true"/> <MFC max_credits="2M" min_threshold="0.4"/> <FRAG2 frag_size="60K" /> <pbcast.STATE_TRANSFER/> </config> -- Sent from: http://activemq.2283324.n4.nabble.com/ActiveMQ-User-f2341805.html