U need either a group of servers to establish quorums or u need the network pinger.
On Mon, May 8, 2017 at 3:46 AM martk <123mar...@web.de> wrote: > Hello, > > I am using ActiveMQ Artemis 1.5.4 and configured a high available cluster > (master/slave broker) with replication (using static connectors; see main > configuration parts below). > > Under normal conditions (network connection fails or process shutdown/kill) > the switch from master to slave and backwards (desired to do by hand) works > nearly all the time (sometimes the backup server is not in sync although > both were parallel started for quite a time). > > Simulating a busy master server results in two active master broker > (processing messages but with no replication any more). To test/reproduce I > have done the following steps: > > 1. Master and slave proper started (master is live and slave is backup). > 2. Master stopped by sending the SIGSTOP signal to the process. After some > time the slave recognized the problem and gets live. > 4. Sending the SIGCONT signal to the master process causes a running master > and slave. This could then only be resolved with a manual shutdown of both > and probably a lose of messages. > > I would like to ensure only one live broker at the same time and the other > to do the backup (a shared storage is not possible). > Maybe it can be resolved by configuration otherwise I think that is a bug > because both server should always perform a continuous live-check. > > > -------------------- master-broker.xml > <?xml version='1.0'?> > <configuration xmlns="urn:activemq" > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > xsi:schemaLocation="urn:activemq > /schema/artemis-configuration.xsd"> > <core xmlns="urn:activemq:core"> > > <name>master</name> > > <persistence-enabled>true</persistence-enabled> > > <ha-policy> > <replication> > <master> > <check-for-live-server>true</check-for-live-server> > </master> > </replication> > </ha-policy> > > <connectors> > <connector name="netty-connector">tcp://MASTERIP:61616</connector> > <connector > name="netty-backup-connector-slave">tcp://SLAVEIP:61616</connector> > </connectors> > > <acceptors> > <acceptor name="netty-acceptor">tcp://MASTERIP:61616</acceptor> > </acceptors> > > <cluster-connections> > <cluster-connection name="cluster"> > <address>jms</address> > <connector-ref>netty-connector</connector-ref> > <retry-interval>500</retry-interval> > <use-duplicate-detection>true</use-duplicate-detection> > <static-connectors> > <connector-ref>netty-backup-connector-slave</connector-ref> > </static-connectors> > </cluster-connection> > </cluster-connections> > > </core> > </configuration> > > > -------------------- slave-broker.xml > <?xml version='1.0'?> > <configuration xmlns="urn:activemq" > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > xsi:schemaLocation="urn:activemq > /schema/artemis-configuration.xsd"> > <core xmlns="urn:activemq:core"> > > <name>slave1</name> > > <persistence-enabled>true</persistence-enabled> > > <ha-policy> > <replication> > <slave> > <allow-failback>false</allow-failback> > </slave> > </replication> > </ha-policy> > > <connectors> > <connector > name="netty-live-connector">tcp://MASTERIP:61616</connector> > <connector name="netty-connector">tcp://SLAVEIP:61616</connector> > </connectors> > > <acceptors> > <acceptor name="netty-acceptor">tcp://SLAVEIP:61616</acceptor> > </acceptors> > > <cluster-connections> > <cluster-connection name="cluster"> > <address>jms</address> > <connector-ref>netty-connector</connector-ref> > <retry-interval>500</retry-interval> > <use-duplicate-detection>true</use-duplicate-detection> > <static-connectors> > <connector-ref>netty-live-connector</connector-ref> > </static-connectors> > </cluster-connection> > </cluster-connections> > > </core> > </configuration> > > > -------------------- > Regards, > Martin > > > > -- > View this message in context: > http://activemq.2283324.n4.nabble.com/Artemis-HA-cluster-with-replication-tp4725734.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. > -- Clebert Suconic
