Daniel Pocock created ACTIVEMQ6-85:
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Summary: Add support for HA cluster / failover discovery using DNS
SRV records
Key: ACTIVEMQ6-85
URL: https://issues.apache.org/jira/browse/ACTIVEMQ6-85
Project: Apache ActiveMQ 6
Issue Type: New Feature
Affects Versions: 6.0.0
Reporter: Daniel Pocock
Copied from HORNETQ-1270
The DNS SRV record provides a convenient and well known mechanism to configure
active-active, load balanced clusters and to provide failover information.
It is convenient for many people because they already have DNS servers and
support staff are usually familiar with the procedures for maintaining the DNS
entries.
DNS SRV also allows port numbers to be advertised.
The clustering support using UDP multicast doesn't work for all sites,
especially where the user is more concerned with failover than load-balancing.
A specific DNS SRV implementation may involve some or all of the following:
- clients discovering a HornetQ, JNDI or STOMP host and port
- servers dynamically deciding which IPs and ports to bind to by checking DNS
SRV records
- servers dynamically deciding which other servers to cluster with by checking
for DNS SRV records
DNS SRV records may look like this:
_stomp._tcp.test-mq.example.org. IN SRV 1 50 5566 testmqhost1.example.org.
_stomp._tcp.test-mq.example.org. IN SRV 2 50 5566 testmqbackup.example.org.
A STOMP client would then be configured with just the domain name
"test-mq.example.org" and it would dynamically discover the hosts and ports
from DNS
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