Hi All,
Hopefully someone can help me out here. In the project I'm working on we're
using the camel-rabbitmq component to connect to a cluster of three RabbitMQ
nodes. We're using the addresses parameter in the URL configuration of the
RabbitMQ facing endpoints, like this:
from:rabbitmq://vmsys:5671/emailExchange?connectionFactory=rabbitConnectionFactory&autoDelete=false&queue=emailrouteQueue&exchangeType=topic&autoAck=false&addresses=vmsys:5671,vmsys2:5671,vmsys3:5671
Today the primary node 'vmsys' in that cluster got brought down for some OS
patches and Camel in turn started logging this:
WARN o.a.c.c.r.RabbitConsumer - Unable to obtain a RabbitMQ channel. Will try
again
INFO o.a.c.c.r.RabbitConsumer - Attempting to open a new rabbitMQ channel
Tried a restart of the application in the hopes that Camel might pick up the
next node 'vmsys2' in the addresses list but no such thing, instead this was
printed in the logs:
com.rabbitmq.client.ShutdownSignalException: channel error; protocol method:
#method<channel.close>(reply-code=404, reply-text=NOT_FOUND - home node
'rabbit@vmsys' of durable queue 'emailrouteQueue' in vhost '/comms' is down or
inaccessible, class-id=50, method-id=10)
In the RabbitMQ console on vmsys2 the queue statuses were showing up with a red
flag and a message stating 'The queue is located on a cluster node or nodes
that are down'.
I would have expected that Camel would simply switch over to the second node in
the addresses list if the primary goes down. Also, while I'm seeing the queues
from the vmsys2 node's console application it doesn't look like they're
actually being replicated there like for our Spring application queues.
Is there something wrong in endpoint configuration that you can see or the
connection factory setup? Think I followed the docs as best as I could.
Here is also how the rabbitConnectionFactory is instantiated:
@Bean(name = "rabbitConnectionFactory")
public ConnectionFactory customerCommsCachingConnectionFactory() throws
KeyManagementException, NoSuchAlgorithmException {
ConnectionFactory cf = new ConnectionFactory();
cf.setHost(rabbitHost);
cf.setPort(rabbitPort);
cf.setUsername(rabbitUser);
cf.setPassword(rabbitPassword);
cf.setVirtualHost(rabbitVirtualhost);
cf.setAutomaticRecoveryEnabled(false);
if (sslEnabled)
cf.useSslProtocol();
return cf;
}
Any help on this would be greatly appreciated. If you need any more info on
this please let me know, I'll do my best to supply it.
Thanks and Regards,
Valdis
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