RabbitMQ consumes memory and shuts

Question

I just installed OpenStack Juno using devstack, and observed that RabbitMQ (package rabbitmq-server-3.1.5-10 installed by yum) is not stable, i.e. it quickly eats up the memory and shuts down; there is 2G of RAM. Below is the messages from logs and 'systemctl status' before the daemon died:

=INFO REPORT==== 18-Dec-2014::01:25:40 ===
vm_memory_high_watermark clear. Memory used:835116352 allowed:835212083

=WARNING REPORT==== 18-Dec-2014::01:25:40 ===
memory resource limit alarm cleared on node rabbit@node

=INFO REPORT==== 18-Dec-2014::01:25:40 ===
accepting AMQP connection <0.27011.5> (10.0.0.11:55198 -> 10.0.0.11:5672)

=INFO REPORT==== 18-Dec-2014::01:25:41 ===
vm_memory_high_watermark set. Memory used:850213192 allowed:835212083

=WARNING REPORT==== 18-Dec-2014::01:25:41 ===
memory resource limit alarm set on node rabbit@node.

**********************************************************
*** Publishers will be blocked until this alarm clears ***
**********************************************************


rabbitmqctl[770]: ===========
rabbitmqctl[770]: nodes in question: [rabbit@node]
rabbitmqctl[770]: hosts, their running nodes and ports:
rabbitmqctl[770]: - node: [{rabbitmqctl770,40089}]
rabbitmqctl[770]: current node details:
rabbitmqctl[770]: - node name: rabbitmqctl770@node
rabbitmqctl[770]: - home dir: /var/lib/rabbitmq
rabbitmqctl[770]: - cookie hash: FftrRFUESg4RKWsyb1cPqw==
systemd[1]: rabbitmq-server.service: control process exited, code=exited status=2
systemd[1]: Unit rabbitmq-server.service entered failed state.

I know about set_vm_memory_high_watermark, but it doesn't solve the issue. I want to ensure that the daemon doesn't shut down abruptly. I wonder if someone saw this before and could advise?

Thanks.

UPDATE

Upgraded to version 3.4.2 taken directly from www.rabbitmq.com/download.html The new version doesn't consume RAM that fast and tends to work longer then previous version, but eventually still eats out all the memory and shuts.

Answer 1

try to use CloudAMQP instead of installing locally. This will be fixed then. firstly create a rabbitMQ account here. https://customer.cloudamqp.com/signup. then create your queue there and connect with your application.

Answer 2

I think the number of connections in the servers are increasing and they are being held like that without closing that's why it is consuming more memory. When the usage of RAM increases beyond the watermark rabbitmq server won't accept any network request. Either you have to close the connections which all are opened or you have to increase the RAM of the system. But increasing the RAM will only reduce the problem for some time but you'll face the problem again it is better to close the connections.