RabbitMQ doesn't start after master node reset

[Mike Scherbakov]

After hard reset of master node, RabbitMQ looks started but doesn't work properly:

[root@d075c6249142 rabbitmq]# rabbitmqctl list_queues
Listing queues ...
Error: unable to connect to node rabbit@fuel: nodedown

DIAGNOSTICS
===========

nodes in question: [rabbit@fuel]

hosts, their running nodes and ports:
- unable to connect to epmd on fuel: nxdomain (non-existing domain)

current node details:
- node name: rabbitmqctl1149@d075c6249142
- home dir: /var/lib/rabbitmq
- cookie hash: 2xPc5aEDV5CIGSlYHzj7Nw==

[root@d075c6249142 rabbitmq]# hostname
d075c6249142
[root@d075c6249142 rabbitmq]# exit
[root@fuel ~]# hostname
fuel.domain.tld

If I try to restart it:
[root@d075c6249142 ~]# /etc/init.d/rabbitmq-server restart
Restarting rabbitmq-server: RabbitMQ is not running
RabbitMQ server startup failed on retry 1 of 60!
RabbitMQ server startup failed on retry 2 of 60!
RabbitMQ server startup failed on retry 3 of 60!
RabbitMQ server startup failed on retry 4 of 60!
RabbitMQ server startup failed on retry 5 of 60!
RabbitMQ server startup failed on retry 6 of 60!
RabbitMQ server startup failed on retry 7 of 60!
....
[root@d075c6249142 ~]# cat /var/log/rabbitmq/startup_log
ERROR: epmd error for host "fuel": nxdomain (non-existing domain) [FAILED]

I guess it can be related to hostname.

{"build_id": "2014-05-13_12-25-26", "mirantis": "yes", "build_number": "199", "ostf_sha": "bff980b2277a5898266500a26224a03bad594612", "nailgun_sha": "192b32e5ebd78b8521ced8329c07665dd75f5948", "production": "docker", "api": "1.0", "fuelmain_sha": "ac5500c45b1b05a72caadc0c7ef36c4279e4b36d", "astute_sha": "1b97b4d8832c12a1000235175b960e0102c23ca5", "release": "5.0", "fuellib_sha": "027751fc9c9806c9eb38683baf8bc1faced85de4"}

[Vladimir Kuklin (vkuklin)]

it is 100% related to the hostname. you should use hostname as -n argument value when running rabbitmqctl and you should not use init script as it is not how rabbitmq should be restarted.

[Mike Scherbakov (mihgen)]

How should I restart rabbitmq? It is master node BTW, not OpenStack nodes.

[Mike Scherbakov (mihgen)]

I can't reproduce an issue on #209..