rabbitmq fails after fuel setup: error: [Errno 111] Connection refused

[Ilya Popov]

MOS 9.0

When you change name of fuel hostname in fuelmenu ("DNS & Hostname" menu item, "hostname" field) from default ("fuel" by default ) to any other e.g. "myfuel" during fuel installation process,
when after installation finished rabbitmq fails to start and fuel masternode will fail to check network configuration or delete environment or network group and will show the following error:

Errno 111] Connection refused will appear. In Astute log we will see the following messages:

2016-08-11 06:45:30 WARNING [1985] TCP connection to AMQP failed: Could not establish TCP connection to any of the configured hosts. Retry 5 sec later...
2016-08-11 06:45:30 INFO [1985] Worker initialization
2016-08-11 06:45:30 WARNING [1971] TCP connection to AMQP failed: Could not establish TCP connection to any of the configured hosts. Retry 5 sec later...
2016-08-11 06:45:30 WARNING [1976] TCP connection to AMQP failed: Could not establish TCP connection to any of the configured hosts. Retry 5 sec later...
2016-08-11 06:45:30 INFO [1971] Worker initialization

Cause of all these errors - rabbitmq isn't started

[Oleksiy Molchanov (omolchanov)]

We have already patch for this - https://review.openstack.org/#/c/346694/.