rabbitmq-server fails to start after hostname has changed for first time

Question

I am using django-celery for my django project. Last day I have changed my computer\'s hostname (I am using Ubuntu 12.04, edited file \'/etc/hostname\'), and after next restart

Answer 1

In my case I did not have a following entry in /etc/hosts:

127.0.0.1 

where is the hostname of my machine (as given by the hostname command). After adding that line, RabbitMQ started successfully. I did not have any earlier installations of RabbitMQ.