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

The only solution which work for me: install erlang & rabbitmq from deb, so:

First remove:

apt-get purge rabbitmq-server
apt-get purge erlang
apt-get autoremove
reboot

After install wget:

sudo apt-get -y install socat logrotate init-system-helpers adduser
sudo apt-get -y install wget

Install erlang:

wget https://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb
sudo dpkg -i erlang-solutions_1.0_all.deb
sudo apt-get update
sudo apt-get install erlang

Install rabbitmq:

sudo apt-get update
wget https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.7.17/rabbitmq-server_3.7.17-1_all.deb
sudo dpkg -i rabbitmq-server_3.7.17-1_all.deb
rm rabbitmq-server_3.7.17-1_all.deb

Answer 2

Thanks to Richard H Fung.

His steps helped me to solve this issue.

But I did not have to re-install the rabbitmq.

When I opened my /etc/hosts file I found that IP assigned to my hostname is different than the actual ip(192.168.1.200 [static]).

#/etc/hosts  
127.0.0.1       localhost  
192.168.1.115   HOSTNAME

so I just changed IP address to 192.168.1.200 in my /etc/hosts file and it worked fine.

Answer 3

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

127.0.0.1 <hostname>

where <hostname> 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.

Answer 4

I had the same problem and doing the steps Richard H Fung provided didn't helped me. I also had to uninstall these packages: erlang erlang-epmd rabbitmq-server

zypper remove erlang erlang-epmd rabbitmq-server
rm -rf /var/lib/rabbitmq/*
zypper install erlang erlang-epmd rabbitmq-server
systemctl enable rabbitmq-server.service
systemctl start rabbitmq-server.service

If you have another OS than openSUSE just use your package manager to remove these packages (e.g. apt-get)

Answer 5

Remove RabbitMQ database: rm -rf /var/lib/rabbitmq/*

This action solves the problem. I believe somewhere in dumps stored a record with correspondence of nodes host names and ips. This fact causes contradiction if some hosts changed unexpectedly.

Answer 6

To solve this problem, I changed my /etc/hostname file with the new hostname then restarted the machine. After that, I ran rm -rf /var/lib/rabbitmq/mnesia/*

Then restarted the service : sudo service rabbitmq-server restart

At this point, it worked for me. If it still don't work, modify the file /etc/rabbitmq/rabbitmq-env.conf by adding those informations :

NODENAME=rabbit@YOUR_NEW_HOSTNAME
NODE_IP_ADDRESS=127.0.0.1
NODE_PORT=5672

Then restart the service : sudo service rabbitmq-server restart

Hope it helps.