How do I start a RabbitMQ node? - rabbitmq

I keep getting this error every time I try to do something with RabbitMQ:
attempted to contact: [fdbvhost#FORTE]
fdbvhost#FORTE:
* connected to epmd (port 4369) on FORTE
* epmd reports: node 'fdbvhost' not running at all
no other nodes on FORTE
* suggestion: start the node
current node details:
- node name: 'rabbitmq-cli-54#FORTE'
- home dir: C:\Users\Jesus
- cookie hash: iuRlQy0F81aBpoY9aQqAzw==
This is the output I get when I run rabbitmqctl -n fdbvhost status or /rabbitmqctl -n fdbvhost list_vhosts.
I've tried rabbitmqctl -n fdbvhost start which gives me the following output:
Error: could not recognise command
Usage:
rabbitmqctl [-n <node>] [-t <timeout>] [-q] <command> [<command options>]
...
So this doesn't start it. I cannot find anything about starting a node in the documentation. How do I actually start my node/vhost?

Try running the following command from the RabbitMQ's installation sbin directory
rabbitmq-server start -detached
This should start the broker node if it was stopped for some reason.

Check if you have RabbitMQ installed as a service in the /etc/init.d/ folder
sudo su # might be needed
cd /etc/init.d/
ls . | grep rabbit
The output should be rabbitmq-server
If that's the case, then, try restarting your service with:
sudo service rabbitmq-server restart

For mac users
To Start
brew services start rabbitmq
To Restart
brew services restart rabbitmq
To Stop
brew services stop rabbitmq
To Know the status of the server
brew services info rabbitmq

Related

Cannot start rabbitmq, 'node down' Ubuntu 16.04

Similar to RabbitMQ has Nodedown Error. But, this is for Ubuntu 16.04 the working solution, posted below, differs from the windows one as well.
Something has gone wrong with my rabbitmq server. Trying to start the application gives an error:
$sudo rabbitmqctl start_app
Starting node rabbit#daniel ...
Error: unable to connect to node rabbit#daniel: nodedown
DIAGNOSTICS
===========
attempted to contact: [rabbit#daniel]
rabbit#daniel:
* connected to epmd (port 4369) on daniel
* epmd reports: node 'rabbit' not running at all
no other nodes on daniel
* suggestion: start the node
current node details:
- node name: 'rabbitmq-cli-6647#daniel'
- home dir: /var/lib/rabbitmq
- cookie hash: T1R4ztWXXH1w2IQe+fui9g==
Currently the only way I know of solving this is uninstalling/reinstalling rabbitmq. But, I'm hoping a more sensible solution is possible...
This is the important part of that message:
node 'rabbit' not running at all
You need to start RabbitMQ with systemctl start rabbitmq-server. You should also check the logs to see why it wasn't running in the first place.
Try to run it with sudo rabbitmq-server

how to reinstall a dead node in rabbitmq cluster

I have a rabbitmq cluster on rabbit1, rabbit2 and rabbit3. Rabbit2 and Rabbit3 join rabbit1 cluster as RAM node. And rabbit3 is crashed. In rabbit1 and rabbit2, when checking cluster status, the following answer I got.
ubuntu#rabbit2:~$ sudo rabbitmqctl cluster_status
Cluster status of node rabbit#rabbit2
[{nodes,[{disc,[rabbit#rabbit1]},{ram,[rabbit#rabbit3,rabbit#rabbit2]}]},
{running_nodes,[rabbit#rabbit1,rabbit#rabbit2]},
{cluster_name,<<"rabbit#localhost">>},
{partitions,[]},
{alarms,[{rabbit#rabbit1,[]},{rabbit#rabbit2,[]}]}]
Now I uninstall rabbitmq3 and install again. Install rabbitmq on rabbit3 successfully.
sudo service rabbitmq-server stop
sudo rm -rf /var/lib/rabbitmq/
sudo apt-get remove rabbitmq-server -y
sudo apt-get autoremove -y
sudo apt-get install rabbitmq-server -y
After installation, I try to add rabbit3 into cluster again. First step, I check cluster status on rabbit3.
ubuntu#rabbit3:~$ sudo rabbitmqctl cluster_status
Cluster status of node rabbit#rabbit3
[{nodes,[{disc,[rabbit#rabbit3]}]},
{running_nodes,[rabbit#rabbit3]},
{cluster_name,<<"rabbit#localhost">>},
{partitions,[]},
{alarms,[{rabbit#rabbit3,[]}]}]
Then I override the cookie file
ubuntu#rabbit3:~$ sudo sh -c "echo abcdefg > /var/lib/rabbitmq/.erlang.cookie"
ubuntu#rabbit3:~$ sudo cat /var/lib/rabbitmq/.erlang.cookie
abcdefg
Check the cluster again.
ubuntu#rabbit3:~$ sudo rabbitmqctl cluster_status
Cluster status of node rabbit#rabbit3
Error: unable to connect to node rabbit#rabbit3: nodedown
DIAGNOSTICS
===========
attempted to contact: [rabbit#rabbit3]
rabbit#rabbit3:
* connected to epmd (port 4369) on rabbit3
* epmd reports node 'rabbit' running on port 25672
* TCP connection succeeded but Erlang distribution failed
* suggestion: hostname mismatch?
* suggestion: is the cookie set correctly?
* suggestion: is the Erlang distribution using TLS?
current node details:
- node name: 'rabbitmq-cli-25#localhost'
- home dir: /var/lib/rabbitmq
- cookie hash: esZsDxSN6VGbi9JkMSxNZA==
rabbit#rabbit3 node cannot be connected, and cannot configure it anymore. I checked the rabbitmq installation document. It introduces how to configure cluster with happy path.
But if a node is dead, how to re-install it back.
I made a mistake during installation, in general, I should stop rabbitmq before setting cookie, like
sudo rabbitmqctl stop
sudo sh -c "echo abcd123456 > /var/lib/rabbitmq/.erlang.cookie"
sudo cat /var/lib/rabbitmq/.erlang.cookie
sudo chmod 400 /var/lib/rabbitmq/.erlang.cookie
sudo sh -c "echo abcd123456 > ~/.erlang.cookie"
sudo chmod 400 ~/.erlang.cookie

How do I stop the RabbitMQ server on localhost

I installed RabbitMQ server on OS X, and started it on command line. Now, it is not obvious that how I should stop it from running? After I did:
sudo rabbitmq-server -detached
I get:
Activating RabbitMQ plugins ...
0 plugins activated:
That was it. How should I properly shut it down? In the document, it mentions using rabbitmqctl(1), but it's not clear to me what that means. Thanks.
Edit: As per comment below, this is what I get for running sudo rabbitmqctl stop:
(project_env)mlstr-1:Package mlstr$ sudo rabbitmqctl stop
Password:
Stopping and halting node rabbit#h002 ...
Error: unable to connect to node rabbit#h002: nodedown
DIAGNOSTICS
===========
nodes in question: [rabbit#h002]
hosts, their running nodes and ports:
- h002: [{rabbit,62428},{rabbitmqctl7069,64735}]
current node details:
- node name: rabbitmqctl7069#h002
- home dir: /opt/local/var/lib/rabbitmq
- cookie hash: q7VU0JjCd0VG7jOEF9Hf/g==
Why is there still a 'current node'? I have not run any client program but only the RabbitMQ server, does that mean a server is still running?
It turns out that it is related to permissions. Somehow my rabbitmq server was started with user 'rabbitmq' (which is strange), so that I had to do
sudo -u rabbitmq rabbitmqctl stop
In my dev environment where I keep it running all the time, I use:
launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.rabbitmq.plist
and to start it
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.rabbitmq.plist
Even easier....
brew services stop rabbitmq
brew services start rabbitmq
Use rabbitmqctl stop to stop any node. If you need to specify the node giving you trouble, add the -n rabbit#[hostname] option.
You can also use the shortcut RabbitMQ Service - stop if you don't like the commands
stop
sudo systemctl stop rabbitmq-server
start
sudo systemctl start rabbitmq-server
For Windows, use PowerShell as Admin, then run
.\rabbitmq-service.bat stop
stop Stop the service. The service must be running for this command to have any effect.
https://www.rabbitmq.com/man/rabbitmq-service.8.html
For OP's answer above,
It turns out that it is related to permissions.
I have no knowledge on this.
For mac users
To Stop
brew services stop rabbitmq
To Start
brew services start rabbitmq
To Restart
brew services restart rabbitmq
To Know the status of the server
brew services info rabbitmq

rabbitmq refusing to start

I have installed rabbitmq on ubuntu and trying to start it using rabbitmq-server start, however, I'm getting this error:
Activating RabbitMQ plugins ...
0 plugins activated:
node with name "rabbit" already running on "mybox"
diagnostics:
- nodes and their ports on mybox: [{rabbit,38618},
{rabbitmqprelaunch13346,41776}]
- current node: rabbitmqprelaunch13346#mybox
- current node home dir: /var/lib/rabbitmq
- current node cookie hash: 8QRKGluOJOcZ4AAkEdFwQg==
so I try to stop it or restart it using service rabbitmq-server restart but I get the following error: Restarting rabbitmq-server: RabbitMQ is not running
The server's host name hostname -s is mybox.
How do I stop the currently running instance, or at least, how do I manage it? I have no access to it and yet I'm not able to run rabbitmq properly.
Thank you.
Rabbitmq is set to start automatically after it's installed.
I don't think it is configured run with the service command.
To see the status of rabbitmq
sudo rabbitmqctl status
To stop the rabbitmq
sudo rabbitmqctl stop
(Try the status command again to see that it's stopped).
To start it again, the recommended method is
sudo invoke-rc.d rabbitmq-server start
These all work with the vanilla ubuntu install using apt-get
Still not working?
If you've tried unsuccessfully to start or restart rabbitmq, check to see how many processes are running.
ps -ef | grep rabbit
There should be 5 processes running as the user rabbitmq.
If you have more, particularly if they're running as other users (such as root, or your own user) you should stop these processes.
The cleanest way is probably to reboot your machine.
rabbitmq-server refuses to start if the hostname -s value has changed.
The solution suggested here is only for test/development environments.
I had to delete the database to fix it locally.
i.e empty folder /var/lib/rabbitmq (ubuntu) or /usr/local/var/lib/rabbitmq/(mac)
I had similar problem but these suggestions didn't work for me(restart too). When I run rabbitmq-server command, I get a response like that:
$/ rabbitmq-server
BOOT FAILED
===========
Error description:
{error,{cannot_log_to_file,"/var/log/rabbitmq/rabbit#haber01.log",
{error,eacces}}}
....
When I checked permissions of /var/log/rabbitmq/rabbit#haber01.log file, I saw that group has not write permisson for that file. So I gave permission to group with that command:
/var/log/rabbigmq/$ chmod g+w *
then problem has gone!
Maybe this answer help someone.
Seems like the Mnesia database was corrupted. Had to delete it to get sudo service rabbitmq-server start going again !
$ sudo rm -rf /var/lib/rabbitmq/mnesia/
Also make sure that any stray rabbit processes are killed before clearing out
$ ps auxww | grep rabbit | awk '{print $2}' | sudo xargs kill -9
And then
$ sudo service rabbitmq-server start
If you use celery, your queues could reach max size and rabbit won't start because of that. Maybe you wouldn't even able to use rabbitmqctl, so if you can afford to clean the queues, just remove
/var/lib/rabbitmq/mnesia/rabbit#<host>/queues
on unix (look for mnesia DB path on your system).
Be careful: this will remove everything you have in rabbit, so this is a last solution ever.
Have a look what is in the log of the node that you are trying to start. It will be in /var/log/rabbitmq/
It was selinux in my case, rabbit could not bind to its ports.
My brew version of rabbitmq refused to start (after working fine for years without modification by me) too.
$ cat /usr/local/etc/rabbitmq/rabbitmq-env.conf
CONFIG_FILE=/usr/local/etc/rabbitmq/rabbitmq
NODE_IP_ADDRESS=127.0.0.1
NODENAME=rabbit#localhost
RABBITMQ_LOG_BASE=/usr/local/var/log/rabbitmq
I edited out rabbit# on NODENAME and brew services restart rabbitmq started working again.
If the standard stop and start are not working, list the rabbitmq processes that are running using
ps aux | grep rabbitmq
Kill the beam.smp process using
kill -9 {process id}
and start the rabbitmq-server again.

"node with name "rabbit" already running", but also "unable to connect to node 'rabbit'"

Rabbitmq server does not start, saying it's already running:
$: rabbitmq-server
Activating RabbitMQ plugins ...
0 plugins activated:
node with name "rabbit" already running on "android-d1af002161676bee"
diagnostics:
- nodes and their ports on android-d1af002161676bee: [{rabbit,52176},
{rabbitmqprelaunch2254,
59205}]
- current node: 'rabbitmqprelaunch2254#android-d1af002161676bee'
- current node home dir: /Users/Jordan
- current node cookie hash: ZSx3slRJURGK/nHXDTBRqQ==
But, rabbitmqctl seems to think otherwise:
rabbitmqctl -n rabbit status
Status of node 'rabbit#android-d1af002161676bee' ...
Error: unable to connect to node 'rabbit#android-d1af002161676bee': nodedown
diagnostics:
- nodes and their ports on android-d1af002161676bee: [{rabbit,52176},
{rabbitmqctl2462,59256}]
- current node: 'rabbitmqctl2462#android-d1af002161676bee'
- current node home dir: /Users/Jordan
- current node cookie hash: ZSx3slRJURGK/nHXDTBRqQ==
Any takers?
The rabbitmq server was running somewhere but it just couldn't be connected to.
One of the following will mention something about rabbits:
$: ps aux | grep epmd
$: ps aux | grep erl
Kill the process with kill -9 {pid of rabbitmq process}
i was having the same problem then I realized I was not issuing the right command.
./rabbitmqctl stop
this works everytime, although it does take down erlang runtime too. also mind where your config file.
I used rabbitmqctl stop and then restarted using rabbitmq-server as root.
This issue can be caused by two issues:
Rabbit is already running on the server. If that is the case, use the answer you found of killing the currently running process (ps aux | grep rabbit | grep -v grep)
You have changed the IP address of your machine but not changed the /etc/hosts file to reflect the new IP address of the machine.
The more common of the issues is the first, but the harder to find is the second (especially if you have rabbit running on the other machine. If rabbit is installed on the other machine it will look at the old IP address and would see another machine already running rabbitmq and give you the same error. This has caused me grief in the past.
I was having this same error # Win 7, but the solutions above did not worked for me, what did solved was to remove and reinstall the service. Using a console with admin rights:
rabbitmq-service remove
rabbitmq-service install
I hope this might help someone else too
$CD RabbitMQ Server\rabbitmq_server-3.7.8\sbin
rabbitmq-service remove
rabbitmq-service install
Go : windows Services
Find : RabbitMQ and Start it
after this Enable plugin :
rabbitmq-plugins enable rabbitmq_management
In my case under Ubuntu 11.10 it helped to
#rabbitmqctl cluster MASTER SLAVE
#rabbitmqctl start_app
before I always got this error message...
Using admin console, in Win 2012R2 ver 3.5.5 rabbit, got it to work using the remove and install then rabbitmq-server restart
then ctr-c to terminate the job, then I was able to use the windows service console and start the rabbitMq service.
In my case(windows),
1. I just ran the stop service.
2. The started the service.