rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

pietro · 2019-01-30 09:54:28

Dear all,

I'm trying to install on my laptop RabbitMQ to do some test with it.

I've installed RabbitMQ with:

$ sudo pacman -Sy rabbitmq rabbitmqadmin
[...]
$ sudo systemctl enable rabbitmq.service
[...]
$ sudo systemctl start rabbitmq.service
[...]

The file

/etc/rabbitmq/rabbitmq-env.conf

has the default configuration:

NODENAME=rabbit@localhost
NODE_IP_ADDRESS=0.0.0.0
NODE_PORT=5672

If I try to enable the mqtt and the http admin plugins:

$ sudo rabbitmq-plugins enable rabbitmq_mqtt
Enabling plugins on node rabbit@localhost:
rabbitmq_mqtt
The following plugins have been configured:
  rabbitmq_management
  rabbitmq_management_agent
  rabbitmq_mqtt
  rabbitmq_web_dispatch
Applying plugin configuration to rabbit@localhost...
Plugin configuration unchanged.
chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’

$ sudo rabbitmq-plugins enable rabbitmq_management
Enabling plugins on node rabbit@localhost:
rabbitmq_management
The following plugins have been configured:
  rabbitmq_management
  rabbitmq_management_agent
  rabbitmq_mqtt
  rabbitmq_web_dispatch
Applying plugin configuration to rabbit@localhost...
Plugin configuration unchanged.
chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’

I tried to understand where I should set the

RABBITMQ_USER

and

RABBITMQ_GROUP

variables, but so far I was not able to find a solution.
Do you know what it is missing and what I'm doing wrong?

I tried to connect to: http://localhost:15672 and it seems to work, should I just ignore the chown message?

WorMzy · 2019-01-30 12:22:12

sudo pacman -Sy ...

Don't do this.

You should also set your hostname (and update your rabbitmq config), leaving it as localhost will cause problems if you're using a network manager that changes it (i.e. NetworkManager).

The error you are getting seems to stem from /usr/lib/rabbitmq/bin/rabbitmq-script-wrapper (which is the actual script called by all the /usr/bin/rabbitm* links). I don't think this is a misconfiguration problem on your end, but rather an upstream bug -- these variables are placeholders, they should be replaced by a configure/Make process, or else downstream should be told to replace them during packaging. At least, this is what I thought, but upstream doesn't have this script in git: https://github.com/rabbitmq/rabbitmq-se … 10/scripts but it is present in the 3.7.10 tarball:

$ bsdtar tf rabbitmq-server-3.7.10.tar.xz | grep rabbitmq-script-wrapper 
rabbitmq-server-3.7.10/scripts/rabbitmq-script-wrapper

So I'm not sure what is going on. I'd open a bug against the package on the Arch bug tracker, maybe the maintainer can shed some light on what's going on here.

eschwartz · 2019-01-31 03:00:31

It comes from https://github.com/rabbitmq/rabbitmq-se … pt-wrapper and the glorious genius upstream developers decided to make this script something that requires in-place sed before using it: https://github.com/rabbitmq/rabbitmq-se … 0926f7b5cb

And their method of doing so was to make this script something that the rpm and debian packaging hardcode.

*claps slowly*

...

In short, yes, please open an Arch bugreport.

Last edited by eschwartz (2019-01-31 03:02:05)

mt253 · 2019-02-09 18:55:42

I am running into this issue also trying to set up an environment to learn a Udacity course. Where you able to resolve it?

eschwartz · 2019-02-10 03:20:05

Who knows -- they never replied, they never submitted a bug report as I asked for.

mt253 · 2019-02-10 15:34:06

Im going to try setting a docker container to get around the problem

WorMzy · 2019-02-10 15:45:29

Okay, that's piqued my interest. What do you think the problem is, and what do you think using docker would accomplish?

mt253 · 2019-02-10 17:35:17

I am not sure, I am a newbie to Arch, I heard docker has prebuilt containers that contain various services, I see one with a rabbitmq container, I thought it would be worth a shot.

Last edited by mt253 (2019-02-10 18:33:35)

WorMzy · 2019-02-10 18:43:28

Okay, well the "problem" is that the wrapper script uses these placeholders instead of the actual user and group.

The simple fix (which would take five seconds to implement) would be to replace the placeholders with the correct user and group. The script already references the correct user elsewhere, and the group is probably easy enough to determine. Using docker to avoid having to do that seems incredibly counter-productive. Especially since the error is being triggered by a non-essential chown call that likely doesn't even need to be run, and doesn't cause any service failure by not being performed.

Reporting it to the maintainer of the package by way of a bug report would make sure the fix gets added to the package.

eschwartz · 2019-02-10 18:49:33

WorMzy wrote:

So I'm not sure what is going on. I'd open a bug against the package on the Arch bug tracker, maybe the maintainer can shed some light on what's going on here.

eschwartz wrote:

In short, yes, please open an Arch bugreport.

eschwartz wrote:

Who knows -- they never replied, they never submitted a bug report as I asked for.

WorMzy wrote:

Reporting it to the maintainer of the package by way of a bug report would make sure the fix gets added to the package.

I'm not understanding why one would opt for a docker container instead!

mt253 · 2019-02-11 01:37:29

Thanks for the help, let me try swapping out the placeholder with my username and group. Please forgive this newbie

Last edited by mt253 (2019-02-11 01:37:48)

WorMzy · 2019-02-11 08:55:36

Not your username and group, the rabbitmq username and group. Setting it to your username will cause more problems.

Are you sure that Arch is the right distribution for you? Newbie or not, a basic ability to read, process and apply community-provided information is expected of you. If you're going to skim read and jump to conclusions then you'll not have a good and productive Arch Linux experience.

Arch Linux

#1 2019-01-30 09:54:28

rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#2 2019-01-30 12:22:12

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#3 2019-01-31 03:00:31

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#4 2019-02-09 18:55:42

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#5 2019-02-10 03:20:05

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#6 2019-02-10 15:34:06

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#7 2019-02-10 15:45:29

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#8 2019-02-10 17:35:17

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#9 2019-02-10 18:43:28

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#10 2019-02-10 18:49:33

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#11 2019-02-11 01:37:29

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

#12 2019-02-11 08:55:36

Re: rabbitmq: "chown: invalid user: ‘@RABBITMQ_USER@:@RABBITMQ_GROUP@’"

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