Quick Start ?'s

[hopsj]

Hello, I'm attempting to run through the install, figured I'd try the quick start first. Worked a charm at home on my mac to get the example up and running, but running on a Linux server at work (Red Hat Enterprise Linux release 8.3 (Ootpa)), the startup ./start.sh fails, ending with an error message ModuleNotFoundError: No module named 'settings' (full output below). I'm new to docker, and not sure where to start on troubleshooting, any advice?

Full output:

Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Completed short name "nanofab/nemo" with unqualified-search registries (origin: /etc/containers/registries.conf)
Trying to pull registry.access.redhat.com/nanofab/nemo:1.12.0...
  name unknown: Repo not found
Trying to pull registry.redhat.io/nanofab/nemo:1.12.0...
  unable to retrieve auth token: invalid username/password: unauthorized: Please login to the Red Hat Registry using your Customer Portal credentials. Further instructions can be found here: https://access.redhat.com/RegistryAuthentication
Trying to pull docker.io/nanofab/nemo:1.12.0...
Getting image source signatures
Copying blob 6fba9447437b done
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Copying config 226f121fe1 done
Writing manifest to image destination
Storing signatures
226f121fe13881942ad178e646e036d1da5adcfccd2744c071239f99f905a46e
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Completed short name "nanofab/nginx" with unqualified-search registries (origin: /etc/containers/registries.conf)
Trying to pull registry.access.redhat.com/nanofab/nginx:2.1.0...
  name unknown: Repo not found
Trying to pull registry.redhat.io/nanofab/nginx:2.1.0...
  unable to retrieve auth token: invalid username/password: unauthorized: Please login to the Red Hat Registry using your Customer Portal credentials. Further instructions can be found here: https://access.redhat.com/RegistryAuthentication
Trying to pull docker.io/nanofab/nginx:2.1.0...
Getting image source signatures
Copying blob 1e437faeaaf7 done
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Copying config 3871b84010 done
Writing manifest to image destination
Storing signatures
3871b84010f5e076bc338718f5f63a127ae78e1278ff4d0ed8cd55b772c67328
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Completed short name "nanofab/control_center" with unqualified-search registries (origin: /etc/containers/registries.conf)
Trying to pull registry.access.redhat.com/nanofab/control_center:2.3.0...
  name unknown: Repo not found
Trying to pull registry.redhat.io/nanofab/control_center:2.3.0...
  unable to retrieve auth token: invalid username/password: unauthorized: Please login to the Red Hat Registry using your Customer Portal credentials. Further instructions can be found here: https://access.redhat.com/RegistryAuthentication
Trying to pull docker.io/nanofab/control_center:2.3.0...
Getting image source signatures
Copying blob a02a4930cb5d skipped: already exists
Copying blob c475cd8cac66 done
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Copying blob 2ec0e6fe18be done
Copying config 72124c3202 done
Writing manifest to image destination
Storing signatures
72124c320231fb7985158a130c88256da91c7d63649a8cc07197b5a9bd28ac52
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Traceback (most recent call last):
  File "/usr/local/bin/django-admin", line 10, in <module>
    sys.exit(execute_from_command_line())
  File "/usr/local/lib/python3.6/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python3.6/site-packages/django/core/management/__init__.py", line 308, in execute
    settings.INSTALLED_APPS
  File "/usr/local/lib/python3.6/site-packages/django/conf/__init__.py", line 56, in __getattr__
    self._setup(name)
  File "/usr/local/lib/python3.6/site-packages/django/conf/__init__.py", line 41, in _setup
    self._wrapped = Settings(settings_module)
  File "/usr/local/lib/python3.6/site-packages/django/conf/__init__.py", line 110, in __init__
    mod = importlib.import_module(self.SETTINGS_MODULE)
  File "/usr/local/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'settings'

[rptmat57]

Hello,
This seems to suggest the settings.py is not present where it's supposed to be /nemo/settings.py
Can you check that it is there?
The failing command is docker run --interactive --tty --volume $(pwd)/nemo:/nemo nanofab/nemo:1.12.0 django-admin migrate, so you can try running that one manually and see if it works.

[rptmat57]

I have not tried on RHEL 8. However we use RHEL 7 and I have not had any issues with it.
You could try:
docker run -it -v $(pwd)/nemo:/nemo nanofab/nemo:1.12.0 ls -al /nemo
to see if the folder is indeed mounted into the container and that you can see settings.py

FYI The script and NEMO versions are way outdated (we are at 3.7.0 currently) but it shouldn't really affect things (I need to update it at some point)

[hopsj]

Bit of an update here. If I use a oneliner command:
docker run --detach --name name_splash_pad --publish 8000:8000 nanofab/nemo_splash_pad

Seems to work OK.

My going theory is above docker is not mounting the volume properly? I suppose that's a docker issue then? I tried running just 'ls' command, but not sure if I'm using the docker run command correctly:

docker run --volume /home/<username>/nemo:/nemo nanofab/nemo ls
ls: cannot open directory '.': Permission denied

[rptmat57]

oh it's a permission issue. by default NEMO's docker container is run as root.
so you'll need to run it as root for it to work.

[hopsj]

Thanks again for the reply, tried running via sudo, but no dice.

However, now after two days of googling, I seem to have found a solution! See https://devops.stackexchange.com/questions/11267/permission-denied-within-mounted-volume-inside-docker-podman-container

Nutshell is adding :z at the end of the the volume. Not sure yet what exactly this means, but alas the ls command is at least working:

docker run --volume /home/<username>/nemo:/nemo:z nanofab/nemo ls
logs
media
secrets
settings.py
static

[rptmat57]

Ok I am glad this is working now.
It might be helpful for others trying to run NEMO on RHEL 8 / podman!