502 after using quick install on Ubuntu 20.04

[CaitlynMainer]

Hello, trying to install InvenTree via the quick install method on Ubuntu Server 20.04, and I get the following:

### Installer for InvenTree - source: inventree/stable
### Detected distribution: Ubuntu 20.04
### Installing required packages for download
### Getting and adding key
### Adding package source
### Updating package lists
Hit:1 http://us.archive.ubuntu.com/ubuntu focal InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu focal-security InRelease
Get:5 https://dl.packager.io/srv/deb/inventree/InvenTree/stable/ubuntu 20.04 InRelease [1,863 B]
Fetched 1,863 B in 1s (1,547 B/s)
Reading package lists... Done
### Setting installer args
### Installing InvenTree
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  inventree
0 upgraded, 1 newly installed, 0 to remove and 56 not upgraded.
Need to get 0 B/117 MB of archives.
After this operation, 331 MB of additional disk space will be used.
Selecting previously unselected package inventree.
(Reading database ... 85729 files and directories currently installed.)
Preparing to unpack .../inventree_0.13.0-1702638825.301afaa9.focal_amd64.deb ...
Unpacking inventree (0.13.0-1702638825.301afaa9.focal) ...
Setting up inventree (0.13.0-1702638825.301afaa9.focal) ...
# Setting base environment variables
# No config file found: /etc/inventree/config.yaml, using envs or defaults
# Collected environment variables:
#    INVENTREE_MEDIA_ROOT=/opt/inventree/data/media
#    INVENTREE_STATIC_ROOT=/opt/inventree/data/static
#    INVENTREE_BACKUP_DIR=/opt/inventree/data/backup
#    INVENTREE_PLUGINS_ENABLED=true
#    INVENTREE_PLUGIN_FILE=/etc/inventree/plugins.txt
#    INVENTREE_SECRET_KEY_FILE=/etc/inventree/secret_key.txt
#    INVENTREE_DB_ENGINE=sqlite3
#    INVENTREE_DB_NAME=/opt/inventree/data/database.sqlite3
#    INVENTREE_DB_USER=sampleuser
#    INVENTREE_DB_HOST=samplehost
#    INVENTREE_DB_PORT=123456
# Getting the IP address of the server via web service
IP address is 50.43.54.229
# Setting up python environment
Collecting invoke
  Using cached invoke-2.2.0-py3-none-any.whl (160 kB)
Collecting wheel
  Using cached wheel-0.42.0-py3-none-any.whl (65 kB)
Installing collected packages: invoke, wheel
Successfully installed invoke-2.2.0 wheel-0.42.0
# Stopping nginx
# Setting up nginx to /etc/nginx/sites-enabled/inventree.conf
# Starting nginx
# (Re)creating init scripts
Nothing to do.
Nothing to do.
# Enabling InvenTree on boot
# Creating admin user data
# Stopping InvenTree
# Updating InvenTree
Requirement already satisfied: wheel in ./env/lib/python3.9/site-packages (0.42.0)
No idea what '--no-frontend' is!
# Set permissions for data dir and media: /opt/inventree/data
chown: cannot access '/opt/inventree/data': No such file or directory
# Setting up InvenTree config values
# Writing the settings to the config file /etc/inventree/config.yaml
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
sed: can't read /etc/inventree/config.yaml: No such file or directory
chown: cannot access '/opt/inventree/data': No such file or directory
chown: cannot access '/etc/inventree/config.yaml': No such file or directory
# Starting InvenTree
####################################################################################
This InvenTree install uses nginx, the settings for the webserver can be found in
/etc/nginx/sites-enabled/inventree.conf
Try opening InvenTree with either
http://localhost/ or http://PUBLIC_IP/

Admin user data:
   Email: [email protected]
   Username: admin
   Password: PASSWORD
####################################################################################
### Install done!```

When I go to the machine's IP address I get a 502 Bad Gateway error,
And my /var/log/syslog contains:
`Dec 16 20:36:18 inventory systemd[1]: inventree-worker-1.service: Main process exited, code=exited, status=1/FAILURE
Dec 16 20:36:18 inventory systemd[1]: inventree-worker-1.service: Failed with result 'exit-code'.
Dec 16 20:36:18 inventory systemd[1]: inventree-web-1.service: Scheduled restart job, restart counter is at 4.
Dec 16 20:36:18 inventory systemd[1]: inventree-worker-1.service: Scheduled restart job, restart counter is at 4.
Dec 16 20:36:18 inventory systemd[1]: Stopped inventree-web-1.service.
Dec 16 20:36:18 inventory systemd[1]: Started inventree-web-1.service.
Dec 16 20:36:18 inventory systemd[1]: Stopped inventree-worker-1.service.
Dec 16 20:36:18 inventory systemd[1]: Started inventree-worker-1.service.
Dec 16 20:36:18 inventory inventree-web-1.service[21167]: /opt/inventree/vendor/pkgr/processes/web: 2: exec: env/bin/gu>
Dec 16 20:36:18 inventory systemd[1]: inventree-web-1.service: Main process exited, code=exited, status=127/n/a
Dec 16 20:36:18 inventory systemd[1]: inventree-web-1.service: Failed with result 'exit-code'.
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]: Traceback (most recent call last):
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]:   File "/opt/inventree/InvenTree/manage.py", line 9, in <m>
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]:     from django.core.management import execute_from_comman>
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]: ModuleNotFoundError: No module named 'django'
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]: During handling of the above exception, another exception >
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]: Traceback (most recent call last):
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]:   File "/opt/inventree/InvenTree/manage.py", line 15, in <>
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]:     import django  # noqa: F401
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]: ModuleNotFoundError: No module named 'django'
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]: During handling of the above exception, another exception >
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]: Traceback (most recent call last):
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]:   File "/opt/inventree/InvenTree/manage.py", line 17, in <>
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]:     raise ImportError(
Dec 16 20:36:18 inventory inventree-worker-1.service[21168]: ImportError: Couldn't import Django. Are you sure it's ins>
Dec 16 20:36:18 inventory systemd[1]: inventree-worker-1.service: Main process exited, code=exited, status=1/FAILURE
Dec 16 20:36:18 inventory systemd[1]: inventree-worker-1.service: Failed with result 'exit-code'.`
repeatedly.
I checked for other issues like this, but the one I found was fixed by running the quick installer, which is where I am failing, not sure where to go from here, any help is appreciated, thanks!

[CaitlynMainer]

I've tried to fix the formatting in my post to no avail, apologies..

[SchrodingersGat]

@CaitlynMainer I think that this might be a bug in the installer - #6111

It looks like the installer has mostly finished, you may be able to fix this problem by running the following command (as either sudo or the inventree user):

inventree run cli update

Please let me know what happens when you run that

[CaitlynMainer]

That installed a ton of packages, but ends with this:

Backing up InvenTree database...
Python version 3.9.5 - /opt/inventree/env/bin/python3
load version from file
Traceback (most recent call last):
  File "/opt/inventree/InvenTree/manage.py", line 23, in <module>
    execute_from_command_line(sys.argv)
  File "/opt/inventree/env/lib/python3.9/site-packages/django/core/management/__init__.py", line 419, in execute_from_command_line
    utility.execute()
  File "/opt/inventree/env/lib/python3.9/site-packages/django/core/management/__init__.py", line 363, in execute
    settings.INSTALLED_APPS
  File "/opt/inventree/env/lib/python3.9/site-packages/django/conf/__init__.py", line 82, in __getattr__
    self._setup(name)
  File "/opt/inventree/env/lib/python3.9/site-packages/django/conf/__init__.py", line 69, in _setup
    self._wrapped = Settings(settings_module)
  File "/opt/inventree/env/lib/python3.9/site-packages/django/conf/__init__.py", line 170, in __init__
    mod = importlib.import_module(self.SETTINGS_MODULE)
  File "/usr/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 855, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/opt/inventree/InvenTree/InvenTree/settings.py", line 129, in <module>
    STATIC_ROOT = config.get_static_dir()
  File "/opt/inventree/InvenTree/InvenTree/config.py", line 237, in get_static_dir
    raise FileNotFoundError('INVENTREE_STATIC_ROOT not specified')
FileNotFoundError: INVENTREE_STATIC_ROOT not specified

[SchrodingersGat]

Ok, this looks like it is happening because the file /etc/inventree/config.yaml has not been created as part of the installation process.

From your install logs (and when I try to replicate the install):

# No config file found: /etc/inventree/config.yaml, using envs or defaults

chown: cannot access '/opt/inventree/data': No such file or directory

sed: can't read /etc/inventree/config.yaml: No such file or directory

The installer has not created the correct directories as expected. I also find that the /home/inventree/ directory is missing.

This will require some investigation to work out why the installer is not doing the right things

[dspmathguru]

I had the 502 issue after DigitalOcean updated automatically for some reason. Since I am just starting out, I did a fresh Droplet build on 'bare metal' using:

wget -qO install.sh https://get.inventree.org && bash install.sh

I get the 502 error. I see no data in /home/inventree.

I then did 'sudo inventree run cli update' and got the same INVENTREE_STATIC_ROOT not specified error.

[dspmathguru]

To get things to work again I had to do the following:

• sudo apt purge inventree
• sudo rm -rf /opt/inventree
• sudo rm -rf /home/inventree
• sudo rm -rf /etc/inventree
• sudo rm /etc/nginx/sites-enables/invetree.conf
• sudo ln -s /etc/nginx/sites-available/default.conf /etc/nginx/sites-enables/default.conf
• sudo apt install inventree=0.12.8-1698964278.a7487ff8.focal

The complete purge was necessary.

[mittkkoo]

What do you mean by DigitalOcean updated automatically?

[ctft1]

Hi,

I have the same 502 error (and also the /etc/inventree/config.yaml file not created, /opt/inventree/data dir not created as well, the log is similar) using the single install command line on a fresh Ubuntu 20.04

Is there any workaround to fix this?

Thank you!

[SchrodingersGat]

@ctft1 please try the complete purge as suggested by @dspmathguru above, and report back

[ctft1]

I tried with 0.13.0-1702638825.301afaa9.focal (same result) and 0.12.8-1698964278.a7487ff8.focal (it looks like it's going further, but ends up with nginx not serving Inventree as well)

I will start from a fresh install, as it could have been messed up with all my trials

Also just in case for others, in the scripts suggested bu @dspmathguru there are 2 typo errors in the etc/nginx/sites-enables/ lines which should be enableD (with a D, not a S)

[ctft1]

And just to be sure, should I:

• First run the Quick Script (one line installer)
• Then run the purge / rm / install command?

[ctft1]

Ok it's working by installing with the Quick Script, then stopping nginx (sudo systemctl stop nginx) and then running the following commands (fixed the typo + removed the default nginx config copy)

sudo apt purge inventree
sudo rm -rf /opt/inventree
sudo rm -rf /home/inventree
sudo rm -rf /etc/inventree
sudo rm /etc/nginx/sites-enabled/inventree.conf
sudo apt install inventree=0.12.8-1698964278.a7487ff8.focal

This will fine for having the 0.12.8 version working
But then the 0.13.0 update (inventree run invoke update) would fail and end with the 502 error on nginx

One interesting thing: this could be related to a wrong python version as the script stops with a RuntimeError: InvenTree requires Python 3.9 or above - you are running version 3.8.10.

(whereas Python 3.9 seems to be installed on my Ubuntu 20.04), I can see both folders in /usr/bin/

[ctft1]

Ok looks like this was related to Python version (3.8 instead of 3.9). Here is how I could run my 0.13.0 starting from a fresh up-to-date Ubuntu 20.04 server

First running the Quick Install script

sudo su -
wget -qO install.sh https://get.inventree.org && bash install.sh

The Inventree http server should return a 502, let's go back to 0.12.8 version

sudo systemctl stop nginx
sudo apt purge inventree
sudo rm -rf /opt/inventree
sudo rm -rf /home/inventree
sudo rm -rf /etc/inventree
sudo rm /etc/nginx/sites-enabled/inventree.conf
sudo apt install inventree=0.12.8-1698964278.a7487ff8.focal

You should now have an Inventree working on your http, but on 0.12.8 version
We run the Quick Script again, it will still fail running the nginx server, but will install some dependencies

wget -qO install.sh https://get.inventree.org && bash install.sh

You have now 2 versions on python installed (3.8 and 3.9) and Inventree 0.13 requires the 3.9
Let's configure to use the 3.9 for the "python3" command by adding alternatives

sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.9 1
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.8 2

Now let's choose the right version by default (choose the 3.9 in the list with it's number displayed)

sudo update-alternatives --config python3

Check python3 is on the 3.9.x version

python3 --version

Now we can update the Inventree to latest version (0.13.0 currently), then restart

inventree run invoke update
sudo reboot now

You should have a working 0.13.0 fresh install
It's maybe not optimized with all my commands, but at least it's working