backend not found

[kmendell]

I have Zentral running and my device syncs to it, but when i try to connect/sync other devices (using santa) it just does not work

I see this error in the logs, im not sure what is causing this:

workers-1 | 2024-06-25 13:31:45,823 PID1 config DEBUG Get /apps/zentral.contrib.inventory/clients/0/backend config key
workers-1 | Traceback (most recent call last):
workers-1 | File "/zentral/server/manage.py", line 10, in
workers-1 | execute_from_command_line(sys.argv)
workers-1 | File "/opt/venv/lib/python3.10/site-packages/django/core/management/init.py", line 442, in execute_from_command_line
workers-1 | utility.execute()
workers-1 | File "/opt/venv/lib/python3.10/site-packages/django/core/management/init.py", line 436, in execute
workers-1 | self.fetch_command(subcommand).run_from_argv(self.argv)
workers-1 | File "/opt/venv/lib/python3.10/site-packages/django/core/management/base.py", line 412, in run_from_argv
workers-1 | self.execute(*args, **cmd_options)
workers-1 | File "/opt/venv/lib/python3.10/site-packages/django/core/management/base.py", line 458, in execute
workers-1 | output = self.handle(*args, **options)
workers-1 | File "/zentral/server/base/management/commands/runworkers.py", line 120, in handle
workers-1 | for idx, worker in enumerate(sorted(get_workers(), key=lambda w: w.name)):
workers-1 | File "/zentral/zentral/core/queues/workers.py", line 17, in get_workers
workers-1 | workers_module = import_module("{}.workers".format(app))
workers-1 | File "/usr/local/lib/python3.10/importlib/init.py", line 126, in import_module
workers-1 | return _bootstrap._gcd_import(name[level:], package, level)
workers-1 | File "", line 1050, in _gcd_import
workers-1 | File "", line 1027, in _find_and_load
workers-1 | File "", line 1006, in _find_and_load_unlocked
workers-1 | File "", line 688, in _load_unlocked
workers-1 | File "", line 883, in exec_module
workers-1 | File "", line 241, in _call_with_frames_removed
workers-1 | File "/zentral/zentral/contrib/inventory/workers.py", line 3, in
workers-1 | from .clients import clients, InventoryError
workers-1 | File "/zentral/zentral/contrib/inventory/clients/init.py", line 13, in
workers-1 | clients = list(get_clients(settings))
workers-1 | File "/zentral/zentral/contrib/inventory/clients/init.py", line 9, in get_clients
workers-1 | module = import_module(inv_cli_settings['backend'])
workers-1 | File "/zentral/zentral/conf/config.py", line 272, in getitem
workers-1 | value = self._collection[key]
workers-1 | KeyError: 'backend'

[np5]

It seems that you have an error in the configuration of your inventory clients in base.json. Could you verify this ? Are you pulling inventory information from third party sources like another MDM ?

[kmendell]

it ended up being a "empty" backend source, i removed the dummy data source, but left the backend array there, so it was failing to find a source , removing that whole section seemed to fix it

[np5]

Thanks