Install Command Fails, Usually Segmentation fault

[firstkevinds]

NetBox version

v2.11.9

Python version

3.7

Steps to Reproduce

Hyper-V 2012r2 Host.
Debian 10.10 Guest OS
Dynamic or Fixed RAM makes no difference.

ESXi Host, install is flawless.

https://netbox.readthedocs.io/en/stable/installation/

Option B during NetBox installation.

The sudo /opt/netbox/upgrade.sh command always fails, rarely at the same place.

T

Expected Behavior

I expected the command to complete successfully.

Observed Behavior

Applying secrets.0003_unicode_literals... OK Applying secrets.0004_tags... OK Applying secrets.0005_change_logging...Traceback (most recent call last): File "netbox/manage.py", line 10, in <module> execute_from_command_line(sys.argv) File "/opt/netbox/venv/lib/python3.7/site-packages/django/core/management/__init__.py", line 419, in execute_from_command_line utility.execute() File "/opt/netbox/venv/lib/python3.7/site-packages/django/core/management/__init__.py", line 413, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/opt/netbox/venv/lib/python3.7/site-packages/django/core/management/base.py", line 354, in run_from_argv self.execute(*args, **cmd_options) File "/opt/netbox/venv/lib/python3.7/site-packages/django/core/management/base.py", line 398, in execute output = self.handle(*args, **options) File "/opt/netbox/venv/lib/python3.7/site-packages/django/core/management/base.py", line 89, in wrapped res = handle_func(*args, **kwargs) File "/opt/netbox/venv/lib/python3.7/site-packages/django/core/management/commands/migrate.py", line 246, in handle fake_initial=fake_initial, File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/migrations/executor.py", line 117, in migrate state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwards state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/migrations/executor.py", line 227, in apply_migration state = migration.apply(state, schema_editor) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/migrations/migration.py", line 116, in apply operation.state_forwards(self.app_label, project_state) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/migrations/operations/fields.py", line 234, in state_forwards state.reload_model(app_label, self.model_name_lower, delay=delay) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/migrations/state.py", line 156, in reload_model self._reload(related_models) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/migrations/state.py", line 189, in _reload self.apps.render_multiple(states_to_be_rendered) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/migrations/state.py", line 305, in render_multiple model.render(self) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/migrations/state.py", line 572, in render return type(self.name, bases, body) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/models/base.py", line 161, in __new__ new_class.add_to_class(obj_name, obj) File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/models/base.py", line 326, in add_to_class value.contribute_to_class(cls, name) File "/opt/netbox/venv/lib/python3.7/site-packages/taggit/managers.py", line 515, in contribute_to_class resolve_related_class, cls, self.through, field=self File "/opt/netbox/venv/lib/python3.7/site-packages/django/db/models/fields/related.py", line 80, in lazy_related_operation return apps.lazy_model_operation(partial(function, **kwargs), *model_keys) UnboundLocalError: local variable 'function' referenced before assignment

But usually just a Segmentation fault,

Applying dcim.0090_cable_termination_models... OK Applying dcim.0091_interface_type_other... OK Applying dcim.0092_fix_rack_outer_unit... OK Applying dcim.0093_device_component_ordering.../opt/netbox/upgrade.sh: line 62: 9988 Segmentation fault python3 netbox/manage.py migrate

[jeremystretch]

Per the note displayed when opening an issue, please don't open bug reports for help with installation issues.

[firstkevinds]

Sorry

[candlerb]

Hyper-V 2012r2 Host. [install is broken]
...
ESXi Host, install is flawless.

I think you have your answer there.

A segmentation fault means typically:

• a hardware fault, e.g. bad RAM. There is an old sig 11 FAQ which goes into more detail.
• the binary you are running (python in this case) is broken. But presumably you are using the same version of the python binary from Debian 10 in both cases, which rules that out.

You didn't say if your Hyper-V and ESXi installations were on the same physical hardware, or different hardware. Even if it were the same hardware, they could be mapping different pages, so the fault may be more visible in one case or the other.

It's possible it's a bug in HyperV, but then it would be unlikely to be something you can trigger but nobody else has noticed. It's possible this is a known bug and your 2012r2 host is missing some patches. Apart from that, it seems to me this is most likely a hardware fault.

To prove this one way or the other: install the exact same version of 2012r2 and Hyper-V on a completely different server, and install Debian 10 guest and Netbox in the same way as before.

Another way you can prove that this is nothing to do with Netbox is to run some other resource-intensive application, such as compiling a kernel. If it crashes in random places then you're seeing the behaviour described in the sig 11 FAQ.