Upgrade script for 3.5.3 fails with could not create unique index

[stevenwinfough]

Hello all,

I was updating my 3.3.8 working installation to 3.5.3 and now I'm getting the following error:

Running migrations:
Applying dcim.0162_unique_constraints...Traceback (most recent call last):
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 87, in _execute
return self.cursor.execute(sql)
psycopg2.errors.UniqueViolation: could not create unique index "dcim_device_unique_name_site"
DETAIL: Key (lower(name::text), site_id)=(cisco 3925, 1) is duplicated.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/opt/netbox-3.5.3/netbox/manage.py", line 10, in
execute_from_command_line(sys.argv)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/core/management/init.py", line 446, in execute_from_command_line
utility.execute()
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/core/management/init.py", line 440, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/core/management/base.py", line 402, in run_from_argv
self.execute(*args, **cmd_options)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/core/management/base.py", line 448, in execute
output = self.handle(*args, **options)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/core/management/base.py", line 96, in wrapped
res = handle_func(*args, **kwargs)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/core/management/commands/migrate.py", line 349, in handle
post_migrate_state = executor.migrate(
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/migrations/executor.py", line 135, in migrate
state = self._migrate_all_forwards(
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/migrations/executor.py", line 167, in _migrate_all_forwards
state = self.apply_migration(
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/migrations/executor.py", line 252, in apply_migration
state = migration.apply(state, schema_editor)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/migrations/migration.py", line 130, in apply
operation.database_forwards(
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/migrations/operations/models.py", line 1040, in database_forwards
schema_editor.add_constraint(model, self.constraint)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/backends/base/schema.py", line 515, in add_constraint
self.execute(sql, params=None)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/backends/base/schema.py", line 199, in execute
cursor.execute(sql, params)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 67, in execute
return self._execute_with_wrappers(
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 80, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 84, in _execute
with self.db.wrap_database_errors:
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/utils.py", line 91, in exit
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/opt/netbox-3.5.3/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 87, in _execute
return self.cursor.execute(sql)
django.db.utils.IntegrityError: could not create unique index "dcim_device_unique_name_site"
DETAIL: Key (lower(name::text), site_id)=(cisco 3925, 1) is duplicated.

Please help! I do not know how to fix this issue.

Thanks in advance.

[candlerb]

This is the same as #12793 and #12332 - for more details see those discussions.

In short, you have two devices with similar names, maybe "cisco 3925" and "Cisco 3925", in the same site (id=1). If you check the release notes for v3.4.0 under "Breaking Changes":

Device and virtual machine names are no longer case-sensitive. Attempting to create e.g. "device1" and "DEVICE1" within the same site will raise a validation error.

You need to rename one of those devices.

[stevenwinfough]

Thank you for your response. It is greatly appreciated.