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Server Error #1957

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opened 2025-12-29 17:20:56 +01:00 by adam · 4 comments
adam commented 2025-12-29 17:20:56 +01:00
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Originally created by @vzaletny on GitHub (Aug 21, 2018).

Environment

  • Python version: 2.7.5
  • NetBox version: 2.4.3
  • CentOS Linux release 7.5.1804 (Core)
  • Google Chrome 68.0.3440.106

Steps to Reproduce

Hi guys!

Wheh I try to open VM inteface configuration, button "Edit this interface" I'm getting an error.

Expected Behavior

Change an interface configuration.

Observed Behavior

There was a problem with your request. Please contact an administrator.
The complete exception is provided below:
<class 'AttributeError'>
'NoneType' object has no attribute 'get_vc_master'

Originally created by @vzaletny on GitHub (Aug 21, 2018). ### Environment * Python version: 2.7.5 * NetBox version: 2.4.3 * CentOS Linux release 7.5.1804 (Core) * Google Chrome 68.0.3440.106 ### Steps to Reproduce Hi guys! Wheh I try to open VM inteface configuration, button "Edit this interface" I'm getting an error. ### Expected Behavior Change an interface configuration. ### Observed Behavior There was a problem with your request. Please contact an administrator. The complete exception is provided below: <class 'AttributeError'> 'NoneType' object has no attribute 'get_vc_master'
adam added the type: bugstatus: accepted labels 2025-12-29 17:20:56 +01:00
adam closed this issue 2025-12-29 17:20:56 +01:00
adam commented 2025-12-29 17:20:56 +01:00
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@jeremystretch commented on GitHub (Aug 21, 2018):

Unable to reproduce on v2.4.3. Please list the exact steps someone else can take to reproduce this bug, beginning with the creation of a new virtual machine.

@jeremystretch commented on GitHub (Aug 21, 2018): Unable to reproduce on v2.4.3. Please list the exact steps someone else can take to reproduce this bug, beginning with the creation of a new virtual machine.
adam commented 2025-12-29 17:20:57 +01:00
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@vzaletny commented on GitHub (Aug 22, 2018):

I am sorry, that was my PC environment, but on NetBox are running:
CentOS Linux release 7.5.1804 (Core)
Python 2.7.5.

  1. Create VM.
  2. Add an interface.
  3. Click on the interface name.
  4. Click button "Edit this interface".
  5. Get above error.

But if I click on the pencil icon "Edit interface" on the right , the editing interface page comes out as it should.
Thanks.

@vzaletny commented on GitHub (Aug 22, 2018): I am sorry, that was my PC environment, but on NetBox are running: CentOS Linux release 7.5.1804 (Core) Python 2.7.5. 1. Create VM. 2. Add an interface. 3. Click on the interface name. 4. Click button "Edit this interface". 5. Get above error. But if I click on the pencil icon "Edit interface" on the right , the editing interface page comes out as it should. Thanks.
adam commented 2025-12-29 17:20:57 +01:00
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@vzaletny commented on GitHub (Aug 22, 2018):

I have tried to do the same changes on our production system and got the same error.
The production environment is similar.

@vzaletny commented on GitHub (Aug 22, 2018): I have tried to do the same changes on our production system and got the same error. The production environment is similar.
adam commented 2025-12-29 17:20:57 +01:00
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@candlerb commented on GitHub (Aug 22, 2018):

How to reproduce:

  • Navigate to any VM
  • In the table of interfaces, click on the name of the interface (e.g. "eth0" - not the icons on the right). This takes you to /dcim/interfaces/NN/
  • Click on "Edit this interface" button
  • You get an exception when it tries to display /dcim/interfaces/NN/edit/ (where NN is an interface on a VM, not a device)

I believe the solution is:

  1. The interface name should link to /virtualization/vm-interfaces/NN/ not /dcim/interfaces/NN/
  2. This page doesn't exist yet, so it needs to be created
@candlerb commented on GitHub (Aug 22, 2018): How to reproduce: * Navigate to any VM * In the table of interfaces, click on the *name* of the interface (e.g. "eth0" - *not* the icons on the right). This takes you to `/dcim/interfaces/NN/` * Click on "Edit this interface" button * You get an exception when it tries to display `/dcim/interfaces/NN/edit/` (where NN is an interface on a VM, not a device) I believe the solution is: 1. The interface name should link to `/virtualization/vm-interfaces/NN/` not `/dcim/interfaces/NN/` 2. This page doesn't exist yet, so it needs to be created
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