23.04 - Power connection fails to be added on switches that have a parent chassis.

[grebekel]

Describe the bug
I have a 1U chassis (a metal box without electronics) where two switches can be loaded side by side. Each switch is fully functional on its own and the chassis is only there to hold the switches in place.

Having two independent devices coexist on the same rack unit seems like a special case for OpenDCIM, so I thought I could use a chassis.

To add this to our OpenDCIM instance, I opened the rack and created a 1U chassis with zero power connections and two front slots. Then I created one switch from the chassis view, and configured the power connections on the switch by clicking on the power connection number, select the APC device and port, then clicked save. The input fields remain in-place and reloading the page shows the power connection was not saved.

To Reproduce

1. Create a 1U Chassis with power connections set to zero.
2. Open the newly created Chassis.
3. On the "Chassis Contents" panel, set the front number of slots in chassis to 2.
4. On the "Chassis Contents" panel, click on "Add Device".
5. Create a 1U "switch" with 1 power connection.
6. Open the switch page and add a power connection, select device and port, then click save.
7. Refresh the page, notice the connection is no longer there.

Were you able to reproduce this on the dev or demo sites?

• Yes, see switch and chassis below.
• Switch
• Chassis
• Normal Switch with power connections

Expected behavior
Power connection on switch is saved, regardless of it being installed on a chassis.

Desktop (please complete the following information):

• OS: Windows 11
• Browser: Brave 1.81.136

[wilpig]

I'll look into that specific issue, it sounds like a bug we fixed a while back when some devices were created and didn't make corresponding entries in the power connections table. What version are you running? We do allow multiple power supplies for a chassis but you couldn't tie that to your specific slot contents. What you can use here is a poorly documented special chassis case we call tray.

Rack showing shelf example:
https://dev.opendcim.org/cabnavigator.php?cabinetid=3

Shelf example:
https://dev.opendcim.org/devices.php?DeviceID=2134

Horizontal placed devices on a shelf
https://dev.opendcim.org/device_templates.php?TemplateID=29

Vertically stacked devices on a shelf
https://dev.opendcim.org/device_templates.php?TemplateID=30

[grebekel]

I'm running 20.02 but checked the issue is present on demo site 23.04.

Thanks for suggesting trays, I didn't know about them and seem more suitable for my needs. They do show the same behavior as normal chassis in terms of power connections.