He meant it as a figure of speech but I thought that would actually be an awesome addition for my server shelf so I would know if there is a problem with the server or one of its virtual machines.
I bought a roll of RGB LED strips from Amazon and connected them to a few relays that were controlled by a simple ping script on my raspberry pi.
Here is how it looks:
|Cut LED strip that is mounted above Server 2|
|Strip in front of Server 1|
Cable management is yet to come
This is how it looks if Server 1 has an error but Server 2 is fine. Only after I installed it I realized that the red LEDs are much weaker than the green ones. But it's okay and you can see if fine even if the sun shines in.
|One offline, the other one online|
|Both are online|
Here are my schematics:
And the breadboard schematics: