Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Server Status with Keyboard LEDs

Server Status with Keyboard LEDs

This page describes how you can use keyboard LEDs to monitor the status of a linux server. This is very handy have a number of linux servers at home, and typically want to be able to monitor the status of them remotely.
All my servers run various flavours of linux, and typically run headless (ie, no monitor/keyboard/mouse), but are accessed remotely via SSH and/or HTTP.

While it would be possible to connect a small LCD to a server, and write some software to display status information on the LCD, this required a lot more effort and expense than I was prepared to expend.

Instead, I use some software running on each linux box, to toggle the keyboard LEDs on and off to indicate status information. Instead of having a full-size keyboard plugged into each server, I disassemble the keyboard, and remove all the unnecessary components, leaving just the circuitry required for controlling the LEDs.

The standard LEDs are replaced with new LEDs that are easier to mount, and an additional power LED is added, allowing the three LEDs (NumLock, CapsLock, ScrollLock) to be used to indicate various status information.

The relatively long PS/2 cable on most keyboards is ideal for remotely mounting the LED display remotely from the linux box.

Visit Here for more.

 

More Articles to Read

ESP8266 Weather Station Projects
ESP8266 Weather Station Projects
Free PCB coupon via Facebook to 2 random commenters
Free PCB coupon via Facebook to 2 random commenters
Single tube Lethal Nixie clock
Single tube Lethal Nixie clock
How to make a simple 1 watt audio amplifier (LM386 based)
How to make a simple 1 watt audio amplifier (LM386 based)
Flashing Binaries to DRA7xx Factory Boards Using Device Firmware Upgrade
Flashing Binaries to DRA7xx Factory Boards Using Device Firmware Upgrade
Dot² isn’t your typical coffee table
Dot² isn’t your typical coffee table
Debugging ARM Cortex-M0+ HardFaults
Debugging ARM Cortex-M0+ HardFaults
EMP Jammer build
EMP Jammer build
A 3D-printed e-drum pad
A 3D-printed e-drum pad
Interactive geodesic LED dome = extreme geometric fun!
Interactive geodesic LED dome = extreme geometric fun!

Top




Shares