Tips und Tricks zum Raspberry Pi
Visuelle Erkennung des PIs im Cluster
Quelle: https://blog.codybunch.com/2020/10/12/Visually-Identify-Raspberry-Pi-In-A-Cluster/
Test for LED Trigger
$ cat /sys/class/leds/led0/trigger
none rc-feedback kbd-scrolllock kbd-numlock kbd-capslock
kbd-kanalock kbd-shiftlock kbd-altgrlock kbd-ctrllock
kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock
kbd-ctrlrlock timer oneshot heartbeat backlight gpio cpu
cpu0 cpu1 cpu2 cpu3 default-on input panic actpwr [mmc0]
rfkill-any rfkill-none
Enable the ledtrig_heatbeat
$ sudo su -
# modprobe ledtrig_heartbeat
Set LED0 to blinking
# echo "heartbeat" > /sys/class/leds/led0/trigger
# cat /sys/class/leds/led0/trigger
none rc-feedback kbd-scrolllock kbd-numlock kbd-capslock
kbd-kanalock kbd-shiftlock kbd-altgrlock kbd-ctrllock
kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock
kbd-ctrlrlock timer oneshot [heartbeat] backlight gpio cpu
cpu0 cpu1 cpu2 cpu3 default-on input panic actpwr mmc0
rfkill-any rfkill-none
Reset back to SD Card Access
# echo "mmc0" > /sys/class/leds/led0/trigger
# cat /sys/class/leds/led0/trigger
none rc-feedback kbd-scrolllock kbd-numlock kbd-capslock
kbd-kanalock kbd-shiftlock kbd-altgrlock kbd-ctrllock
kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock
kbd-ctrlrlock timer oneshot heartbeat backlight gpio cpu
cpu0 cpu1 cpu2 cpu3 default-on input panic actpwr [mmc0]
rfkill-any rfkill-none