debian emergency reboot

Question

Debian

Hello! The server hangs, it is possible to connect via ssh, but neither reboot nor shutdown with any parameters work. This has already happened, a certain command that sent some command to the kernel helped. I've looked all over and can't find it. Let me know, thanks in advance!

Answer 1

Found! Thanks to all!

echo 1 > /proc/sys/kernel/sysrq
echo b > /proc/sysrq-trigger

Answer 2

uh ....
You shouldn't be so)
This is how you better do it.