An apache2 process got stuck on my server and caused problems with other services. (original problem: kerneloops after USB hardware disconnect)
root@server:~# ps aux | grep apache2 | grep -v grep www-data 12917 0.0 0.1 412148 16156 ? D Jun27 0:00 /usr/sbin/apache2 -k start
killd it. it's still alive. so I
kill -9d it. It's still "alive".
Now this is where the question gets serverfault/unix&linux-worthy: Is there a way to get port 443 back without doing the obvious thing: rebooting? Iptables is installed.
Update: I could not resolve the Problem withouth rebooting. The general approach (use
/proc/$PID/fd to find out which and get rid of that drive) as described here and in the "duplicate" could well have worked if not for additional (probably) hardware defects.