Bug#1034494: unbound: Unbound fails to create pid file even when pidfile specified in /etc/unbound/unbound.conf or /etc/init.d/unbound

[Simon Deziel]

When managed by systemd, unbound is started with the "-p" argument that 
tells it to not create a PID file at all. I don't know what use you have 
for the PID but you can obtain it with:

> systemctl show --property MainPID --value unbound
That's of course assuming unbound is managed by systemd.

HTH,
Simon