I was running ntpd locally on a server and wanted to check in on ntpd's status. ntpq -p was not producing any output even though ntpd was running.
# ntpq -p localhost: timed out, nothing received ***Request timed out
This is because I had the option "restrict default ignore" set in /etc/ntp.conf. ntpq. This makes ntpd ignore EVERYTHING, even queries to the loopback interface. Ntpq queries ntpd over the loopback interface at 127.0.0.1. To allow these local queries, add:
to /etc/ntp.conf, then also add restrict lines for your other upstream ntp servers.
Now ntpq -p will show you status of it's peers
# ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== dns3.untangle.c .INIT. 16 u - 64 0 0.000 0.000 0.000 mirror .INIT. 16 u - 64 0 0.000 0.000 0.000 126.96.36.199 .INIT. 16 u - 64 0 0.000 0.000 0.000