Ntpq commands ordinary users to execute error reporting Servname not su
The requested URL/usr/sbin/ntpq-pn was not found on this server.
Servname not supported for ai_socktype
Check point:
1. Check the/etc/services file for ports
ntp 123/tcp
ntp 123/udp # Network Time Protocol
2. Check whether permission is given. Other groups have read permission. Permission can be modified to 644.