Edit file /etc/ntp.conf
#Enable NTP statistics
statsdir /var/log/ntpstats/
statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable
Restart ntp service. If it shows the following message, the directory /var/log/ntpstats has wrong permissions
May 21 14:56:40 linux ntpd[11202]: can’t open /var/log/ntpstats/peerstats.20150521: Permission denied
ntpd is running under user ntp
root@linux:~ # ps -ef | grep ntp
ntp 31445 1 0 15:05 ? 00:00:00 ntpd -u ntp:ntp -p /var/run/ntpd.pid -g
Change the permission as needed
root@linux:~ # ls -ld /var/log/ntpstats
drwxr-xr-x 2 ntp ntp 4096 May 21 15:00 /var/log/ntpstats
setaOffice 