File: //lib/systemd/system/ntpd.service
[Unit]
Description=Network Time Service
Documentation=man:ntpd(8)
Wants=network.target
ConditionCapability=CAP_SYS_TIME
After=network.target nss-lookup.target
Conflicts=systemd-timesyncd.service
[Service]
Type=forking
PrivateTmp=true
ExecStart=/usr/sbin/ntpd -g -N -u ntp:ntp
# Specifying -g on the command line allows ntpd to make large adjustments to
# the clock on boot. However, if Restart=yes is set, a malicious (or broken)
# server could send the incorrect time, trip the panic threshold, and when
# ntpd restarts, serve it the incorrect time (which would be accepted).
Restart=no
[Install]
WantedBy=multi-user.target