# Use NTP servers from DHCP. sourcedir /run/chrony-dhcp # Include configuration found in /etc/chrony.d/*.conf confdir /etc/chrony.d # Use NTP sources found in /etc/chrony.d/*.sources sourcedir /etc/chrony.d # Record the rate at which the system clock gains/losses time. driftfile /var/lib/chrony/drift # Allow the system clock to be stepped in the first three updates # if its offset is larger than 1 second. makestep 1.0 3 # Enable kernel synchronization of the real-time clock (RTC). rtcsync # Enable hardware timestamping on all interfaces that support it. #hwtimestamp * # Increase the minimum number of selectable sources required to adjust # the system clock. #minsources 2 # Allow NTP client access from local network. #allow 192.168.0.0/16 # Serve time even if not synchronized to a time source. #local stratum 10 # Require authentication (nts or key option) for all NTP sources. #authselectmode require # Specify file containing keys for NTP authentication. keyfile /etc/chrony.keys # Insert/delete leap seconds by slewing instead of stepping. #leapsecmode slew # Get TAI-UTC offset and leap seconds from the system tz database. # Clients of leap smearing servers must not use this directive. #leapsectz right/UTC # Specify directory for log files. logdir /var/log/chrony # Select which information is logged. log measurements statistics tracking