Chrony config for Cardano nodes

chrony.conf

pool time.google.com       iburst minpoll 1 maxpoll 2 maxsources 3
pool ntp.ubuntu.com        iburst minpoll 1 maxpoll 2 maxsources 3
pool us.pool.ntp.org       iburst minpoll 1 maxpoll 2 maxsources 3

# This directive specify the location of the file containing ID/key pairs for
# NTP authentication.
keyfile /etc/chrony/chrony.keys

# This directive specify the file into which chronyd will store the rate
# information.
driftfile /var/lib/chrony/chrony.drift

# Uncomment the following line to turn logging on.
#log tracking measurements statistics

# Log files location.
logdir /var/log/chrony

# Stop bad estimates upsetting machine clock.
maxupdateskew 5.0

# This directive enables kernel synchronisation (every 11 minutes) of the
# real-time clock. Note that it can’t be used along with the 'rtcfile' directive.
rtcsync

# Step the system clock instead of slewing it if the adjustment is larger than
# one second, but only in the first three clock updates.
makestep 0.1 -1