# Use public servers from the pool.ntp.org project.
{% for HOST in ntp_servers %}
server {{ HOST }} iburst
{% endfor %}
pool pool.ntp.org iburst
pool 2.debian.pool.ntp.org iburst

# 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

# 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

# Specify directory for dumping measurements.
dumpdir /var/lib/chrony

# This directive lets 'chronyd' to serve time even if unsynchronised to any NTP server.
local stratum 10

# This directive designates subnets (or nodes) from which NTP clients are allowed
# to access to 'chronyd'.
allow {{ local_network }}

# Stop bad estimates upsetting machine clock.
maxupdateskew 100.0

# Ignor source level
stratumweight 0

# Comment this line out to turn off logging.
#log tracking measurements statistics
logdir /var/log/chrony
log statistics measurements tracking
noclientlog