How to setup chrony

chrony is an implementation of the Network Time Protocol and helps to keep your computer's time synchronized with NTP.

​🐣 1. Installation

Install chrony.

sudo apt-get install chrony -y

Create the chrony.conf config file. Simply copy and paste the following.

cat > $HOME/chrony.conf << EOF
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
EOF

Move the file to /etc/chrony/chrony.conf

sudo mv $HOME/chrony.conf /etc/chrony/chrony.conf

Restart chrony in order for config change to take effect.

systemctl restart chronyd.service

​🤖 2. Helpful Commands

To see the source of synchronization data.

chronyc sources

To view the current status of chrony.

chronyc tracking

​🔥 Bonus Commands

Your server might be using the default timezone UTC.

Find your timezone tz name. Format appears as "Asia/Singapore"

timedatectl list-timezones

Set your timezone.

sudo timedatectl set-timezone Europe/Isle_of_Man