Here I describe a way I configure time server on a Ubuntu machine.
It’s not a preferable or right way but I am just used to set up time servers like that.
Installing
Simplest way to install chrony is to download package from apt repository:
sudo apt install chrony- test
Configuring
chrony configure file is located here:
/etc/chrony/chrony.conf
You can keep default settings that are provided by package maintainer, but I usually change default pool addresses.
Default NTP pool servers:
pool ntp.ubuntu.com iburst maxsources 4
pool 0.ubuntu.pool.ntp.org iburst maxsources 1
pool 1.ubuntu.pool.ntp.org iburst maxsources 1
pool 2.ubuntu.pool.ntp.org iburst maxsources 2
I change them to be as follows:
server 0.pool.ntp.org iburst
server 1.pool.ntp.org iburst
server 2.pool.ntp.org iburst
server 3.pool.ntp.org iburst
After changing setting you need to restart chrony service:
sudo systemctl restart chrony
Changing timezone
By using timedatectl set-timezone you can change timezone.
sudo timedatectl set-timezone Etc/UTC
You can see all available timezones via:
timedatectl list-timezones
Checking chrony stats
To check chrony stats you can write:
chronyc sources
Summing up
sudo apt install chronysudo nano /etc/chrony/chrony.conf- Change default NTP pool servers:
server 0.pool.ntp.org iburst server 1.pool.ntp.org iburst server 2.pool.ntp.org iburst server 3.pool.ntp.org iburst sudo systemctl restart chrony