Time synchronization is the most vital part of on AlmaLinux / Rocky Linux / Amazon Linux. The configuration of time sync is straight forward using NTP (Network Time Protocol). It includes some couple of commands that works fine with the time synchronization. Keeping different clocks running into a same severs is a quite interesting task to keep running your system time up to date.
When any user login to your system so it is so important task to note the user login time according to the local time of that system time zone. Most of the services are running in different time zones so it is vital need to run the system with accurate time.
Step-1 : Check the different available time zones and Set your Time Zone from different timezone
List the timezone that are available
$ sudo timedatectl list-timezones
Set your location timezone
$ sudo timedatectl Asia/Kolkata
Step-2 : Sync time using NTP daemons
There are two types of NTP daemons including chronyd and ntpd. You should select and use only one to avoid running two NTP daemons at a same time on same machine this cause ntp incompatibility and instability using two NTP daemons at same time.
This tutorial includes two NTP daemons you should select any one:
- Sync time using chronyd and it is suitable for virtual system.
- Sync time using ntpd and it is suitable for networking system.
Step-3 : Sync time using chronyd
Install the chronyd package
$ sudo yum install chrony
Start the chronyd services
$ sudo systemctl start chrnoyd
Edit the configuration file
$ sudo vi /etc/chrony.conf
Add these lines
1st Option
server 0.centos.pool.ntp.org iburst
server 1.centos.pool.ntp.org iburst
server 2.centos.pool.ntp.org iburst
server 3.centos.pool.ntp.org iburst
2nd Option
server 0.rhel.pool.ntp.org iburst
server 1.rhel.pool.ntp.org iburst
server 2.rhel.pool.ntp.org iburst
server 3.rhel.pool.ntp.org iburst
After adding these lines simply save and exit.
Restart the services to make changes in effect.
$ sudo systemctl restart chrnoyd
Enable this services to run at every boot.
$ sudo systemctl enable chrnoyd
Step-4 : Sync time using ntpd
Install the ntpd package
$ sudo yum install ntp
Start the ntpd services
$ sudo systemctl start ntpd
Edit the configuration file
$ sudo vi /etc/ntp.conf
Add these lines
1st Options
server 0.centos.pool.ntp.org iburst
server 1.centos.pool.ntp.org iburst
server 2.centos.pool.ntp.org iburst
server 3.centos.pool.ntp.org iburst
2nd Options
server 0.rhel.pool.ntp.org iburst
server 1.rhel.pool.ntp.org iburst
server 2.rhel.pool.ntp.org iburst
server 3.rhel.pool.ntp.org iburst
After adding these lines simply save and exit.
Restart the services to make changes in effect.
$ sudo systemctl restart ntpd
Enable this services to run at every boot.
$ sudo systemctl enable ntpd
Congratulations now you have configured sync time with timezone on AlmaLinux / Rocky Linux / Amazon Linux.
