#Linux setting the zone file time install

Reference ID is the ID and name of server to which your system’s time currently synced.

System time : 0.000174314 seconds slow of NTP time To verify whether your system’s time is synchronized using chrony, issue the following command, ~]# chronyc tracking Run the beneath command to verify the chronys service status ~]# systemctl enable chronyd Run the following commands to start and enable chronyd daemon so that it will be available across the reboots. Syntax: # chronyd -q ‘server iburst’Įxample: ~]# chronyd -q 'server 0. iburst'Īs we can see in above output, chrony has corrected the system time, before running the chronyd command system time was almost 2 hours behind from accurate time. Just like ntpdate command in NTP distribution, we can use chronyd to sync time of our Linux server with remote NTP server manually,

logdir /var/log/chrony, it is the log file which logs of Chrony.

keyfile /etc/chrony.keys as the name suggest this file contains keys for NTP authentication.

makestep 1.0 3 is the parameter which will step system clock (speedup or slow down) if adjustment is larger than 1 second but only for first 3 clock updates.driftfile /var/lib/chrony/drift is the drift file which contains drift data.pool 0. iburst is the remote NTP server from where chrony will fetch the time.chronyd : It is daemon for chrony which start and enable chrony service across the reboot.Ĭonfiguration file for Chrony is “ /etc/nf”, sample nf file is listed below, ~]# cat /etc/nf.chronyc : It is command line interface of chrony.Once the chrony is installed on Linux server then it offers two programs,

#Linux setting the zone file time install

To install Chrony on Debian and Ubuntu Systems, run the following apt command, ~]$ sudo apt install chrony -y The output includes the time zone, in this example that is “EST”.~]# dnf install chrony -y Install Chrony on Debian / Ubuntu System Verify it either by listing the /etc/localtime file or invoking the date : sudo ln -s /usr/share/zoneinfo/America/New_York /etc/localtime Identify the timezone you want to configure and create a symlink If you are running an older Linux distributionĪnd the timedatectl utility is not present on your system, you can change the timezone by symlinking /etc/localtime to the time zone in the /usr/share/zoneinfo directory. Changing the Time Zone by Creating a Symlink # Mission accomplished! You’ve successfully changed your system’s time zone. To verify the change, invoke the timedatectl command again: timedatectl Local time: Tue 13:55:09 EST Once you identify which time zone is accurate to your location, run the following command as root or sudoįor example, to change the system’s timezone to America/New_York you would type: sudo timedatectl set-timezone America/New_York To view all available time zones, use the timedatectl command or list the files in the /usr/share/zoneinfo directory: timedatectl list-timezones. The time zone naming convention usually uses a “Region/City” format. The system time zone is configured by symlinking the /etc/localtime file to a binary time zone’s identifier in the /usr/share/zoneinfo directory.Īnother way to check the time zone is to view the path the symlink points to using the lsĬommand: ls -l /etc/localtime lrwxrwxrwx 1 root root 27 Dec 3 16:29 /etc/localtime -> /usr/share/zoneinfo/Etc/UTCīefore changing the time zone, you’ll need to find out the long name of the time zone you want to use.

The output above shows that the system’s time zone is set to UTC. To view the current time zone, invoke the timedatectl command without any options or arguments: timedatectl Local time: Tue 16:30:44 UTC It is available on all modern systemd-based Linux systems.

Timedatectl is a command-line utility that allows you to view and change the system’s time and date. This tutorial covers the steps necessary to set or change the time zone in Linux. The time zone is also used for logs timestamps. For example, the cron daemon uses the system’s time zone for executing cron jobs. Using the correct time zone is essential for many systems related tasks and processes. Typically the time zone is set during the installation of the operational system, but it can be easily changed at a later time. A time zone is a geographic region that has the same standard time.