RHCSA: how to configure NTP Network Time Protocol in Red Hat
This is part 8 of the Red Hat RHCSA mini series blog. In the chapter we will learn about NTP.
Part 2 – How to manipulate files in RedHat
Part 3 – Red Hat Permissions
Part 6 – How to configure local storage
Time is incredibly important to a server, especially in production. Accurate timing is essential for logging & auditing. Some cloud integration tools will not work if the time is out of sync
NTP (Network Time Protocol)
NTP keeps servers synchronized with the correct time. NTP can use either network based servers, such as a domain controller, or it can point to online global time servers.
Set Time Zone
I live in the UK, So i need to set the time to Europe GMT
sudo timedatectl set-timezone Europe/London timedatectl
To view the time on another server, such as an enterprise domain controller use the –host operator (You will need to provide user credentials)
crony.d is daemon that manages time
systemctl status chronyd
chronyc sources -v
To manuall edited the Chrony configuration, edit the chrony.conf, here you can set a time server on the internal network
sudo vim /etc/chrony.conf
Looking for some more Linux reading, check out this RSA article on Linux.
For more information about the RHCSA certification, check out this page.