Some features require that NTP be configured on all the components in the NSX-T environment.

It is highly recommended that you configure NTP for all components, regardless of the features you plan to use.

Note: Change NTP time configuration in small increments. Do not change the time in a one large jump. If you change the time in a large increment, you must restart the appliance for correct functionality.

To configure NTP on an appliance, see Configuring Appliances.

To configure NTP for all Manager and Edge nodes, see Configure a Node Profile.

To configure NTP for an ESXi host, see the topic Synchronize ESXi Clocks with a Network Time Server, in VSphere Security.

By default, different NTP services run in different Linux distributions. In all releases, run the timedatectl to view the synchronization status. Only one NTP service can be running at a time.

The following Linux distributions are supported with their default NTP services:
Linux Server NTP Client
RHEL/CentOS 7.6 chronyd.service
RHEL/CentOS 7.7 chronyd.service
RHEL/CentOS 8.0 chronyd.service
RHEL/CentOS 8.2 chronyd.service
Ubuntu 18.04 systemd-timesyncd
Ubuntu 20.04 systemd-timesyncd
SLES12 SP4 systemd-timedated