All management components must be configured to use NTP for time synchronization.
NTP Server Configuration
- Configure two time sources that are external to the SDDC. These sources can be physical radio or GPS time servers, or even NTP servers running on physical routers or servers.
- Ensure that the external time servers are synchronized to different time sources to ensure desirable NTP dispersion.
Configure a DNS Canonical Name (CNAME) record that maps the two time sources to one DNS name.
|NTP Server FQDN||Mapped IP Address|
Time Synchronization on the SDDC Nodes
- Synchronize the time with the NTP servers on the following systems:
- ESXi hosts
- AD domain controllers
- Virtual appliances of the management applications
- Configure each system with the ntp.sfo01.rainpole.local NTP server alias
Time Synchronization on the Application Virtual Machines
- Verify that the default configuration on the Windows VMs is active, that is, the Windows VMs are synchronized with the NTP servers.
- As a best practice, for time synchronization on virtual machines, enable NTP-based time synchronization instead of the VMware Tools periodic time synchronization because NTP is an industry standard and ensures accurate timekeeping in the guest operating system.