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Aviatrix Controllers and Gateways rely on predefined Network Time Protocol (NTP) sources to ensure accurate system time. Manual configuration of custom NTP sources is not supported.

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NTP Behavior

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Controller Deployed in AWS

Aviatrix Controller deployed in AWS environments use the Amazon Time Sync Service at 169.254.169.123. See Amazon Time Sync Service for more information. This service is automatically configured, requires no internet access, and is available via a link-local IP address on all Amazon EC2 instances.

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Controller Deployed in Other Cloud Providers

Aviatrix Controller deployed outside of AWS (such as in Azure or Google Cloud) use the following public NTP servers by default:
  • pool.ntp.org — Public cluster of internet-based NTP servers
  • 1.ubuntu.pool.ntp.org
  • 2.ubuntu.pool.ntp.org
  • 3.ubuntu.pool.ntp.org
  • ntp.ubuntu.com
These servers are automatically used by the Controller for time synchronization. Manual configuration is not supported.

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Gateway Synchronization

All Aviatrix Gateways synchronize their system time with the associated Controller. Gateways do not query external NTP sources directly.