Network Sizing: General Requirements ​

Generally speaking, the number of IP addresses required in your VPC environment depends on the number of expected instances, times the number of workers, divided by the number of differing availability zones those instances are distributed across.

Keep in mind that once a Yellowbrick Data Warehouse stack has been deployed, its subnet size can never be changed without tearing the deployment down. There is an immutable relationship between EKS and its subnets, and a created subnet and its network CIDR (size). Before every installation, you must know the answer to the following question:

What is the biggest size we expect this deployment ever to be (without requiring a tear-down)?

The preferred sizing of subnets is /19, which allows for the generation of 8,000 IP addresses. /24 is also sufficient, but /25 is too small.

The recommended network size is displayed by default when you deploy a new stack. See also Creating a New Stack.

Parent topic:Preparing for a New Installation