CheckKubernetesCIDRs validates an existing VPC, pod, and service CIDRs do not overlap.

CheckSubnetsAgainstExistingVPC dynamically checks that the proposed subnets are suitable with the given existing VPC and its subnets.

GetDefaultSubnets partitions a CIDR into subnets.

GetVPCSubnets returns the lists of existing subnets in the given VPC, that are suitable for controllers and workers nodes.

PopulateCIDRs shoves some CIDRs into subnets when we know the IDs.

PopulateETCDInstances initializes a slice of ETCDInstance, with the corresponding initial-cluster and endpoint variables.

ValidateKubernetesCIDRs validates node, pod, and service CIDRs do not overlap.

ValidateSubnets statically validates for correct subnet format, inclusion in the VPC CIDR range, and non-overlapping subnets.

Config: External configuration interface.

SecretAssets are secret assets as raw bytes.