Support a list of instance types in AWSManagedMachinePool #3585
Description
/kind feature
Describe the solution you'd like
AWSManagedMachinePool has a field, instanceType, for specifying a single instance type. We should support a list of instance types that the underlying node group should use.
This is primarily useful for spec.capacityType: spot, where specifying a set of instances increases your odds of finding an adequate instance, but there's nothing stopping you from using it with spec.capacityType: onDemand. More here https://docs.aws.amazon.com/eks/latest/userguide/managed-node-groups.html#managed-node-group-capacity-types
See eks: allow specifying multiple instance types for AWSManagedMachinePool for the initial discussion. Thanks @jashandeep-sohi for starting this!
Anything else you would like to add:
The implementation should wait for a launch template support for AWSManagedMachinePool.
Environment:
- Cluster-api-provider-aws version:
- Kubernetes version: (use
kubectl version): - OS (e.g. from
/etc/os-release):