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amazon-ekseksctl

Multiple subnets in same AZ with eksctl

In the eksctl ClusterConfig file, how to map if I have multiple subnets (subnets with different CIDR range) in the same AZ ?

  eu-west-1a:
      id: "subnet-02a3dacfd211d0870"
      cidr: "192.168.32.0/22"
  eu-west-1b:
      id: "subnet-07a7b2710e102cc03"
      cidr: "192.168.36.0/22"
  eu-west-1c:
      id: "subnet-00b560c1f99779a6d"
      cidr: "192.168.40.0/22"
  eu-west-1a:
      id: "subnet-0c5e28e892372ebf4"
      cidr: "192.168.47.0/25"
Solution

  • Based on a discussion on eksctl's slack channel, multiples subnets per AZ is not supported yet. From the discussion:

    isn't supported currently because that field takes a map which does not permit duplicate keys (availability zones here)

    There are some request for this also:

    https://github.com/weaveworks/eksctl/issues/475#issuecomment-498995479 https://github.com/weaveworks/eksctl/issues/806