Amazon Batch default AMI

When you create an Amazon EKS compute environment, you don't need to specify an Amazon Machine Image (AMI). Amazon Batch selects an Amazon EKS optimized AMI based on the Kubernetes version and instance types that are specified in your CreateComputeEnvironment request. In general, we recommend that you use the default AMI selection. For more information about Amazon EKS optimized AMIs, seeAmazon EKS optimized Amazon Linux AMIs in the Amazon EKS User Guide.

Run the following command to see which AMI type Amazon Batch is selected for your Amazon EKS compute environment. This following example is a non-GPU instance type.

# compute CE example: indicates Batch has chosen the AL2 x86 or ARM EKS 1.29 AMI, depending on instance types
    $ aws batch describe-compute-environments --compute-environments My-Eks-CE1 \
        | jq '.computeEnvironments[].computeResources.ec2Configuration'
    [
      {
        "imageType": "EKS_AL2",
        "imageKubernetesVersion": "1.29"
      }
    ]

This following example is a GPU instance type.

# GPU CE example: indicates Batch has choosen the AL2 x86 EKS Accelerated 1.29 AMI
    $ aws batch describe-compute-environments --compute-environments My-Eks-GPU-CE \
        | jq '.computeEnvironments[].computeResources.ec2Configuration'
    [
      {
        "imageType": "EKS_AL2_NVIDIA",
        "imageKubernetesVersion": "1.29"
      }
    ]