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ls -al /etc/eks/bootstrap.sh
ls -al /var/lib/cloud/scripts/eksctl/bootstrap.helper.sh

sudo mkdir -p /var/lib/cloud/scripts/eksctl/
sudo curl https://github.com/eksctl-io/eksctl/blob/main/pkg/nodebootstrap/assets/scripts/bootstrap.helper.sh -o /var/lib/cloud/scripts/eksctl/bootstrap.helper.sh
sudo chmod +x /var/lib/cloud/scripts/eksctl/bootstrap.helper.sh

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# Check current kernel
uname -r
# Output: 5.10.198-187.748.amzn2.x86_64

# Get available kernels
sudo amazon-linux-extras | grep kernel
# Enable newer kernel from Amazon RPM repo
sudo amazon-linux-extras enable kernel-5.15
# Disable old
sudo amazon-linux-extras disable kernel-5.4
sudo amazon-linux-extras disable kernel-5.10

# See if kernel package locked
sudo yum versionlock list | grep kernel
# Output: 0:kernel-5.10.198-187.748.amzn2.*
# Output: 0:kernel-headers-5.10.198-187.748.amzn2.*
# Output: 0:kernel-devel-5.10.198-187.748.amzn2.*

# Remove package locks
sudo yum versionlock delete 0:kernel-5.10.198-187.748.amzn2.*
sudo yum versionlock delete 0:kernel-headers-5.10.198-187.748.amzn2.*
sudo yum versionlock delete 0:kernel-devel-5.10.198-187.748.amzn2.*

# Upgrade kernel versions (this example: 5.10->5.15)
sudo yum upgrade kernel kernel-devel kernel-headers

# See installed kernels
rpm -qa | grep kernel

sudo reboot

uname -r

sudo package-cleanup --leaves
sudo package-cleanup --oldkernels

sudo yum remove kernel-5.10* kernel-devel-5.10*

sudo yum clean metadata
sudo yum clean all

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...
  - name: custom_image
    amiFamily: AmazonLinux2
    ami: ami-12345 # custom ami with kernel-5.15 build on ami-06b72a2948fb82288
    overrideBootstrapCommand: |
      #!/bin/bash
      echo "eksctl relies on a specific set of labels to be on the node, so it can find them."

      source /var/lib/cloud/scripts/eksctl/bootstrap.helper.sh

      # Note "--node-labels=${NODE_LABELS}" needs the above helper sourced to work, otherwise will have to be defined manually.
      /etc/eks/bootstrap.sh ${CLUSTER_NAME} --container-runtime containerd --kubelet-extra-args "--node-labels=${NODE_LABELS}"

    desiredCapacity: 1
    minSize: 0
    maxSize: 40
    instancesDistribution:
      instanceTypes
        - c5.4xlarge    # 32.0 GiB 16 vCPUs
        - c6a.4xlarge   # 32.0 GiB 16 vCPUs
        - c6i.4xlarge   # 32.0 GiB 16 vCPUs
        - m5a.4xlarge   # 64.0 GiB 16 vCPUs
      onDemandBaseCapacity: 0
      onDemandPercentageAboveBaseCapacity: 0
      spotAllocationStrategy: "price-capacity-optimized"
    tags:
      'k8s.io/cluster-autoscaler/node-template/label/role': 'role'
      'tag_name': 'tag_value'
    labels:
      role: role
    volumeSize: 100
    privateNetworking: true
    securityGroups:
      attachIDs:
        - sg-12345
    iam:
      withAddonPolicies:
        externalDNS: true
        certManager: true
        awsLoadBalancerController: true
        imageBuilder: true
      attachPolicy:
        Statement:
          - Effect: Allow
            Action:
              - "s3:ListBucket"
            Resource:
              - "arn:aws:s3:::prefix-*"
          - Effect: Allow
            Action:
              - "s3:*Object"
            Resource:
              - "arn:aws:s3:::prefix-*/*"
    ssh:
      allow: true
      publicKeyPath: ~/.ssh/key_rsa.pub