Daemon set to fix bad default setting for SWAP. This will reduce chances of Swap memory being used, while not disabling it completely. You want it when your nodes have sufficiently memory hungry workloads which will lead to Linux allocate more Swap than necessary, causing kswapd0 to be busy and eating your CPU, starving the node

eks-swap-fix.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  name: eks-swap-fixer-oneshot
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: eks-swap-fixer-oneshot
rules:
  - apiGroups: [""]
    resources: ["nodes"]
    verbs: ["get", "patch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: eks-swap-fixer-oneshot
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: eks-swap-fixer-oneshot
subjects:
  - kind: ServiceAccount
    name: eks-swap-fixer-oneshot
    namespace: kube-system
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: eks-swap-fixer-oneshot
  namespace: kube-system
spec:
  selector:
    matchLabels:
      app: eks-swap-fixer-oneshot
  template:
    metadata:
      labels:
        app: eks-swap-fixer-oneshot
    spec:
      serviceAccountName: eks-swap-fixer-oneshot
      hostNetwork: true
      tolerations:
        - operator: Exists
      # Do not schedule on nodes that are already configured with current version
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: eks-swap-configured
                    operator: DoesNotExist
              - matchExpressions:
                  - key: eks-swap-configured
                    operator: NotIn
                    values:
                      - "v1"
      initContainers:
        - name: sysctl-init
          image: public.ecr.aws/docker/library/busybox:stable-musl
          securityContext:
            privileged: true
          command: ["/bin/sh", "-c"]
          args:
            - |
              set -e
              echo "Applying vm.swappiness=60 on $NODE_NAME/$(hostname)..."
              sysctl -w vm.swappiness=60
      containers:
        - name: apply-node-labeler
          image: registry.k8s.io/kubectl:v1.34.9
          args:
            - label
            - node
            - "$(NODE_NAME)"
            - eks-swap-configured=v1
            - --overwrite
          env:
            - name: NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
          resources:
            requests:
              cpu: 10m
              memory: 16Mi