chore: bump to EKS 1.28 (#4707)

.github/actions/e2e/create-cluster/action.yaml

@@ -16,7 +16,7 @@ inputs:
   k8s_version:
     description: 'Version of Kubernetes to use for the launched cluster'
     required: false
-    default: "1.27"
+    default: "1.28"
   eksctl_version:
     description: "Version of eksctl to install"
     default: v0.159.0
@@ -50,10 +50,10 @@ runs:
       if [ ! -f $CLOUDFORMATION_PATH ]; then
         CLOUDFORMATION_PATH=website/content/en/preview/getting-started/getting-started-with-eksctl/cloudformation.yaml
       fi
-      
+
       # Update the Cloudformation policy to add the permissionBoundary to the NodeRole
       yq -i '.Resources.KarpenterNodeRole.Properties.PermissionsBoundary="arn:aws:iam::${{ inputs.account_id }}:policy/GithubActionsPermissionsBoundary"' $CLOUDFORMATION_PATH
-      
+
       aws iam create-service-linked-role --aws-service-name spot.amazonaws.com || true
       aws cloudformation deploy \
         --stack-name iam-${{ inputs.cluster_name }} \
@@ -67,7 +67,7 @@ runs:
       # Create or Upgrade the cluster based on whether the cluster already exists
       cmd="create"
       eksctl get cluster --name ${{ inputs.cluster_name }} && cmd="upgrade"
-      
+
       eksctl ${cmd} cluster -f - <<EOF
       ---
       apiVersion: eksctl.io/v1alpha5
@@ -153,4 +153,4 @@ runs:
       for stack_name in $stack_names; do
         echo "Stack Events for $stack_name:"
         aws cloudformation describe-stack-events --stack-name $stack_name
-      done
+      done

.github/actions/install-deps/action.yaml

@@ -3,7 +3,7 @@ description: 'Installs Go Downloads and installs Karpenter Dependencies'
 inputs:
   k8sVersion:
     description: Kubernetes version to use when installing the toolchain
-    default: "1.27.x"
+    default: "1.28.x"
 runs:
   using: "composite"
   steps:
@@ -24,4 +24,4 @@ runs:
         key: ${{ runner.os }}-${{ inputs.k8sVersion }}-toolchain-cache-${{ hashFiles('hack/toolchain.sh') }}
     - if: ${{ steps.cache-toolchain.outputs.cache-hit != 'true' }}
       shell: bash
-      run: K8S_VERSION=${{ inputs.k8sVersion }} make toolchain
+      run: K8S_VERSION=${{ inputs.k8sVersion }} make toolchain

.github/workflows/ci-test.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
         matrix:
-          k8sVersion: ["1.22.x", "1.23.x", "1.24.x", "1.25.x", "1.26.x", "1.27.x"]
+          k8sVersion: ["1.22.x", "1.23.x", "1.24.x", "1.25.x", "1.26.x", "1.27.x", "1.28.x"]
     steps:
     - uses: actions/checkout@v4
     - uses: ./.github/actions/install-deps

.github/workflows/e2e-conformance-trigger.yaml

@@ -20,12 +20,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        k8s_version: [ "1.23", "1.24", "1.25", "1.26", "1.27" ]
+        k8s_version: [ "1.23", "1.24", "1.25", "1.26", "1.27", "1.28" ]
     uses: ./.github/workflows/e2e-matrix.yaml
     with:
       event_name: ${{ github.event_name }}
       region: "eu-west-1"
       k8s_version: ${{ matrix.k8s_version }}
       workflow_trigger: "conformance"
     secrets:
-      SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+      SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}

.github/workflows/e2e-matrix.yaml

@@ -7,7 +7,7 @@ on:
         default: "us-east-2"
       k8s_version:
         type: string
-        default: "1.27"
+        default: "1.28"
       eksctl_version:
         type: string
         default: v0.159.0
@@ -38,7 +38,7 @@ on:
           - "1.26"
           - "1.27"
           - "1.28"
-        default: "1.27"
+        default: "1.28"
       eksctl_version:
         type: string
         default: v0.159.0

.github/workflows/e2e-upgrade.yaml

@@ -22,7 +22,7 @@ on:
           - "1.26"
           - "1.27"
           - "1.28"
-        default: "1.27"
+        default: "1.28"
       eksctl_version:
         type: string
         default: v0.159.0
@@ -34,14 +34,14 @@ on:
       to_git_ref:
         type: string
       region:
-        type: string 
+        type: string
         default: "us-east-2"
       event_name:
         type: string
         required: true
       k8s_version:
         type: string
-        default: "1.27"
+        default: "1.28"
       eksctl_version:
         type: string
         default: v0.159.0

.github/workflows/e2e.yaml

@@ -34,7 +34,7 @@ on:
           - "1.26"
           - "1.27"
           - "1.28"
-        default: "1.27"
+        default: "1.28"
       eksctl_version:
         type: string
         default: v0.159.0
@@ -56,7 +56,7 @@ on:
         required: true
       k8s_version:
         type: string
-        default: "1.27"
+        default: "1.28"
       eksctl_version:
         type: string
         default: v0.159.0
@@ -94,7 +94,7 @@ jobs:
           role-duration-seconds: 21600
       - name: add jitter on cluster creation
         run: |
-          # Creating jitter so that we can stagger cluster creation to avoid throttling 
+          # Creating jitter so that we can stagger cluster creation to avoid throttling
           sleep $(( $RANDOM % 300 + 1 ))
       - name: generate cluster name
         run: |
@@ -164,4 +164,4 @@ jobs:
         uses: ./.github/actions/commit-status/end
         with:
           name: ${{ github.workflow }} (${{ inputs.k8s_version }}) / e2e (${{ inputs.suite }})
-          git_ref: ${{ inputs.git_ref }}
+          git_ref: ${{ inputs.git_ref }}

pkg/providers/version/version.go

@@ -33,7 +33,7 @@ const (
 	// If a user runs a karpenter image on a k8s version outside the min and max,
 	// One error message will be fired to notify
 	MinK8sVersion = "1.23"
-	MaxK8sVersion = "1.27"
+	MaxK8sVersion = "1.28"
 )
 
 // Provider get the APIServer version. This will be initialized at start up and allows karpenter to have an understanding of the cluster version