Pin karpenter support to 0.6.*

pkg/apis/eksctl.io/v1alpha5/types.go

@@ -341,6 +341,12 @@ const (
 	minimumVPCCNIVersionForIPv6 = "1.10.0"
 )
 
+// supported version of Karpenter
+const (
+	supportedKarpenterVersion      = "0.6"
+	supportedKarpenterVersionMinor = 6
+)
+
 var (
 	// DefaultIPFamily defines the default IP family to use when creating a new VPC and cluster.
 	DefaultIPFamily = IPV4Family

pkg/apis/eksctl.io/v1alpha5/validation.go

@@ -151,6 +151,17 @@ func validateKarpenterConfig(cfg *ClusterConfig) error {
 	if cfg.Karpenter.Version == "" {
 		return errors.New("version field is required if installing Karpenter is enabled")
 	}
+
+	v, err := version.NewVersion(cfg.Karpenter.Version)
+	if err != nil {
+		return fmt.Errorf("failed to parse karpenter version %q: %w", cfg.Karpenter.Version, err)
+	}
+
+	minor := v.Segments()[1]
+	if minor > supportedKarpenterVersionMinor {
+		return fmt.Errorf("failed to validate karpenter config: maximum supported version is %s", supportedKarpenterVersion)
+	}
+
 	if IsDisabled(cfg.IAM.WithOIDC) {
 		return errors.New("iam.withOIDC must be enabled with Karpenter")
 	}

pkg/apis/eksctl.io/v1alpha5/validation_test.go

@@ -1690,17 +1690,36 @@ var _ = Describe("ClusterConfig validation", func() {
 	})
 
 	Describe("Karpenter", func() {
+		It("returns an error when OIDC is not set", func() {
+			cfg := api.NewClusterConfig()
+			cfg.Karpenter = &api.Karpenter{
+				Version: "0.6.1",
+			}
+			Expect(api.ValidateClusterConfig(cfg)).To(MatchError(ContainSubstring("failed to validate karpenter config: iam.withOIDC must be enabled with Karpenter")))
+		})
+
 		It("returns an error when version is missing", func() {
 			cfg := api.NewClusterConfig()
 			cfg.Karpenter = &api.Karpenter{}
 			Expect(api.ValidateClusterConfig(cfg)).To(MatchError(ContainSubstring("version field is required if installing Karpenter is enabled")))
 		})
-		It("returns an error when OIDC is not set", func() {
+
+		It("returns an error when version is missing", func() {
 			cfg := api.NewClusterConfig()
+			cfg.IAM.WithOIDC = aws.Bool(true)
 			cfg.Karpenter = &api.Karpenter{
-				Version: "0.5.1",
+				Version: "isitmeeeyourlookingfoorrrr",
 			}
-			Expect(api.ValidateClusterConfig(cfg)).To(MatchError(ContainSubstring("failed to validate karpenter config: iam.withOIDC must be enabled with Karpenter")))
+			Expect(api.ValidateClusterConfig(cfg)).To(MatchError(ContainSubstring("failed to parse karpenter version")))
+		})
+
+		It("returns an error when the version is not supported", func() {
+			cfg := api.NewClusterConfig()
+			cfg.IAM.WithOIDC = aws.Bool(true)
+			cfg.Karpenter = &api.Karpenter{
+				Version: "0.7.0",
+			}
+			Expect(api.ValidateClusterConfig(cfg)).To(MatchError(ContainSubstring("failed to validate karpenter config: maximum supported version is 0.6")))
 		})
 	})