Bump etcd version based on k8s version to 1.10.X => 3.1.12, 1.11.X => 3.2.18, 1.12.X => 3.2.18

cmd/kubeadm/app/constants/constants.go

@@ -292,9 +292,9 @@ var (
 
 	// SupportedEtcdVersion lists officially supported etcd versions with corresponding kubernetes releases
 	SupportedEtcdVersion = map[uint8]string{
-		9:  "3.1.12",
 		10: "3.1.12",
 		11: "3.2.18",
+		12: "3.2.18",
 	}
 )
 

cmd/kubeadm/app/constants/constants_test.go

@@ -127,23 +127,23 @@ func TestEtcdSupportedVersion(t *testing.T) {
 			expectedError:     fmt.Errorf("Unsupported or unknown kubernetes version(1.99.0)"),
 		},
 		{
-			kubernetesVersion: "1.9.0",
+			kubernetesVersion: "1.10.0",
 			expectedVersion:   version.MustParseSemantic("3.1.12"),
 			expectedError:     nil,
 		},
 		{
-			kubernetesVersion: "1.9.2",
+			kubernetesVersion: "1.10.2",
 			expectedVersion:   version.MustParseSemantic("3.1.12"),
 			expectedError:     nil,
 		},
 		{
-			kubernetesVersion: "1.10.0",
-			expectedVersion:   version.MustParseSemantic("3.1.12"),
+			kubernetesVersion: "1.11.0",
+			expectedVersion:   version.MustParseSemantic("3.2.18"),
 			expectedError:     nil,
 		},
 		{
-			kubernetesVersion: "1.10.1",
-			expectedVersion:   version.MustParseSemantic("3.1.12"),
+			kubernetesVersion: "1.12.1",
+			expectedVersion:   version.MustParseSemantic("3.2.18"),
 			expectedError:     nil,
 		},
 	}