Merge pull request #103 from hbelmiro/RHOAIENG-13871-stable

HumairAK · web-flow · commit bdabd173ec97 · 2024-11-05T08:46:38.000-05:00
UPSTREAM: &lt;carry&gt;: Use DSPA custom ca cert on MLMD and Persistence Agent clients
diff --git a/backend/src/agent/persistence/client/pipeline_client.go b/backend/src/agent/persistence/client/pipeline_client.go
@@ -56,7 +56,8 @@ func NewPipelineClient(
 	mlPipelineServiceName string,
 	mlPipelineServiceHttpPort string,
 	mlPipelineServiceGRPCPort string,
-	mlPipelineServiceTLSEnabled bool) (*PipelineClient, error) {
+	mlPipelineServiceTLSEnabled bool,
+	caCertPath string) (*PipelineClient, error) {
 	httpAddress := fmt.Sprintf(addressTemp, mlPipelineServiceName, mlPipelineServiceHttpPort)
 	grpcAddress := fmt.Sprintf(addressTemp, mlPipelineServiceName, mlPipelineServiceGRPCPort)
 	scheme := "http"
@@ -68,7 +69,7 @@ func NewPipelineClient(
 		return nil, errors.Wrapf(err,
 			"Failed to initialize pipeline client. Error: %s", err.Error())
 	}
-	connection, err := util.GetRpcConnection(grpcAddress, mlPipelineServiceTLSEnabled)
+	connection, err := util.GetRpcConnection(grpcAddress, mlPipelineServiceTLSEnabled, caCertPath)
 	if err != nil {
 		return nil, errors.Wrapf(err,
 			"Failed to get RPC connection. Error: %s", err.Error())
diff --git a/backend/src/agent/persistence/main.go b/backend/src/agent/persistence/main.go
@@ -48,6 +48,7 @@ var (
 	clientBurst                    int
 	executionType                  string
 	saTokenRefreshIntervalInSecs   int64
+	caCertPath                     string
 )
 
 const (
@@ -68,6 +69,7 @@ const (
 	clientBurstFlagName                   = "clientBurst"
 	executionTypeFlagName                 = "executionType"
 	saTokenRefreshIntervalFlagName        = "saTokenRefreshIntervalInSecs"
+	caCertPathFlagName                    = "caCertPath"
 )
 
 const (
@@ -135,7 +137,8 @@ func main() {
 		mlPipelineAPIServerName,
 		mlPipelineServiceHttpPort,
 		mlPipelineServiceGRPCPort,
-		mlPipelineServiceTLSEnabled)
+		mlPipelineServiceTLSEnabled,
+		caCertPath)
 	if err != nil {
 		log.Fatalf("Error creating ML pipeline API Server client: %v", err)
 	}
@@ -177,5 +180,5 @@ func init() {
 	// TODO use viper/config file instead. Sync `saTokenRefreshIntervalFlagName` with the value from manifest file by using ENV var.
 	flag.Int64Var(&saTokenRefreshIntervalInSecs, saTokenRefreshIntervalFlagName, DefaultSATokenRefresherIntervalInSecs, "Persistence agent service account token read interval in seconds. "+
 		"Defines how often `/var/run/secrets/kubeflow/tokens/kubeflow-persistent_agent-api-token` to be read")
-
+	flag.StringVar(&caCertPath, caCertPathFlagName, "", "The path to the CA certificate.")
 }
diff --git a/backend/src/apiserver/client_manager/client_manager.go b/backend/src/apiserver/client_manager/client_manager.go
@@ -208,7 +208,7 @@ func (c *ClientManager) init() {
 
 	c.k8sCoreClient = client.CreateKubernetesCoreOrFatal(common.GetDurationConfig(initConnectionTimeout), clientParams)
 
-	newClient, err := metadata.NewClient(common.GetMetadataGrpcServiceServiceHost(), common.GetMetadataGrpcServiceServicePort(), common.GetMetadataTLSEnabled())
+	newClient, err := metadata.NewClient(common.GetMetadataGrpcServiceServiceHost(), common.GetMetadataGrpcServiceServicePort(), common.GetMetadataTLSEnabled(), common.GetCaCertPath())
 
 	if err != nil {
 		glog.Fatalf("Failed to create metadata client. Error: %v", err)
diff --git a/backend/src/apiserver/common/config.go b/backend/src/apiserver/common/config.go
@@ -36,6 +36,9 @@ const (
 	MetadataGrpcServiceServicePort          string = "METADATA_GRPC_SERVICE_SERVICE_PORT"
 	MetadataTLSEnabled                      string = "METADATA_TLS_ENABLED"
 	SignedURLExpiryTimeSeconds              string = "SIGNED_URL_EXPIRY_TIME_SECONDS"
+	CaBundleMountPath                       string = "ARTIFACT_COPY_STEP_CABUNDLE_MOUNTPATH"
+	CaBundleConfigMapKey                    string = "ARTIFACT_COPY_STEP_CABUNDLE_CONFIGMAP_KEY"
+	CaBundleConfigMapName                   string = "ARTIFACT_COPY_STEP_CABUNDLE_CONFIGMAP_NAME"
 )
 
 func IsPipelineVersionUpdatedByDefault() bool {
@@ -147,3 +150,13 @@ func GetSignedURLExpiryTimeSeconds() int {
 func GetMetadataTLSEnabled() bool {
 	return GetBoolConfigWithDefault(MetadataTLSEnabled, DefaultMetadataTLSEnabled)
 }
+
+func GetCaCertPath() string {
+	caBundleMountPath := GetStringConfigWithDefault(CaBundleMountPath, "")
+	if caBundleMountPath != "" {
+		caBundleConfigMapKey := GetStringConfigWithDefault(CaBundleConfigMapKey, "")
+		return caBundleMountPath + "/" + caBundleConfigMapKey
+	} else {
+		return ""
+	}
+}
diff --git a/backend/src/common/util/service.go b/backend/src/common/util/service.go
@@ -16,10 +16,12 @@ package util
 
 import (
 	"crypto/tls"
+	"crypto/x509"
 	"fmt"
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/credentials/insecure"
 	"net/http"
+	"os"
 	"strings"
 	"time"
 
@@ -77,10 +79,23 @@ func GetKubernetesClientFromClientConfig(clientConfig clientcmd.ClientConfig) (
 	return clientSet, config, namespace, nil
 }
 
-func GetRpcConnection(address string, tlsEnabled bool) (*grpc.ClientConn, error) {
+func GetRpcConnection(address string, tlsEnabled bool, caCertPath string) (*grpc.ClientConn, error) {
 	creds := insecure.NewCredentials()
 	if tlsEnabled {
-		config := &tls.Config{}
+		if caCertPath == "" {
+			return nil, errors.New("CA cert path is empty")
+		}
+
+		caCert, err := os.ReadFile(caCertPath)
+		if err != nil {
+			return nil, errors.Wrap(err, "Encountered error when reading CA cert path for creating a metadata client.")
+		}
+		caCertPool := x509.NewCertPool()
+		caCertPool.AppendCertsFromPEM(caCert)
+
+		config := &tls.Config{
+			RootCAs: caCertPool,
+		}
 		creds = credentials.NewTLS(config)
 	}
 
diff --git a/backend/src/v2/cmd/driver/main.go b/backend/src/v2/cmd/driver/main.go
@@ -71,6 +71,7 @@ var (
 
 	mlPipelineServiceTLSEnabledStr = flag.String("mlPipelineServiceTLSEnabled", "false", "Set to 'true' if mlpipeline api server serves over TLS (default: 'false').")
 	metadataTLSEnabledStr          = flag.String("metadataTLSEnabled", "false", "Set to 'true' if metadata server serves over TLS (default: 'false').")
+	caCertPath                     = flag.String("ca_cert_path", "", "The path to the CA certificate.")
 )
 
 // func RootDAG(pipelineName string, runID string, component *pipelinespec.ComponentSpec, task *pipelinespec.PipelineTaskSpec, mlmd *metadata.Client) (*Execution, error) {
@@ -176,6 +177,7 @@ func drive() (err error) {
 		MLMDServerAddress:    *mlmdServerAddress,
 		MLMDServerPort:       *mlmdServerPort,
 		MLMDTLSEnabled:       metadataTLSEnabled,
+		CaCertPath:           *caCertPath,
 	}
 	var execution *driver.Execution
 	var driverErr error
@@ -307,5 +309,5 @@ func newMlmdClient() (*metadata.Client, error) {
 		return nil, err
 	}
 
-	return metadata.NewClient(mlmdConfig.Address, mlmdConfig.Port, tlsEnabled)
+	return metadata.NewClient(mlmdConfig.Address, mlmdConfig.Port, tlsEnabled, *caCertPath)
 }
diff --git a/backend/src/v2/cmd/launcher-v2/main.go b/backend/src/v2/cmd/launcher-v2/main.go
@@ -44,6 +44,7 @@ var (
 	mlmdServerPort                 = flag.String("mlmd_server_port", "8080", "The MLMD gRPC server port.")
 	mlPipelineServiceTLSEnabledStr = flag.String("mlPipelineServiceTLSEnabled", "false", "Set to 'true' if mlpipeline api server serves over TLS (default: 'false').")
 	metadataTLSEnabledStr          = flag.String("metadataTLSEnabled", "false", "Set to 'true' if metadata server serves over TLS (default: 'false').")
+	caCertPath                     = flag.String("ca_cert_path", "", "The path to the CA certificate.")
 )
 
 func main() {
@@ -88,6 +89,7 @@ func run() error {
 		RunID:                *runID,
 		MLPipelineTLSEnabled: mlPipelineServiceTLSEnabled,
 		MetadataTLSEnabled:   metadataServiceTLSEnabled,
+		CaCertPath:           *caCertPath,
 	}
 
 	switch *executorType {
diff --git a/backend/src/v2/compiler/argocompiler/common.go b/backend/src/v2/compiler/argocompiler/common.go
@@ -17,6 +17,7 @@ package argocompiler
 import (
 	"fmt"
 	wfapi "github.com/argoproj/argo-workflows/v3/pkg/apis/workflow/v1alpha1"
+	"github.com/kubeflow/pipelines/backend/src/apiserver/common"
 	k8score "k8s.io/api/core/v1"
 	"os"
 	"strconv"
@@ -98,9 +99,9 @@ func GetMLPipelineServicePortGRPC() string {
 // ConfigureCABundle adds CABundle environment variables and volume mounts
 // if CA Bundle env vars are specified.
 func ConfigureCABundle(tmpl *wfapi.Template) {
-	caBundleCfgMapName := os.Getenv("ARTIFACT_COPY_STEP_CABUNDLE_CONFIGMAP_NAME")
-	caBundleCfgMapKey := os.Getenv("ARTIFACT_COPY_STEP_CABUNDLE_CONFIGMAP_KEY")
-	caBundleMountPath := os.Getenv("ARTIFACT_COPY_STEP_CABUNDLE_MOUNTPATH")
+	caBundleCfgMapName := os.Getenv(common.CaBundleConfigMapName)
+	caBundleCfgMapKey := os.Getenv(common.CaBundleConfigMapKey)
+	caBundleMountPath := os.Getenv(common.CaBundleMountPath)
 	if caBundleCfgMapName != "" && caBundleCfgMapKey != "" {
 		caFile := fmt.Sprintf("%s/%s", caBundleMountPath, caBundleCfgMapKey)
 		var certDirectories = []string{
diff --git a/backend/src/v2/compiler/argocompiler/container.go b/backend/src/v2/compiler/argocompiler/container.go
@@ -171,6 +171,7 @@ func (c *workflowCompiler) addContainerDriverTemplate() string {
 				"--mlmd_server_address", common.GetMetadataGrpcServiceServiceHost(),
 				"--mlmd_server_port", common.GetMetadataGrpcServiceServicePort(),
 				"--metadataTLSEnabled", strconv.FormatBool(common.GetMetadataTLSEnabled()),
+				"--ca_cert_path", common.GetCaCertPath(),
 			},
 			Resources: driverResources,
 		},
diff --git a/backend/src/v2/compiler/argocompiler/dag.go b/backend/src/v2/compiler/argocompiler/dag.go
@@ -447,6 +447,7 @@ func (c *workflowCompiler) addDAGDriverTemplate() string {
 				"--mlmd_server_address", common.GetMetadataGrpcServiceServiceHost(),
 				"--mlmd_server_port", common.GetMetadataGrpcServiceServicePort(),
 				"--metadataTLSEnabled", strconv.FormatBool(common.GetMetadataTLSEnabled()),
+				"--ca_cert_path", common.GetCaCertPath(),
 			},
 			Resources: driverResources,
 		},
diff --git a/backend/src/v2/compiler/argocompiler/importer.go b/backend/src/v2/compiler/argocompiler/importer.go
@@ -81,6 +81,7 @@ func (c *workflowCompiler) addImporterTemplate() string {
 		"--mlmd_server_address", common.GetMetadataGrpcServiceServiceHost(),
 		"--mlmd_server_port", common.GetMetadataGrpcServiceServicePort(),
 		"--metadataTLSEnabled", strconv.FormatBool(common.GetMetadataTLSEnabled()),
+		"--ca_cert_path", common.GetCaCertPath(),
 	}
 	importerTemplate := &wfapi.Template{
 		Name: name,
@@ -101,6 +102,9 @@ func (c *workflowCompiler) addImporterTemplate() string {
 			Resources: driverResources,
 		},
 	}
+
+	ConfigureCABundle(importerTemplate)
+
 	c.templates[name] = importerTemplate
 	c.wf.Spec.Templates = append(c.wf.Spec.Templates, *importerTemplate)
 	return name
diff --git a/backend/src/v2/compiler/argocompiler/testdata/create_mount_delete_dynamic_pvc.yaml b/backend/src/v2/compiler/argocompiler/testdata/create_mount_delete_dynamic_pvc.yaml
@@ -73,6 +73,8 @@ spec:
       - "8080"
       - "--metadataTLSEnabled"
       - "false"
+      - "--ca_cert_path"
+      - ""
       command:
       - driver
       image: gcr.io/ml-pipeline/kfp-driver
@@ -324,6 +326,8 @@ spec:
       - "8080"
       - "--metadataTLSEnabled"
       - "false"
+      - "--ca_cert_path"
+      - ""
       command:
       - driver
       image: gcr.io/ml-pipeline/kfp-driver
diff --git a/backend/src/v2/compiler/argocompiler/testdata/create_pod_metadata.yaml b/backend/src/v2/compiler/argocompiler/testdata/create_pod_metadata.yaml
@@ -57,6 +57,8 @@ spec:
       - "8080"
       - "--metadataTLSEnabled"
       - "false"
+      - "--ca_cert_path"
+      - ""
       command:
       - driver
       image: gcr.io/ml-pipeline/kfp-driver
@@ -263,6 +265,8 @@ spec:
       - "8080"
       - "--metadataTLSEnabled"
       - "false"
+      - "--ca_cert_path"
+      - ""
       command:
       - driver
       image: gcr.io/ml-pipeline/kfp-driver
diff --git a/backend/src/v2/compiler/argocompiler/testdata/hello_world.yaml b/backend/src/v2/compiler/argocompiler/testdata/hello_world.yaml
@@ -56,6 +56,8 @@ spec:
       - "8080"
       - "--metadataTLSEnabled"
       - "false"
+      - "--ca_cert_path"
+      - ""
       command:
       - driver
       image: gcr.io/ml-pipeline/kfp-driver
@@ -254,6 +256,8 @@ spec:
       - "8080"
       - "--metadataTLSEnabled"
       - "false"
+      - "--ca_cert_path"
+      - ""
       env:
         - name: ML_PIPELINE_SERVICE_HOST
           value: ml-pipeline.kubeflow.svc.cluster.local
diff --git a/backend/src/v2/compiler/argocompiler/testdata/importer.yaml b/backend/src/v2/compiler/argocompiler/testdata/importer.yaml
@@ -43,6 +43,8 @@ spec:
       - "8080"
       - --metadataTLSEnabled
       - "false"
+      - "--ca_cert_path"
+      - ""
       command:
       - launcher-v2
       env:
@@ -128,6 +130,8 @@ spec:
       - "8080"
       - "--metadataTLSEnabled"
       - "false"
+      - "--ca_cert_path"
+      - ""
       command:
       - driver
       image: gcr.io/ml-pipeline/kfp-driver
diff --git a/backend/src/v2/component/importer_launcher.go b/backend/src/v2/component/importer_launcher.go
@@ -88,7 +88,7 @@ func NewImporterLauncher(ctx context.Context, componentSpecJSON, importerSpecJSO
 	if err != nil {
 		return nil, fmt.Errorf("failed to initialize kubernetes client set: %w", err)
 	}
-	metadataClient, err := metadata.NewClient(launcherV2Opts.MLMDServerAddress, launcherV2Opts.MLMDServerPort, launcherV2Opts.MetadataTLSEnabled)
+	metadataClient, err := metadata.NewClient(launcherV2Opts.MLMDServerAddress, launcherV2Opts.MLMDServerPort, launcherV2Opts.MetadataTLSEnabled, launcherV2Opts.CaCertPath)
 	if err != nil {
 		return nil, err
 	}
diff --git a/backend/src/v2/component/launcher_v2.go b/backend/src/v2/component/launcher_v2.go
@@ -56,6 +56,7 @@ type LauncherV2Options struct {
 	MLPipelineTLSEnabled bool
 	// set to true if metadata server is serving over tls
 	MetadataTLSEnabled bool
+	CaCertPath         string
 }
 
 type LauncherV2 struct {
@@ -112,7 +113,7 @@ func NewLauncherV2(ctx context.Context, executionID int64, executorInputJSON, co
 	if err != nil {
 		return nil, fmt.Errorf("failed to initialize kubernetes client set: %w", err)
 	}
-	metadataClient, err := metadata.NewClient(opts.MLMDServerAddress, opts.MLMDServerPort, opts.MetadataTLSEnabled)
+	metadataClient, err := metadata.NewClient(opts.MLMDServerAddress, opts.MLMDServerPort, opts.MetadataTLSEnabled, opts.CaCertPath)
 	if err != nil {
 		return nil, err
 	}
diff --git a/backend/src/v2/driver/driver.go b/backend/src/v2/driver/driver.go
@@ -82,6 +82,8 @@ type Options struct {
 
 	// set to true if MLMD server is serving over tls
 	MLMDTLSEnabled bool
+
+	CaCertPath string
 }
 
 // Identifying information used for error messages
@@ -344,7 +346,7 @@ func Container(ctx context.Context, opts Options, mlmd *metadata.Client, cacheCl
 		return execution, nil
 	}
 
-	podSpec, err := initPodSpecPatch(opts.Container, opts.Component, executorInput, execution.ID, opts.PipelineName, opts.RunID, opts.MLPipelineTLSEnabled, opts.MLMDServerAddress, opts.MLMDServerPort, opts.MLMDTLSEnabled)
+	podSpec, err := initPodSpecPatch(opts.Container, opts.Component, executorInput, execution.ID, opts.PipelineName, opts.RunID, opts.MLPipelineTLSEnabled, opts.MLMDServerAddress, opts.MLMDServerPort, opts.MLMDTLSEnabled, opts.CaCertPath)
 	if err != nil {
 		return execution, err
 	}
@@ -381,6 +383,7 @@ func initPodSpecPatch(
 	mlmdServerAddress string,
 	mlmdServerPort string,
 	mlmdTLSEnabled bool,
+	caCertPath string,
 ) (*k8score.PodSpec, error) {
 	executorInputJSON, err := protojson.Marshal(executorInput)
 	if err != nil {
@@ -420,6 +423,7 @@ func initPodSpecPatch(
 		"--metadataTLSEnabled", fmt.Sprintf("%v", mlmdTLSEnabled),
 		"--mlPipelineServiceTLSEnabled",
 		fmt.Sprintf("%v", mlPipelineTLSEnabled),
+		"--ca_cert_path", caCertPath,
 		"--", // separater before user command and args
 	}
 	res := k8score.ResourceRequirements{
diff --git a/backend/src/v2/driver/driver_test.go b/backend/src/v2/driver/driver_test.go
@@ -244,7 +244,7 @@ func Test_initPodSpecPatch_acceleratorConfig(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			podSpec, err := initPodSpecPatch(tt.args.container, tt.args.componentSpec, tt.args.executorInput, tt.args.executionID, tt.args.pipelineName, tt.args.runID, false, "unused-mlmd-server-address", "unused-mlmd-server-port", false)
+			podSpec, err := initPodSpecPatch(tt.args.container, tt.args.componentSpec, tt.args.executorInput, tt.args.executionID, tt.args.pipelineName, tt.args.runID, false, "unused-mlmd-server-address", "unused-mlmd-server-port", false, "unused-ca-cert-path")
 			if tt.wantErr {
 				assert.Nil(t, podSpec)
 				assert.NotNil(t, err)
@@ -406,7 +406,7 @@ func Test_initPodSpecPatch_resourceRequests(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			podSpec, err := initPodSpecPatch(tt.args.container, tt.args.componentSpec, tt.args.executorInput, tt.args.executionID, tt.args.pipelineName, tt.args.runID, false, "unused-mlmd-server-address", "unused-mlmd-server-port", false)
+			podSpec, err := initPodSpecPatch(tt.args.container, tt.args.componentSpec, tt.args.executorInput, tt.args.executionID, tt.args.pipelineName, tt.args.runID, false, "unused-mlmd-server-address", "unused-mlmd-server-port", false, "unused-ca-cert-path")
 			assert.Nil(t, err)
 			assert.NotEmpty(t, podSpec)
 			podSpecString, err := json.Marshal(podSpec)
@@ -533,7 +533,7 @@ func Test_extendPodSpecPatch_Secret(t *testing.T) {
 					{
 						Name: "secret1",
 						VolumeSource: k8score.VolumeSource{
-							Secret: &k8score.SecretVolumeSource{SecretName: "secret1", Optional:  &[]bool{false}[0],},
+							Secret: &k8score.SecretVolumeSource{SecretName: "secret1", Optional: &[]bool{false}[0]},
 						},
 					},
 				},
diff --git a/backend/src/v2/metadata/client.go b/backend/src/v2/metadata/client.go
diff --git a/backend/src/v2/metadata/client_test.go b/backend/src/v2/metadata/client_test.go

Original file line number	Diff line number	Diff line change
`@@ -71,6 +71,7 @@ var (`
`71`	`71`
`72`	`72`	`mlPipelineServiceTLSEnabledStr = flag.String("mlPipelineServiceTLSEnabled", "false", "Set to 'true' if mlpipeline api server serves over TLS (default: 'false').")`
`73`	`73`	`metadataTLSEnabledStr = flag.String("metadataTLSEnabled", "false", "Set to 'true' if metadata server serves over TLS (default: 'false').")`
	`74`	`+ caCertPath = flag.String("ca_cert_path", "", "The path to the CA certificate.")`
`74`	`75`	`)`
`75`	`76`
`76`	`77`	`// func RootDAG(pipelineName string, runID string, component pipelinespec.ComponentSpec, task pipelinespec.PipelineTaskSpec, mlmd metadata.Client) (Execution, error) {`
`@@ -176,6 +177,7 @@ func drive() (err error) {`
`176`	`177`	`MLMDServerAddress: *mlmdServerAddress,`
`177`	`178`	`MLMDServerPort: *mlmdServerPort,`
`178`	`179`	`MLMDTLSEnabled: metadataTLSEnabled,`
	`180`	`+ CaCertPath: *caCertPath,`
`179`	`181`	`}`
`180`	`182`	`var execution *driver.Execution`
`181`	`183`	`var driverErr error`
`@@ -307,5 +309,5 @@ func newMlmdClient() (*metadata.Client, error) {`
`307`	`309`	`return nil, err`
`308`	`310`	`}`
`309`	`311`
`310`		`- return metadata.NewClient(mlmdConfig.Address, mlmdConfig.Port, tlsEnabled)`
	`312`	`+ return metadata.NewClient(mlmdConfig.Address, mlmdConfig.Port, tlsEnabled, *caCertPath)`
`311`	`313`	`}`
Original file line number	Diff line number	Diff line change
`@@ -44,6 +44,7 @@ var (`
`44`	`44`	`mlmdServerPort = flag.String("mlmd_server_port", "8080", "The MLMD gRPC server port.")`
`45`	`45`	`mlPipelineServiceTLSEnabledStr = flag.String("mlPipelineServiceTLSEnabled", "false", "Set to 'true' if mlpipeline api server serves over TLS (default: 'false').")`
`46`	`46`	`metadataTLSEnabledStr = flag.String("metadataTLSEnabled", "false", "Set to 'true' if metadata server serves over TLS (default: 'false').")`
	`47`	`+ caCertPath = flag.String("ca_cert_path", "", "The path to the CA certificate.")`
`47`	`48`	`)`
`48`	`49`
`49`	`50`	`func main() {`
`@@ -88,6 +89,7 @@ func run() error {`
`88`	`89`	`RunID: *runID,`
`89`	`90`	`MLPipelineTLSEnabled: mlPipelineServiceTLSEnabled,`
`90`	`91`	`MetadataTLSEnabled: metadataServiceTLSEnabled,`
	`92`	`+ CaCertPath: *caCertPath,`
`91`	`93`	`}`
`92`	`94`
`93`	`95`	`switch *executorType {`