diff --git a/.github/workflows/darwin.yaml b/.github/workflows/darwin.yaml
index 9be5a98e..84fc5423 100644
--- a/.github/workflows/darwin.yaml
+++ b/.github/workflows/darwin.yaml
@@ -10,7 +10,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v2
       with:
-        go-version: ^1.13
+        go-version: ^1.15
       id: go
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
diff --git a/.github/workflows/linux.yaml b/.github/workflows/linux.yaml
index f90f73ab..43567a68 100644
--- a/.github/workflows/linux.yaml
+++ b/.github/workflows/linux.yaml
@@ -13,7 +13,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v2
       with:
-        go-version: ^1.13
+        go-version: ^1.15
       id: go
 
     - name: Check out code into the Go module directory
diff --git a/hack/verify-examples.sh b/hack/verify-examples.sh
index 1c248d43..bd071110 100755
--- a/hack/verify-examples.sh
+++ b/hack/verify-examples.sh
@@ -24,6 +24,9 @@ kubectl apply -f ./deploy/example/statefulset.yaml
 echo "sleep 60s ..."
 sleep 60
 
+echo "begin to check pod status ..."
+kubectl get pods -o wide
+
 kubectl get pods --field-selector status.phase=Running | grep deployment-nfs
 kubectl get pods --field-selector status.phase=Running | grep statefulset-nfs-0
 
diff --git a/pkg/nfs/indentityserver.go b/pkg/nfs/indentityserver.go
index f7f1db3c..52d6943a 100644
--- a/pkg/nfs/indentityserver.go
+++ b/pkg/nfs/indentityserver.go
@@ -22,8 +22,6 @@ import (
 	"golang.org/x/net/context"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
-
-	"k8s.io/klog/v2"
 )
 
 type IdentityServer struct {
@@ -31,8 +29,6 @@ type IdentityServer struct {
 }
 
 func (ids *IdentityServer) GetPluginInfo(ctx context.Context, req *csi.GetPluginInfoRequest) (*csi.GetPluginInfoResponse, error) {
-	klog.V(5).Infof("Using default GetPluginInfo")
-
 	if ids.Driver.name == "" {
 		return nil, status.Error(codes.Unavailable, "Driver name not configured")
 	}
@@ -56,7 +52,6 @@ func (ids *IdentityServer) Probe(ctx context.Context, req *csi.ProbeRequest) (*c
 }
 
 func (ids *IdentityServer) GetPluginCapabilities(ctx context.Context, req *csi.GetPluginCapabilitiesRequest) (*csi.GetPluginCapabilitiesResponse, error) {
-	klog.V(5).Infof("Using default capabilities")
 	return &csi.GetPluginCapabilitiesResponse{
 		Capabilities: []*csi.PluginCapability{
 			{
diff --git a/pkg/nfs/utils.go b/pkg/nfs/utils.go
index d89204ab..97eb83b3 100644
--- a/pkg/nfs/utils.go
+++ b/pkg/nfs/utils.go
@@ -70,14 +70,25 @@ func ParseEndpoint(ep string) (string, string, error) {
 	return "", "", fmt.Errorf("Invalid endpoint: %v", ep)
 }
 
+func getLogLevel(method string) int32 {
+	if method == "/csi.v1.Identity/Probe" ||
+		method == "/csi.v1.Node/NodeGetCapabilities" ||
+		method == "/csi.v1.Node/NodeGetVolumeStats" {
+		return 10
+	}
+	return 2
+}
+
 func logGRPC(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
-	klog.V(3).Infof("GRPC call: %s", info.FullMethod)
-	klog.V(5).Infof("GRPC request: %s", protosanitizer.StripSecrets(req))
+	level := klog.Level(getLogLevel(info.FullMethod))
+	klog.V(level).Infof("GRPC call: %s", info.FullMethod)
+	klog.V(level).Infof("GRPC request: %s", protosanitizer.StripSecrets(req))
+
 	resp, err := handler(ctx, req)
 	if err != nil {
 		klog.Errorf("GRPC error: %v", err)
 	} else {
-		klog.V(5).Infof("GRPC response: %s", protosanitizer.StripSecrets(resp))
+		klog.V(level).Infof("GRPC response: %s", protosanitizer.StripSecrets(resp))
 	}
 	return resp, err
 }
diff --git a/pkg/nfs/utils_test.go b/pkg/nfs/utils_test.go
index 536f8065..1177373d 100644
--- a/pkg/nfs/utils_test.go
+++ b/pkg/nfs/utils_test.go
@@ -83,3 +83,38 @@ func TestParseEndpoint(t *testing.T) {
 		})
 	}
 }
+
+func TestGetLogLevel(t *testing.T) {
+	tests := []struct {
+		method string
+		level  int32
+	}{
+		{
+			method: "/csi.v1.Identity/Probe",
+			level:  10,
+		},
+		{
+			method: "/csi.v1.Node/NodeGetCapabilities",
+			level:  10,
+		},
+		{
+			method: "/csi.v1.Node/NodeGetVolumeStats",
+			level:  10,
+		},
+		{
+			method: "",
+			level:  2,
+		},
+		{
+			method: "unknown",
+			level:  2,
+		},
+	}
+
+	for _, test := range tests {
+		level := getLogLevel(test.method)
+		if level != test.level {
+			t.Errorf("returned level: (%v), expected level: (%v)", level, test.level)
+		}
+	}
+}