Signed-off-by: Aleksey Savaitan <a.savaitan@yadro.com>

@@ -0,0 +1,121 @@
+package tracing_test

@@ -0,0 +1,25 @@
+package testdata

@@ -138,1 +143,3 @@
-		return otlptracegrpc.New(ctx, otlptracegrpc.WithEndpoint(cfg.Endpoint), otlptracegrpc.WithInsecure())
+		securityOption := otlptracegrpc.WithInsecure()
+		if cfg.ServerCaCertPath != "" {
+			ca, err := os.ReadFile(cfg.ServerCaCertPath)

@@ -0,0 +16,4 @@
+// Path returns the absolute path the given relative file or directory path,
+// relative to the frostfs-observability/testdata directory in the user's GOPATH.
+// If rel is already absolute, it is returned unmodified.
+func Path(rel string) string {

@@ -64,6 +69,10 @@ func (c *Config) hasChange(other *Config) bool {
 		return !c.serviceInfoEqual(other)
 	}
 
+	if other.Exporter == OTLPgRPCExporter && !c.ServerCaCertPool.Equal(other.ServerCaCertPool) {

@@ -18,2 +19,4 @@
+	"google.golang.org/grpc/credentials"
 )
 
+var ErrEmptyServerRootCaPool = fmt.Errorf("empty server root ca cert pool")

@@ -138,1 +142,3 @@
-		return otlptracegrpc.New(ctx, otlptracegrpc.WithEndpoint(cfg.Endpoint), otlptracegrpc.WithInsecure())
+		securityOption := otlptracegrpc.WithInsecure()
+		if cfg.ServerCaCertPool != nil {
+			if cfg.ServerCaCertPool.Equal(x509.NewCertPool()) {