diff --git a/cluster/validation.go b/cluster/validation.go
index fb7a1497..d6a1743c 100644
--- a/cluster/validation.go
+++ b/cluster/validation.go
@@ -130,14 +130,13 @@ func validateServicesOptions(c *Cluster) error {
 
 func validateEtcdBackupOptions(c *Cluster) error {
 	if c.Services.Etcd.BackupConfig != nil {
-		if c.Services.Etcd.BackupConfig.S3BackupConfig == nil {
-			return fmt.Errorf("etcd backup is enabled but no s3 backend is specified")
-		}
-		if len(c.Services.Etcd.BackupConfig.S3BackupConfig.Endpoint) == 0 {
-			return fmt.Errorf("etcd s3 backup backend endpoint can't be empty")
-		}
-		if len(c.Services.Etcd.BackupConfig.S3BackupConfig.BucketName) == 0 {
-			return fmt.Errorf("etcd s3 backup backend bucketName can't be empty")
+		if c.Services.Etcd.BackupConfig.S3BackupConfig != nil {
+			if len(c.Services.Etcd.BackupConfig.S3BackupConfig.Endpoint) == 0 {
+				return fmt.Errorf("etcd s3 backup backend endpoint can't be empty")
+			}
+			if len(c.Services.Etcd.BackupConfig.S3BackupConfig.BucketName) == 0 {
+				return fmt.Errorf("etcd s3 backup backend bucketName can't be empty")
+			}
 		}
 	}
 	return nil
diff --git a/services/etcd.go b/services/etcd.go
index bd1008df..71551482 100644
--- a/services/etcd.go
+++ b/services/etcd.go
@@ -275,7 +275,7 @@ func RunEtcdSnapshotSave(ctx context.Context, etcdHost *hosts.Host, prsMap map[s
 		imageCfg.Cmd = append(imageCfg.Cmd, "--creation="+es.Creation)
 	}
 
-	if es.BackupConfig != nil && es.BackupConfig.S3BackupConfig != nil {
+	if es.BackupConfig != nil {
 		imageCfg = configS3BackupImgCmd(ctx, imageCfg, es.BackupConfig)
 	}
 	hostCfg := &container.HostConfig{
@@ -447,17 +447,21 @@ func GetEtcdSnapshotChecksum(ctx context.Context, etcdHost *hosts.Host, prsMap m
 }
 
 func configS3BackupImgCmd(ctx context.Context, imageCfg *container.Config, bc *v3.BackupConfig) *container.Config {
-	log.Infof(ctx, "Invoking s3 backup server cmd config, bucketName:%s, endpoint:%s", bc.S3BackupConfig.BucketName, bc.S3BackupConfig.Endpoint)
 	cmd := []string{
-		"--s3-backup=true",
-		"--s3-endpoint=" + bc.S3BackupConfig.Endpoint,
-		"--s3-accessKey=" + bc.S3BackupConfig.AccessKey,
-		"--s3-secretKey=" + bc.S3BackupConfig.SecretKey,
-		"--s3-bucketName=" + bc.S3BackupConfig.BucketName,
-		"--s3-region=" + bc.S3BackupConfig.Region,
 		"--creation=" + fmt.Sprintf("%dh", bc.IntervalHours),
 		"--retention=" + fmt.Sprintf("%dh", bc.Retention*bc.IntervalHours),
 	}
+
+	if bc.S3BackupConfig != nil {
+		cmd = append(cmd, []string{
+			"--s3-backup=true",
+			"--s3-endpoint=" + bc.S3BackupConfig.Endpoint,
+			"--s3-accessKey=" + bc.S3BackupConfig.AccessKey,
+			"--s3-secretKey=" + bc.S3BackupConfig.SecretKey,
+			"--s3-bucketName=" + bc.S3BackupConfig.BucketName,
+			"--s3-region=" + bc.S3BackupConfig.Region,
+		}...)
+	}
 	imageCfg.Cmd = append(imageCfg.Cmd, cmd...)
 	return imageCfg
 }