From 75ef7598106e8c470825ca1766b781a32a308b60 Mon Sep 17 00:00:00 2001
From: SataQiu <shidaqiu2018@gmail.com>
Date: Tue, 28 Feb 2023 22:58:40 +0800
Subject: [PATCH] kubelet: avoid duplicate printing the flag deprecation
 warnings during re-parsing

---
 cmd/kubelet/app/server.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cmd/kubelet/app/server.go b/cmd/kubelet/app/server.go
index 4dd27a08bf0..ec622a268a4 100644
--- a/cmd/kubelet/app/server.go
+++ b/cmd/kubelet/app/server.go
@@ -22,6 +22,7 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
+	"io"
 	"math"
 	"net"
 	"net/http"
@@ -321,6 +322,8 @@ func kubeletConfigFlagPrecedence(kc *kubeletconfiginternal.KubeletConfiguration,
 	options.AddKubeletConfigFlags(fs, kc)
 	// Remember original feature gates, so we can merge with flag gates later
 	original := kc.FeatureGates
+	// avoid duplicate printing the flag deprecation warnings during re-parsing
+	fs.SetOutput(io.Discard)
 	// re-parse flags
 	if err := fs.Parse(args); err != nil {
 		return err