From 9493c48653e3a1068f6bd0612838b94902416507 Mon Sep 17 00:00:00 2001
From: Henrik Schmidt <henrik@loodse.com>
Date: Tue, 26 Sep 2017 12:58:12 +0200
Subject: [PATCH] Log error when a healthz check fails

Kubernetes-commit: 1bcfe909125acc567258d4937fc2c08206d14d08
---
 pkg/server/healthz/healthz.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkg/server/healthz/healthz.go b/pkg/server/healthz/healthz.go
index d5dbb5ccd..bd8bfe7b5 100644
--- a/pkg/server/healthz/healthz.go
+++ b/pkg/server/healthz/healthz.go
@@ -106,9 +106,10 @@ func handleRootHealthz(checks ...HealthzChecker) http.HandlerFunc {
 		failed := false
 		var verboseOut bytes.Buffer
 		for _, check := range checks {
-			if check.Check(r) != nil {
+			if err := check.Check(r); err != nil {
 				// don't include the error since this endpoint is public.  If someone wants more detail
 				// they should have explicit permission to the detailed checks.
+				glog.V(6).Infof("healthz check %v failed: %v", check.Name(), err)
 				fmt.Fprintf(&verboseOut, "[-]%v failed: reason withheld\n", check.Name())
 				failed = true
 			} else {