From 3a0fa155bc4db7e22f54920d57b75e15d943e744 Mon Sep 17 00:00:00 2001
From: Michal Schott <schott.michal@gmail.com>
Date: Thu, 7 May 2020 13:13:36 +0200
Subject: [PATCH] manual cherry-pick #8994 into 1.17.

---
 pkg/instancegroups/instancegroups.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkg/instancegroups/instancegroups.go b/pkg/instancegroups/instancegroups.go
index 280e24afeb20d..31394967d0483 100644
--- a/pkg/instancegroups/instancegroups.go
+++ b/pkg/instancegroups/instancegroups.go
@@ -346,10 +346,16 @@ func (r *RollingUpdateInstanceGroup) DrainNode(u *cloudinstances.CloudInstanceGr
 	}
 
 	if err := drain.RunCordonOrUncordon(helper, u.Node, true); err != nil {
+		if apierrors.IsNotFound(err) {
+			return nil
+		}
 		return fmt.Errorf("error cordoning node: %v", err)
 	}
 
 	if err := drain.RunNodeDrain(helper, u.Node.Name); err != nil {
+		if apierrors.IsNotFound(err) {
+			return nil
+		}
 		return fmt.Errorf("error draining node: %v", err)
 	}