From 120b4e58c394726d1e0c74d46e3b99b6b7da4a18 Mon Sep 17 00:00:00 2001
From: Eric Lippmann <eric.lippmann@icinga.com>
Date: Fri, 12 Apr 2024 13:41:58 +0200
Subject: [PATCH] `node.Obtain()`: Fix `panic: failed to parse CIDR : invalid
 CIDR address:`

---
 pkg/schema/v1/node.go | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/pkg/schema/v1/node.go b/pkg/schema/v1/node.go
index 98cb3dd1..c2d33bf9 100644
--- a/pkg/schema/v1/node.go
+++ b/pkg/schema/v1/node.go
@@ -62,11 +62,13 @@ func (n *Node) Obtain(k8s kmetav1.Object) {
 
 	n.Id = types.Checksum(n.Namespace + "/" + n.Name)
 	n.PodCIDR = node.Spec.PodCIDR
-	_, cidr, err := net.ParseCIDR(n.PodCIDR)
-	if err != nil {
-		panic(errors.Wrapf(err, "failed to parse CIDR %s", n.PodCIDR))
+	if n.PodCIDR != "" {
+		_, cidr, err := net.ParseCIDR(n.PodCIDR)
+		if err != nil {
+			panic(errors.Wrapf(err, "failed to parse CIDR %s", n.PodCIDR))
+		}
+		n.NumIps = knet.RangeSize(cidr) - 2
 	}
-	n.NumIps = knet.RangeSize(cidr) - 2
 	n.Unschedulable = types.Bool{
 		Bool:  node.Spec.Unschedulable,
 		Valid: true,