third_party/go/patches/k8s-reserve-metropolis-ports.patch

From b10b2922f0b4fb114b6b535df1ba9fca583c6cf2 Mon Sep 17 00:00:00 2001
From: Tim Windelschmidt <tim@monogon.tech>
Date: Sat, 9 Sep 2023 14:22:59 +0200
Subject: [PATCH 6/6] reserve metropolis system ports

---
 .../service/portallocator/controller/repair.go    | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/pkg/registry/core/service/portallocator/controller/repair.go b/pkg/registry/core/service/portallocator/controller/repair.go
index fa870760490..0f67fe7eb9b 100644
--- a/pkg/registry/core/service/portallocator/controller/repair.go
+++ b/pkg/registry/core/service/portallocator/controller/repair.go
@@ -22,6 +22,8 @@ import (
 	"sync"
 	"time"

+	"source.monogon.dev/metropolis/node"
+
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -133,6 +136,18 @@ func (c *Repair) doRunOnce() error {
 		return fmt.Errorf("unable to refresh the port block: %v", err)
 	}

+	// pretend that metropolis system ports are in use by an actual service
+	var metropolisService corev1.Service
+	for _, p := range node.SystemPorts {
+		metropolisService.Spec.Ports = append(metropolisService.Spec.Ports, corev1.ServicePort{
+			Name:     p.String(),
+			Protocol: corev1.ProtocolTCP,
+			Port:     int32(p),
+			NodePort: int32(p),
+		})
+	}
+	list.Items = append(list.Items, metropolisService)
+
 	rebuilt, err := portallocator.NewInMemory(c.portRange)
 	if err != nil {
 		return fmt.Errorf("unable to create port allocator: %v", err)
-- 
2.41.0