From 809a6eba80c94e7593b5f7d1604f1f4ac8a6b61c Mon Sep 17 00:00:00 2001
From: Irbe Krumina <irbe@tailscale.com>
Date: Mon, 4 Nov 2024 18:42:51 +0000
Subject: [PATCH] cmd/k8s-operator: allow to optionally configure tailscaled
 port (#14005)

Updates tailscale/tailscale#13981

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
---
 cmd/k8s-operator/operator.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/cmd/k8s-operator/operator.go b/cmd/k8s-operator/operator.go
index d8dd403cc..116ba02e0 100644
--- a/cmd/k8s-operator/operator.go
+++ b/cmd/k8s-operator/operator.go
@@ -11,6 +11,7 @@ import (
 	"context"
 	"os"
 	"regexp"
+	"strconv"
 	"strings"
 	"time"
 
@@ -150,6 +151,13 @@ func initTSNet(zlog *zap.SugaredLogger) (*tsnet.Server, *tailscale.Client) {
 		Hostname: hostname,
 		Logf:     zlog.Named("tailscaled").Debugf,
 	}
+	if p := os.Getenv("TS_PORT"); p != "" {
+		port, err := strconv.ParseUint(p, 10, 16)
+		if err != nil {
+			startlog.Fatalf("TS_PORT %q cannot be parsed as uint16: %v", p, err)
+		}
+		s.Port = uint16(port)
+	}
 	if kubeSecret != "" {
 		st, err := kubestore.New(logger.Discard, kubeSecret)
 		if err != nil {