From 151d316e29165f3a86e15ebdbd79f9263e5a7b43 Mon Sep 17 00:00:00 2001
From: Andrea Scarpino <scarpino@spaziodati.eu>
Date: Thu, 11 Jul 2024 14:54:19 +0200
Subject: [PATCH] Mark krelay servers as safe to evict by the cluster
 autoscaler

The kubernetes cluster autoscaler doesn't remove pods that are not backed by a controller object (so not created by deployment, replica set, job, stateful set etc), thus without this annotation, krelay is preventing it from removing a node
---
 cmd/client/utils.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cmd/client/utils.go b/cmd/client/utils.go
index 55986b0..3675779 100644
--- a/cmd/client/utils.go
+++ b/cmd/client/utils.go
@@ -44,6 +44,9 @@ func createServerPod(ctx context.Context, cs kubernetes.Interface, svrImg, names
 				"app.kubernetes.io/name": constants.ServerName,
 				"app":                    constants.ServerName,
 			},
+			Annotations: map[string]string{
+				"cluster-autoscaler.kubernetes.io/safe-to-evict": "true",
+			},
 		},
 		Spec: corev1.PodSpec{
 			AutomountServiceAccountToken: toPtr(false),