From 73e481e7ce94f62d03580088aa1a98f200d936bd Mon Sep 17 00:00:00 2001
From: Mikkel Oscar Lyderik Larsen <mikkel.larsen@zalando.de>
Date: Wed, 15 Nov 2023 23:39:55 +0100
Subject: [PATCH] Allow master to master communication via overlay

Signed-off-by: Mikkel Oscar Lyderik Larsen <mikkel.larsen@zalando.de>
---
 cluster/cluster.yaml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/cluster/cluster.yaml b/cluster/cluster.yaml
index 34bea71bae..7f8f042f47 100644
--- a/cluster/cluster.yaml
+++ b/cluster/cluster.yaml
@@ -178,6 +178,17 @@ Resources:
           Value: owned
       ToPort: 8472
     Type: 'AWS::EC2::SecurityGroupIngress'
+  MasterSecurityGroupIngressFromMasterFlannelToMaster:
+    Properties:
+      FromPort: 8472
+      GroupId: !Ref MasterSecurityGroup
+      IpProtocol: udp
+      SourceSecurityGroupId: !Ref MasterSecurityGroup
+      Tags:
+        - Key: 'kubernetes.io/cluster/{{.Cluster.ID}}'
+          Value: owned
+      ToPort: 8472
+    Type: 'AWS::EC2::SecurityGroupIngress'
   MasterSecurityGroupIngressFromMaster:
     Properties:
       FromPort: 443