From 686fba0637541cc913185bc7dec176565393a719 Mon Sep 17 00:00:00 2001
From: Katsuhisa Kitano <91katsuhisa@gmail.com>
Date: Fri, 13 Sep 2024 00:19:22 +0900
Subject: [PATCH] Fix: Replace SecurityGroups with SecurityGroupIds in EC2
 resource

- Updated the EC2 instance template to reference security groups by ID instead of name.
- Resolved conflict between subnet and groupName parameters, preventing errors during stack creation.
---
 EC2/EC2InstanceWithSecurityGroupSample.json | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/EC2/EC2InstanceWithSecurityGroupSample.json b/EC2/EC2InstanceWithSecurityGroupSample.json
index 1c8cf8ab..33c07727 100644
--- a/EC2/EC2InstanceWithSecurityGroupSample.json
+++ b/EC2/EC2InstanceWithSecurityGroupSample.json
@@ -91,9 +91,12 @@
                         }
                     ]
                 },
-                "SecurityGroups": [
+                "SecurityGroupIds": [
                     {
-                        "Ref": "InstanceSecurityGroup"
+                        "Fn::GetAtt": [
+                            "InstanceSecurityGroup",
+                            "GroupId"
+                        ]
                     }
                 ],
                 "KeyName": {