Updated CoreOS CloudFormation template - to use SourceSecurityGroupId in the ingress rules

gistfile1.json

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "CoreOS on EC2: http://coreos.com/docs/ec2/",
  "Mappings" : {
    "RegionMap" : {
      "ap-northeast-1" : {
        "AMI" : "ami-ef1f6eee"
      },
      "sa-east-1" : {
        "AMI" : "ami-0145e61c"
      },
      "ap-southeast-2" : {
        "AMI" : "ami-6b5bc251"
      },
      "ap-southeast-1" : {
        "AMI" : "ami-54b4e506"
      },
      "us-east-1" : {
        "AMI" : "ami-8f0a06e6"
      },
      "us-west-2" : {
        "AMI" : "ami-d66906e6"
      },
      "us-west-1" : {
        "AMI" : "ami-d839069d"
      },
      "eu-west-1" : {
        "AMI" : "ami-1fef1268"
      }
    }
  },
  "Parameters": {
    "InstanceType" : {
      "Description" : "EC2 instance type (m1.small, etc).",
      "Type" : "String",
      "Default" : "t1.micro",
      "AllowedValues" : [ "t1.micro",
      "m1.small",
      "m1.medium",
      "m1.large",
      "m1.xlarge",
      "m3.xlarge",
      "m3.2xlarge",
      "m2.xlarge",
      "m2.2xlarge",
      "m2.4xlarge",
      "c1.medium",
      "c1.xlarge",
      "cc1.4xlarge",
      "cc2.8xlarge",
      "cg1.4xlarge",
      "hi1.4xlarge",
      "hs1.8xlarge"],
      "ConstraintDescription" : "must be a valid EC2 instance type."
    },
    "ClusterSize": {
      "Default": "3",
      "MinValue": "3",
      "MaxValue": "12",
      "Description": "Number of nodes in cluster (3-12).",
      "Type": "Number"
    },
    "DiscoveryURL": {
      "Description": "An unique etcd cluster discovery URL. Grab a new token from https://discovery.etcd.io/new",
      "Type": "String"
    },
    "AllowSSHFrom": {
      "Description": "The net block (CIDR) that SSH is available to.",
      "Default": "0.0.0.0/0",
      "Type": "String"
    },
    "KeyPair" : {
      "Description" : "The name of an EC2 Key Pair to allow SSH access to the instance.",
      "Type" : "String"
    }
  },
  "Resources": {
    "CoreOSSecurityGroup": {
      "Type": "AWS::EC2::SecurityGroup",
      "Properties": {
        "GroupDescription": "CoreOS SecurityGroup",
        "SecurityGroupIngress": [
        {
          "IpProtocol": "tcp",
          "FromPort": "22",
          "ToPort": "22",
          "CidrIp": {
            "Ref": "AllowSSHFrom"
          }
        }
        ]
      }
    },
    "Ingress4001": {
      "Type": "AWS::EC2::SecurityGroupIngress",
      "Properties": {
        "GroupName": {
          "Ref": "CoreOSSecurityGroup"
        },
        "IpProtocol": "tcp",
        "FromPort": "4001",
        "ToPort": "4001",
        "SourceSecurityGroupId": {
          "Fn::GetAtt" : [ "CoreOSSecurityGroup", "GroupId" ] 
        }
      }
    },
    "Ingress7001": {
      "Type": "AWS::EC2::SecurityGroupIngress",
      "Properties": {
        "GroupName": {
          "Ref": "CoreOSSecurityGroup"
        },
        "IpProtocol": "tcp",
        "FromPort": "7001",
        "ToPort": "7001",
        "SourceSecurityGroupId": {
           "Fn::GetAtt" : [ "CoreOSSecurityGroup", "GroupId" ] 
        }
      }
    },
    "CoreOSServerAutoScale": {
      "Type": "AWS::AutoScaling::AutoScalingGroup",
      "Properties": {
        "AvailabilityZones": {
          "Fn::GetAZs": ""
        },
        "LaunchConfigurationName": {
          "Ref": "CoreOSServerLaunchConfig"
        },
        "MinSize": "3",
        "MaxSize": "12",
        "DesiredCapacity": {
          "Ref": "ClusterSize"
        },
        "Tags": [
        {
          "Key": "Name",
          "Value": {
            "Ref" : "AWS::StackName" 
          },
          "PropagateAtLaunch": true
        }
        ]
      }
    },
    "CoreOSServerLaunchConfig": {
      "Type": "AWS::AutoScaling::LaunchConfiguration",
      "Properties": {
        "ImageId" : {
          "Fn::FindInMap" : [ "RegionMap",
          {
            "Ref" : "AWS::Region" 
          },
          "AMI" ]
        },
        "InstanceType": {
          "Ref": "InstanceType"
        },
        "KeyName": {
          "Ref": "KeyPair"
        },
        "SecurityGroups": [{
          "Ref": "CoreOSSecurityGroup"
        }],
        "UserData" : {
          "Fn::Base64" : {
            "Fn::Join" : ["",
            [
              "#!/bin/sh\n",
            "ETCD_DISCOVERY_URL=",
            {
              "Ref" : "DiscoveryURL" 
            },
            "\n",
            "START_FLEET=1\n"
              ]
              ]
          }
        }
      }
    }
  }
}