{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "Deis on EC2: http://deis.io/",
  "Mappings" : {
      "RegionMap" : {
          "ap-northeast-1" : {
              "AMI" : "ami-85265f84"
          },
          "sa-east-1" : {
              "AMI" : "ami-9757f58a"
          },
          "ap-southeast-2" : {
              "AMI" : "ami-815fc7bb"
          },
          "ap-southeast-1" : {
              "AMI" : "ami-b80350ea"
          },
          "us-east-1" : {
              "AMI" : "ami-97617dfe"
          },
          "us-west-2" : {
              "AMI" : "ami-0ccfa43c"
          },
          "us-west-1" : {
              "AMI" : "ami-f8d3eabd"
          },
          "eu-west-1" : {
              "AMI" : "ami-dbdc27ac"
          }
      }
  },
  "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"
    },
    "AdvertisedIPAddress": {
      "Description": "Use 'private' if your etcd cluster is within one region or 'public' if it spans regions or cloud providers.",
      "Default": "private",
      "AllowedValues": ["private", "public"],
      "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"}}
        ]
      }
    },
    "DeisSecurityGroup": {
      "Type": "AWS::EC2::SecurityGroup",
      "Properties": {
        "GroupDescription": "Deis SecurityGroup",
        "SecurityGroupIngress": [
          {"IpProtocol": "tcp", "FromPort": "80", "ToPort": "80", "CidrIp": "0.0.0.0/0"},
          {"IpProtocol": "tcp", "FromPort": "2222", "ToPort": "2222", "CidrIp": "0.0.0.0/0"},
          {"IpProtocol": "tcp", "FromPort": "8000", "ToPort": "8000", "CidrIp": "0.0.0.0/0"}
        ]
      }
    },
    "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" ]
        }
      }
    },
    "Ingress514TCP": {
      "Type": "AWS::EC2::SecurityGroupIngress",
      "Properties": {
        "GroupName": {"Ref": "DeisSecurityGroup"}, "IpProtocol": "tcp", "FromPort": "514", "ToPort": "514", "SourceSecurityGroupId": {
          "Fn::GetAtt" : [ "DeisSecurityGroup", "GroupId" ]
        }
      }
    },
    "Ingress514UDP": {
      "Type": "AWS::EC2::SecurityGroupIngress",
      "Properties": {
        "GroupName": {"Ref": "DeisSecurityGroup"}, "IpProtocol": "udp", "FromPort": "514", "ToPort": "514", "SourceSecurityGroupId": {
          "Fn::GetAtt" : [ "DeisSecurityGroup", "GroupId" ]
        }
      }
    },
    "Ingress5000": {
      "Type": "AWS::EC2::SecurityGroupIngress",
      "Properties": {
        "GroupName": {"Ref": "DeisSecurityGroup"}, "IpProtocol": "tcp", "FromPort": "5000", "ToPort": "5000", "SourceSecurityGroupId": {
          "Fn::GetAtt" : [ "DeisSecurityGroup", "GroupId" ]
        }
      }
    },
    "Ingress5432": {
      "Type": "AWS::EC2::SecurityGroupIngress",
      "Properties": {
        "GroupName": {"Ref": "DeisSecurityGroup"}, "IpProtocol": "tcp", "FromPort": "5432", "ToPort": "5432", "SourceSecurityGroupId": {
          "Fn::GetAtt" : [ "DeisSecurityGroup", "GroupId" ]
        }
      }
    },
    "Ingress6379": {
      "Type": "AWS::EC2::SecurityGroupIngress",
      "Properties": {
        "GroupName": {"Ref": "DeisSecurityGroup"}, "IpProtocol": "tcp", "FromPort": "6379", "ToPort": "6379", "SourceSecurityGroupId": {
          "Fn::GetAtt" : [ "DeisSecurityGroup", "GroupId" ]
        }
      }
    },
    "IngressEphemeral": {
      "Type": "AWS::EC2::SecurityGroupIngress",
      "Properties": {
        "GroupName": {"Ref": "DeisSecurityGroup"}, "IpProtocol": "tcp", "FromPort": "49156", "ToPort": "65535", "SourceSecurityGroupId": {
          "Fn::GetAtt" : [ "DeisSecurityGroup", "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"}, {"Ref": "DeisSecurityGroup"}],
        "UserData" : { "Fn::Base64":
          { "Fn::Join": [ "", [
            "#cloud-config\n\n",
            "coreos:\n",
            "  etcd:\n",
            "    discovery: ", { "Ref": "DiscoveryURL" }, "\n",
            "    addr: $", { "Ref": "AdvertisedIPAddress" }, "_ipv4:4001\n",
            "    peer-addr: $", { "Ref": "AdvertisedIPAddress" }, "_ipv4:7001\n",
            "  units:\n",
            "    - name: etcd.service\n",
            "      command: start\n",
            "    - name: fleet.service\n",
            "      command: start\n"
            ] ]
          }
        }
      }
    }
  }
}