Amazon Cloud Formation Template for Node.js v0.6

aws-cloudformation-template-for-nodejs-v0.6.json

{
  "AWSTemplateFormatVersion": "2010-09-09",

  "Description": "CloudFormation Sample Template for Node.js application. **WARNING** This template creates an Amazon EC2 instance. You will be billed for the AWS resources used if you create a stack from this template.",

  "Parameters": {
    "InstanceType": {
      "Description": "EC2 instance type",
      "Type": "String",
      "Default": "t1.micro",
      "AllowedValues": ["t1.micro", "m1.small", "m1.medium", "m1.large", "m1.xlarge", "m2.xlarge", "m2.2xlarge", "m2.4xlarge", "c1.medium", "c1.xlarge"],
      "ConstraintDescription": "must be a valid EC2 instance type."
    },

    "RootDevice": {
      "Description": "EC2 root device type ('ebs' or 'instanceStore')",
      "Type": "String",
      "Default": "ebs",
      "AllowedValues": ["ebs", "instanceStore"],
      "ConstraintDescription": "must be 'ebs' or 'instanceStore."
    },

    "KeyName": {
      "Description": "Name of an existing EC2 KeyPair to enable SSH access to the application server.",
      "Type": "String"
    },

    "ServerPort": {
      "Description": "TCP/IP port of the application server.",
      "Type": "Number",
      "Default": 3000,
      "MinValue": 1025,
      "ConstraintDescription": "must be number and greater than well-known port number (> 1024)."
    }
  },

  "Mappings": {

    "AWSRegionArch2AMI": {
      "us-east-1": {
        "ebs": "NOT_YET_SUPPORTED",
        "instanceStore": "NOT_YET_SUPPORTED"
      },
      "us-west-2": {
        "ebs": "NOT_YET_SUPPORTED",
        "instanceStore": "NOT_YET_SUPPORTED"
      },
      "us-west-1": {
        "ebs": "NOT_YET_SUPPORTED",
        "instanceStore": "NOT_YET_SUPPORTED"
      },
      "eu-west-1": {
        "ebs": "NOT_YET_SUPPORTED",
        "instanceStore": "NOT_YET_SUPPORTED"
      },
      "ap-southeast-1": {
        "ebs": "NOT_YET_SUPPORTED",
        "instanceStore": "NOT_YET_SUPPORTED"
      },
      "ap-northeast-1": {
        "ebs": "ami-e47acbe5",
        "instanceStore": "ami-047bca05"
      },
      "sa-east-1": {
        "ebs": "NOT_YET_SUPPORTED",
        "instanceStore": "NOT_YET_SUPPORTED"
      }
    }
  },

  "Resources": {
    "CfnUser": {
      "Type": "AWS::IAM::User",
      "Properties": {
        "Path": "/",
        "Policies": [
          {
            "PolicyName": "root",
            "PolicyDocument": {
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": "cloudformation:DescribeStackResource",
                  "Resource": "*"
                }
              ]
            }
          }
        ]
      }
    },


    "HostKeys": {
      "Type": "AWS::IAM::AccessKey",
      "Properties": {
        "UserName": {
          "Ref": "CfnUser"
        }
      }
    },

    "AppServer": {
      "Type": "AWS::EC2::Instance",
      "Metadata": {
        "AWS::CloudFormation::Init": {
          "config": {
            "packages": {
              "yum": {
                "git" : [],
                "nodejs-compat-symlinks" : [],
                "npm" : []
              }
            }
          }
        }
      },

      "Properties": {
        "ImageId": { "Fn::FindInMap": [ "AWSRegionArch2AMI", { "Ref": "AWS::Region" }, { "Ref": "RootDevice" } ] },
        "InstanceType": { "Ref": "InstanceType" },
        "SecurityGroups": [ { "Ref": "AppServerSecurityGroup" } ],
        "KeyName": { "Ref": "KeyName" },
        "UserData": {
          "Fn::Base64": {
            "Fn::Join": ["", [
              "#!/bin/bash -v\n",
              "yum update -y aws-cfn-bootstrap\n",

              "# Install Node.js from Official RPM\n",
              "# @see https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager\n",
              "yum localinstall -y --nogpgcheck http://nodejs.tchol.org/repocfg/amzn1/nodejs-stable-release.noarch.rpm || error_exit 'Failed to install Node.js'\n",

              "# Helper function\n",
              "function error_exit\n",
              "{\n",
              "  /opt/aws/bin/cfn-signal -e 1 -r \"$1\" '", { "Ref": "WaitHandle" }, "'\n",
              "  exit 1\n",
              "}\n",

              "# Install Git and Node.js\n",
              "/opt/aws/bin/cfn-init -s ", { "Ref": "AWS::StackName" }, " -r AppServer ",
              "    --access-key ", { "Ref": "HostKeys" },
              "    --secret-key ", { "Fn::GetAtt": ["HostKeys", "SecretAccessKey"] },
              "    --region ", { "Ref": "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",

              "# All is well so signal success\n",
              "/opt/aws/bin/cfn-signal -e 0 -r \"AppServer setup complete\" '", { "Ref": "WaitHandle" }, "'\n"
            ]]
          }
        }
      }
    },

    "WaitHandle": {
      "Type": "AWS::CloudFormation::WaitConditionHandle"
    },

    "WaitCondition": {
      "Type": "AWS::CloudFormation::WaitCondition",
      "DependsOn": "AppServer",
      "Properties": {
        "Handle": { "Ref": "WaitHandle" },
        "Timeout": "600"
      }
    },

    "AppServerSecurityGroup": {
      "Type": "AWS::EC2::SecurityGroup",
      "Properties": {
        "GroupDescription": "Enable HTTP access via port 3000",
        "SecurityGroupIngress": [
          {
            "IpProtocol": "tcp",
            "FromPort": 22,
            "ToPort": 22,
            "CidrIp": "0.0.0.0/0"
          },
          {
            "IpProtocol": "tcp",
            "FromPort": { "Ref": "ServerPort" },
            "ToPort": { "Ref": "ServerPort" },
            "CidrIp": "0.0.0.0/0"
          }
        ]
      }
    }
  },

  "Outputs": {
    "WebsiteURL": {
      "Value": {
        "Fn::Join": ["", ["http://", { "Fn::GetAtt": [ "AppServer", "PublicDnsName" ] }, ":" , { "Ref": "ServerPort" }]]
      },
      "Description": "Node.js Application URL"
    }
  }
}

The port number is wrong in the AppServerSecurityGroup perhaps.