CloudFormation script for Django/ElasticBeansTalk with Jenkins environment

djangoeb.js

{
    "AWSTemplateFormatVersion" : "2010-09-09",
  
    "Description" : "AWS CloudFormation Template: This template installs a single-instance with dev environment for elastic beanstalk as well as Jenkins server. 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" : {
	"EC2Tag" : {
	    "Description" : "EC2 tag name",
	    "Type" : "String"
	},    

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

	"DevServerSecurityGroup" : {
	    "Description" : "Name of an existing EC2 Security Group Name for the instances",
	    "Type" : "String"
	},    

	"InstanceType" : {
	    "Description" : "DevServer 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",
		"cc1.4xlarge",
		"cc2.8xlarge",
		"cg1.4xlarge"],
	    "ConstraintDescription" : "must be a valid EC2 instance type."
	}
    },
  

    "Mappings" : {
	"AWSInstanceType2Arch" : {
	    "t1.micro"    : { "Arch" : "64" },
	    "m1.small"    : { "Arch" : "64" },
	    "m1.medium"   : { "Arch" : "64" },
	    "m1.large"    : { "Arch" : "64" },
	    "m1.xlarge"   : { "Arch" : "64" },
	    "m2.xlarge"   : { "Arch" : "64" },
	    "m2.2xlarge"  : { "Arch" : "64" },
	    "m2.4xlarge"  : { "Arch" : "64" },
	    "c1.medium"   : { "Arch" : "64" },
	    "c1.xlarge"   : { "Arch" : "64" },
	    "cc1.4xlarge" : { "Arch" : "64HVM" },
	    "cc2.8xlarge" : { "Arch" : "64HVM" },
	    "cg1.4xlarge" : { "Arch" : "64HVM" }
	},

	"AWSRegionArch2AMI" : {
	    "us-east-1"      : { "32" : "ami-31814f58", "64" : "ami-1b814f72", "64HVM" : "ami-0da96764" },
	    "us-west-2"      : { "32" : "ami-38fe7308", "64" : "ami-30fe7300", "64HVM" : "NOT_YET_SUPPORTED" },
	    "us-west-1"      : { "32" : "ami-11d68a54", "64" : "ami-1bd68a5e", "64HVM" : "NOT_YET_SUPPORTED" },
	    "eu-west-1"      : { "32" : "ami-973b06e3", "64" : "ami-953b06e1", "64HVM" : "NOT_YET_SUPPORTED" },
	    "ap-southeast-1" : { "32" : "ami-b4b0cae6", "64" : "ami-beb0caec", "64HVM" : "NOT_YET_SUPPORTED" },
	    "ap-northeast-1" : { "32" : "ami-0644f007", "64" : "ami-0a44f00b", "64HVM" : "NOT_YET_SUPPORTED" },
	    "sa-east-1"      : { "32" : "ami-3e3be423", "64" : "ami-3c3be421", "64HVM" : "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"}
	    }
	},


	"DevServer": {  
	    "Type": "AWS::EC2::Instance",
	    "Metadata" : {
		"AWS::CloudFormation::Init" : {
		    "config" : {
			"packages" : {
			    "yum" : {
				"python27"       : [],
				"python27-devel" : [],
				"gcc"            : [],
				"mysql-devel"    : [],
				"python-devel"   : [],
				"git"            : [],
				"emacs"          : [],
				"mysql"          : []
			    }
			},
			"files" : {
			    "/home/ec2-user/.bashrc" :
			    {
				"content" :
				{
				    "Fn::Join" :
				    [
					"",
					[
					    "if [ -f /etc/bashrc ]; then\n",
					    "        . /etc/bashrc\n",
					    "fi\n",
					    "alias eb=\"python2.7 $HOME/AWS-ElasticBeanstalk-CLI-2.1/eb/linux/python2.7/eb\"\n",
					    "if [ -e $HOME/.virtualenvs ]; then\n",
					    "    source virtualenvwrapper.sh\n",
					    "    workon djangoenv\n",
					    "else\n",
					    "    source virtualenvwrapper.sh\n",
					    "    mkvirtualenv -p python2.6 djangoenv\n",
					    "    pip install django==1.4.1\n",
					    "    pip install mysql-python==1.2.3\n",
					    "fi\n"
					]
				    ]
				},
				"mode"  : "000644",
				"owner" : "ec2-user",
				"group" : "ec2-user"
			    }
			}
		    }
		}
	    },

	    "Properties": {
		"Tags": [
		    {
			"Key": "Name",
			"Value": {"Ref": "EC2Tag"}
		    }
		],
		"ImageId" : {
		    "Fn::FindInMap" : [
			"AWSRegionArch2AMI", {
			    "Ref" : "AWS::Region"
			},
			{
			    "Fn::FindInMap" : [
				"AWSInstanceType2Arch", {
				    "Ref" : "InstanceType"
				},
				"Arch"
			    ]
			}
		    ]
		},
		"InstanceType"   : { "Ref" : "InstanceType" },
		"SecurityGroups" : [{ "Ref" : "DevServerSecurityGroup"}],
		"KeyName"        : { "Ref" : "KeyName" },
		"UserData"       : {
		    "Fn::Base64" : {
			"Fn::Join" : [
			    "", [
				"#!/bin/bash -v\n",
				"yum update -y",
				"yum update -y aws-cfn-bootstrap\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 Packages\n",
				"/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackName" }, " -r DevServer ",
				"    --access-key ",  { "Ref" : "HostKeys" },
				"    --secret-key ", {"Fn::GetAtt": ["HostKeys", "SecretAccessKey"]},
				"    --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",

				"# Install pip\n",
				"curl https://raw.github.com/pypa/pip/master/contrib/get-pip.py | python\n",

				"# Install VirtualenvWrapper\n",
				"pip install virtualenvwrapper\n",

				"# Install AWS Kit\n",
				"cd /home/ec2-user; wget https://s3.amazonaws.com/elasticbeanstalk/cli/AWS-ElasticBeanstalk-CLI-2.1.zip\n",
				"cd /home/ec2-user; unzip AWS-ElasticBeanstalk-CLI-2.1.zip\n",

				"# Install Jenkins\n",
				"wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.repo\n",
				"rpm --import http://pkg.jenkins-ci.org/redhat/jenkins-ci.org.key\n",
				"yum -y install jenkins\n",
				"/etc/init.d/jenkins start\n",
				"chkconfig jenkins on\n",

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

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

	"WaitCondition" : {
	    "Type" : "AWS::CloudFormation::WaitCondition",
	    "DependsOn" : "DevServer",
	    "Properties" : {
		"Handle" : {"Ref" : "WaitHandle"},
		"Timeout" : "300"
	    }
	}
    }
}

@masayang any idea if its possible top use AWS::ElasticBeanstalk::Environment resource to specify the installation packages for yum?