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

  "Description" : "AWS CloudFormation Sample Template Joomla!_Multi_AZ: Joomla! is a free, open-source content management system (CMS) and application framework. This template installs a highly-available, scalable Joomla! deployment using a multi-az Amazon RDS database instance for storage. It demonstrates using the AWS CloudFormation bootstrap scripts to install packages and files at instance launch time. **WARNING** This template creates one or more Amazon EC2 instances and an Amazon RDS database instance. You will be billed for the AWS resources used if you create a stack from this template.",

  "Parameters" : {

    "KeyName": {
      "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instances",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "255",
      "AllowedPattern" : "[\\x20-\\x7E]*",
      "ConstraintDescription" : "can contain only ASCII characters."
    },

    "InstanceType" : {
      "Description" : "WebServer EC2 instance type",
      "Type" : "String",
      "Default" : "m1.small",
      "AllowedValues" : [ "t1.micro","m1.small","m1.medium","m1.large","m1.xlarge","m2.xlarge","m2.2xlarge","m2.4xlarge","m3.xlarge","m3.2xlarge","c1.medium","c1.xlarge","cc1.4xlarge","cc2.8xlarge","cg1.4xlarge"],
      "ConstraintDescription" : "must be a valid EC2 instance type."
    },

    "AdminPassword": {
      "NoEcho": "true",
      "Description" : "The Joomla! admin account password",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "41",
      "AllowedPattern" : "[a-zA-Z0-9]*",
      "ConstraintDescription" : "must contain only alphanumeric characters."
    },

    "DBName": {
      "Default": "joomladb",
      "Description" : "The Joomla! database name",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "64",
      "AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
      "ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
    },

    "DBUsername": {
      "Default": "admin",
      "NoEcho": "true",
      "Description" : "The Joomla! database admin account username",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "16",
      "AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
      "ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
    },

    "DBPassword": {
      "Default": "password",
      "NoEcho": "true",
      "Description" : "The Joomla! database admin account password",
      "Type": "String",
      "MinLength": "8",
      "MaxLength": "41",
      "AllowedPattern" : "[a-zA-Z0-9]*",
      "ConstraintDescription" : "must contain only alphanumeric characters."
    },

    "DBClass" : {
      "Default" : "db.m1.small",
      "Description" : "Database instance class",
      "Type" : "String",
      "AllowedValues" : [ "db.m1.small", "db.m1.large", "db.m1.xlarge", "db.m2.xlarge", "db.m2.2xlarge", "db.m2.4xlarge" ],
      "ConstraintDescription" : "must select a valid database instance type."
    },

    "DBAllocatedStorage" : {
      "Default": "5",
      "Description" : "The size of the database (Gb)",
      "Type": "Number",
      "MinValue": "5",
      "MaxValue": "1024",
      "ConstraintDescription" : "must be between 5 and 1024Gb."
    },

    "MultiAZDatabase": {
      "Default": "true",
      "Description" : "Create a multi-AZ MySQL Amazon RDS database instance",
      "Type": "String",
      "AllowedValues" : [ "true", "false" ],
      "ConstraintDescription" : "must be either true or false."
    },

    "WebServerCapacity": {
      "Default": "2",
      "Description" : "The initial number of WebServer instances",
      "Type": "Number",
      "MinValue": "1",
      "MaxValue": "5",
      "ConstraintDescription" : "must be between 1 and 5 EC2 instances."
    },
    "SSHLocation" : {
      "Description" : " The IP address range that can be used to SSH to the EC2 instances",
      "Type": "String",
      "MinLength": "9",
      "MaxLength": "18",
      "Default": "0.0.0.0/0",
      "AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})",
      "ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x."
   }
  },

  "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" },
      "m3.xlarge"   : { "Arch" : "64" },
      "m3.2xlarge"  : { "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-a0cd60c9", "64" : "ami-aecd60c7", "64HVM" : "ami-a8cd60c1" },
      "us-west-2"      : { "32" : "ami-46da5576", "64" : "ami-48da5578", "64HVM" : "NOT_YET_SUPPORTED" },
      "us-west-1"      : { "32" : "ami-7d4c6938", "64" : "ami-734c6936", "64HVM" : "NOT_YET_SUPPORTED" },
      "eu-west-1"      : { "32" : "ami-61555115", "64" : "ami-6d555119", "64HVM" : "ami-67555113" },
      "ap-southeast-1" : { "32" : "ami-220b4a70", "64" : "ami-3c0b4a6e", "64HVM" : "NOT_YET_SUPPORTED" },
      "ap-southeast-2" : { "32" : "ami-b3990e89", "64" : "ami-bd990e87", "64HVM" : "NOT_YET_SUPPORTED" },
      "ap-northeast-1" : { "32" : "ami-2a19aa2b", "64" : "ami-2819aa29", "64HVM" : "NOT_YET_SUPPORTED" },
      "sa-east-1"      : { "32" : "ami-f836e8e5", "64" : "ami-fe36e8e3", "64HVM" : "NOT_YET_SUPPORTED" }
    }
  },

  "Resources" : {

  "ElasticLoadBalancer" : {
      "Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
      "Metadata" : {
        "Comment" : "Configure the Load Balancer with a simple health check and cookie-based stickiness"
      },
      "Properties" : {
        "AvailabilityZones" : { "Fn::GetAZs" : "" },
        "LBCookieStickinessPolicy" : [ {
          "PolicyName" : "CookieBasedPolicy",
          "CookieExpirationPeriod" : "30"
        } ],
        "Listeners" : [ {
          "LoadBalancerPort" : "80",
          "InstancePort" : "80",
          "Protocol" : "HTTP",
          "PolicyNames" : [ "CookieBasedPolicy" ]
        } ],
        "HealthCheck" : {
          "Target" : "HTTP:80/",
          "HealthyThreshold" : "2",
          "UnhealthyThreshold" : "5",
          "Interval" : "10",
          "Timeout" : "5"
        }
      }
    },

    "WebServerGroup" : {
      "Type" : "AWS::AutoScaling::AutoScalingGroup",
      "Properties" : {
        "AvailabilityZones" : { "Fn::GetAZs" : "" },
        "LaunchConfigurationName" : { "Ref" : "LaunchConfig" },
        "MinSize" : "1",
        "MaxSize" : "5",
        "DesiredCapacity" : { "Ref" : "WebServerCapacity" },
        "LoadBalancerNames" : [ { "Ref" : "ElasticLoadBalancer" } ]
      }
    },

    "LaunchConfig": {
      "Type" : "AWS::AutoScaling::LaunchConfiguration",
      "Metadata" : {
        "AWS::CloudFormation::Init" : {
          "config" : {
            "packages" : {
              "yum" : {
                "httpd"        : [],
                "php"          : [],
                "php-mysql"    : [],
                "mysql"        : []
              }
            },

            "sources" : {
              "/var/www/html" : "http://joomlacode.org/gf/download/frsrelease/15900/68956/Joomla_1.7.2-Stable-Full_Package.zip"
            },

            "files" : {
              "/tmp/create_accounts.mysql" : {
                "content" : { "Fn::Join" : ["", [
                  "INSERT INTO `jos_users` VALUES (62, 'Administrator', 'admin', 'nobody@amazon.com', MD5('", { "Ref" : "AdminPassword" }, "'), 'Super Administrator', 0, 1, '2011-01-01 00:00:00', '2011-01-01 00:00:00', '', '');\n",
                  "INSERT INTO `jos_user_usergroup_map` (`user_id`, `group_id`) VALUES (62,8);\n"
                  ]]},
                "mode"  : "000644",
                "owner" : "root",
                "group" : "root"
              }
            },

            "services" : {
              "sysvinit" : {
                "httpd"    : { "enabled" : "true", "ensureRunning" : "true" },
                "sendmail" : { "enabled" : "true", "ensureRunning" : "true" }
              }
            }
          }
        }
      },
      "Properties": {
        "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },
                          { "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] },
        "InstanceType"   : { "Ref" : "InstanceType" },
        "SecurityGroups" : [ {"Ref" : "WebServerSecurityGroup"} ],
        "KeyName"        : { "Ref" : "KeyName" },
        "UserData"       : { "Fn::Base64" : { "Fn::Join" : ["", [
          "#!/bin/bash -v\n",
          "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 Apache Web Server, PHP and Joomla!\n",
          "/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackId" }, " -r LaunchConfig ",
		  "    --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",

          "# Setup Joomla! database\n",
          "sed -e 's/#__/jos_/g' < /var/www/html/installation/sql/mysql/joomla.sql > /var/www/html/joomla.sql\n",
          "mysql ", { "Ref" : "DBName" }, " --host=", {"Fn::GetAtt" : ["DBInstance", "Endpoint.Address"]}, " --port=", {"Fn::GetAtt" : ["DBInstance", "Endpoint.Port"]}, " --user=", { "Ref" : "DBUsername" }, " --password=", { "Ref" : "DBPassword" }, "< /var/www/html/joomla.sql\n",
          "mysql ", { "Ref" : "DBName" }, " --host=", {"Fn::GetAtt" : ["DBInstance", "Endpoint.Address"]}, " --port=", {"Fn::GetAtt" : ["DBInstance", "Endpoint.Port"]}, " --user=", { "Ref" : "DBUsername" }, " --password=", { "Ref" : "DBPassword" }, "< /tmp/create_accounts.mysql\n",

          "# Fixup configuration\n",
          "sed -e \"s/\\$user = ''/\\$user = '", { "Ref" : "DBUsername" }, "'/g\"",
          "    -e \"s/\\$password = ''/\\$password = '", { "Ref" : "DBPassword" }, "'/g\"",
          "    -e \"s/\\$host = 'localhost'/\\$host = '", {"Fn::GetAtt" : ["DBInstance", "Endpoint.Address"]}, ":", {"Fn::GetAtt" : ["DBInstance", "Endpoint.Port"]}, "'/g\"",
          "    -e \"s/\\$db = ''/\\$db = '", { "Ref" : "DBName" }, "'/g\"",
          "    < /var/www/html/installation/configuration.php-dist > /var/www/html/configuration.php\n",

          "# Cleanup installation\n",
          "rm /tmp/create_accounts.mysql\n",
          "rm /var/www/html/joomla.sql\n",
          "rm -Rf /var/www/html/installation\n",

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

        ]]}}
      }
    },

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

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

    "DBInstance" : {
      "Type": "AWS::RDS::DBInstance",
      "Properties": {
        "DBName"            : { "Ref" : "DBName" },
        "Engine"            : "MySQL",
        "MultiAZ"           : { "Ref": "MultiAZDatabase" },
        "MasterUsername"    : { "Ref" : "DBUsername" },
        "DBInstanceClass"   : { "Ref" : "DBClass" },
        "DBSecurityGroups"  : [{ "Ref" : "DBSecurityGroup" }],
        "AllocatedStorage"  : { "Ref" : "DBAllocatedStorage" },
        "MasterUserPassword": { "Ref" : "DBPassword" }
      }
    },

    "DBSecurityGroup": {
      "Type": "AWS::RDS::DBSecurityGroup",
      "Properties": {
        "DBSecurityGroupIngress": { "EC2SecurityGroupName": { "Ref": "WebServerSecurityGroup"} },
        "GroupDescription"      : "Frontend Access"
      }
    },

    "WebServerSecurityGroup" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Enable HTTP access via port 80 locked down to load balancer only and SSH access",
        "SecurityGroupIngress" : [
          {"IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "SourceSecurityGroupOwnerId" : {"Fn::GetAtt" : ["ElasticLoadBalancer", "SourceSecurityGroup.OwnerAlias"]},"SourceSecurityGroupName" : {"Fn::GetAtt" : ["ElasticLoadBalancer", "SourceSecurityGroup.GroupName"]}},
          {"IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : { "Ref" : "SSHLocation"}}
        ]
      }
    }
  },

  "Outputs" : {
    "WebsiteURL" : {
      "Value" : { "Fn::Join" : ["", ["http://", { "Fn::GetAtt" : [ "ElasticLoadBalancer", "DNSName" ]}]] },
      "Description" : "Joomla! Website"
    },
    "AdminURL" : {
      "Value" : { "Fn::Join" : ["", ["http://", { "Fn::GetAtt" : [ "ElasticLoadBalancer", "DNSName" ]}, "/administrator" ]] },
      "Description" : "Joomla! Administration Website"
    }
  }
}