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

  "Description" : "AWS CloudFormation Sample Template: Launches OpsWorks stack, layer, instances and associated resources to run a PHP application. ** This template creates one or more Amazon EC2 instances. You will be billed for the AWS resources used if you create a stack from this template.",

  "Resources": {

    "myStack": {
      "Type": "AWS::OpsWorks::Stack",
      "Properties": {
        "Name": {
          "Ref": "AWS::StackName"
        },
        "ServiceRoleArn": {
          "Fn::GetAtt": [ "OpsWorksServiceRole", "Arn"]            
        },
        "DefaultInstanceProfileArn": {
          "Fn::GetAtt": [ "OpsWorksInstanceProfile", "Arn"]
        }
      }
    },

    "myLayer": {
      "Type": "AWS::OpsWorks::Layer",
      "DependsOn": "myApp",
      "Properties": {
        "StackId": {
          "Ref": "myStack"
        },
        "Name": "MyPHPApp",
        "Type": "php-app",
        "Shortname": "php-app",
        "EnableAutoHealing": "true",
        "AutoAssignElasticIps": "false",
        "AutoAssignPublicIps": "true"
      }
    },

    "myInstance1": {
      "Type": "AWS::OpsWorks::Instance",
      "Properties": {
        "StackId": {
          "Ref": "myStack"
        },
        "LayerIds": [
          {
            "Ref": "myLayer"
          }
        ],
        "InstanceType": "m1.small"
      }
    },

    "myInstance2": {
      "Type": "AWS::OpsWorks::Instance",
      "Properties": {
        "StackId": {
          "Ref": "myStack"
        },
        "LayerIds": [
          {
            "Ref": "myLayer"
          }
        ],
        "InstanceType": "m1.small"
      }
    },

    "myApp": {
      "Type": "AWS::OpsWorks::App",
      "Properties": {
        "StackId": {
          "Ref": "myStack"
        },
        "Name": "MyPHPApp",
        "Type": "php",
        "AppSource": {
          "Type": "git",
          "Url": "git://github.com/amazonwebservices/opsworks-demo-php-simple-app.git",
          "Revision": "version1"
        },
        "Attributes": {
          "DocumentRoot": " "
        }
      }
    },

    "OpsWorksServiceRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Statement": [
            {
              "Effect": "Allow",
              "Principal": {
                "Service": [
                  "opsworks.amazonaws.com"
                ]
              },
              "Action": [
                "sts:AssumeRole"
              ]
            }
          ]
        },
        "Path": "/",
        "Policies": [
          {
            "PolicyName": "opsworks-service",
            "PolicyDocument": {
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": [
                    "ec2:*",
                    "iam:PassRole",
                    "cloudwatch:GetMetricStatistics",
                    "elasticloadbalancing:*"
                  ],
                  "Resource": "*"
                }
              ]
            }
          }
        ]
      }
    },

    "OpsWorksInstanceRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Statement": [
            {
              "Effect": "Allow",
              "Principal": {
                "Service": [
                  "ec2.amazonaws.com"
                ]
              },
              "Action": [
                "sts:AssumeRole"
              ]
            }
          ]
        },
        "Path": "/"
      }
    },

    "OpsWorksInstanceProfile": {
      "Type": "AWS::IAM::InstanceProfile",
      "Properties": {
        "Path": "/",
        "Roles": [
          {
            "Ref": "OpsWorksInstanceRole"
          }
        ]
      }
    }
  },

  "Outputs" : {
    "StackId" : {
      "Value" : { "Ref" : "myStack" }
    },

    "AppId" : {
      "Value" : { "Ref" : "myApp" }
    }
  }
}