CloudFormation編～CloudFormationでVPCパート③～

投稿日 2013年11月28日
著者 aws-recipe-user
カテゴリーコンピューティング

こんにちは！ JQです。

前回は『CloudFormation編～CloudFormationでVPCパート②～』ということで、CloudFormationのStackでVPCを構築してみました。

今回は『CloudFormation編～CloudFormationでVPCパート③～』と題して、CloudFormationのStackでVPCにWEBインスタンスを構築してみたいと思います。

Templateの作成

4 インスタンス構築Templateの作成
インスタンス構築のTemplateを作成します。
下記テンプレートではhttpとphpをインストールしてphpinfoのファイルを設置するWEBサーバを起動します。

「Parameters」で指定する項目は以下になります。

InstanceType	インスタンスタイプ
WebKeyName	SSHキー
SSHLocation	SSHの許可IP（デフォルトは0.0.0.0/0）
VpcId	VPCのID
SubnetId	SubnetのID

「Mappings」はAmazonLinuxのAMIになります。

CloudFormationの「Metadata」を利用してパッケージのインストールと起動にphpinfoファイルの作成を行っております。
※「UserData」で上記のトリガーが行われます。

成功した場合には「Outputs」で次の項目が出力されます。

WebInstanceID	作成されたインスタンスのInstanceID
AZ	作成されたインスタンスのゾーン
URL	作成されたインスタンスにアクセスする為のURL

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

  "Description" : "AWS CloudFormation Template : Build to instance. AmazonLinux. ",

  "Parameters" : {
    "InstanceType" : {
      "Description" : "WebServer 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","m3.xlarge","m3.2xlarge","c1.medium","c1.xlarge","cc1.4xlarge","cc2.8xlarge","cg1.4xlarge"],
      "ConstraintDescription" : "must be a valid EC2 instance type."
    },    
    "WebKeyName" : {
      "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instances",
      "Type" : "String",
      "MinLength": "1",
      "MaxLength": "64",
      "AllowedPattern" : "[-_ a-zA-Z0-9]*",
      "ConstraintDescription" : "can contain only alphanumeric characters, spaces, dashes and underscores."
    },

    "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."
    },
   
    "VpcId" : {
      "Type" : "String",
      "Description" : "VpcId of your existing Virtual Private Cloud (VPC)"
    },

    "SubnetId" : {
      "Type" : "String",
      "Description" : "SubnetId of an existing Public facing subnet in your Virtual Private Cloud (VPC)"
    }
  },

  "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"      : { "64" : "ami-35792c5c" },
      "us-west-1"      : { "64" : "ami-687b4f2d" },
      "us-west-2"      : { "64" : "ami-d03ea1e0" },
      "eu-west-1"      : { "64" : "ami-149f7863" },
      "sa-east-1"      : { "64" : "ami-9f6ec982" },
      "ap-southeast-1" : { "64" : "ami-14f2b946" },
      "ap-southeast-2" : { "64" : "ami-a148d59b" },
      "ap-northeast-1" : { "64" : "ami-3561fe34" }
    }
  },

  "Resources" : {
                   
    "WebSecurityGroup" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "VpcId" : { "Ref" : "VpcId" },
        "GroupDescription" : "Enable SSH access via port 22",
        "SecurityGroupIngress" : [
           { "IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : "219.111.8.217/32" }, 
           { "IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0" }
           ]
      }
    },
   
    "WebHost" : {
      "Type" : "AWS::EC2::Instance",
      "Metadata": {
        "AWS::CloudFormation::Init": {
            "config": {
              "packages": {
                "yum": {
                  "httpd": [],
                  "php" : []
                }
              },
              "files" : {
                "/var/www/html/index.php" : {
                  "content" : { "Fn::Join" : ["", [ "<?php phpinfo(); ?>" ]]},
                  "mode"  : "000644",
                  "owner" : "root",
                  "group" : "root"                  
                }
              },
              "services" : {
                "sysvinit" : {  
                  "httpd" : {
                    "enabled" : "true",
                    "ensureRunning" : "true"                
                  }
                }
              }              
            }
          }
        },
        
      "Properties" : {
        "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },{ "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" },"Arch" ] } ] },
        "KeyName" : { "Ref" : "WebKeyName" },
		"NetworkInterfaces" : [{
          "AssociatePublicIpAddress" : "true",
          "GroupSet" : [{ "Ref" : "WebSecurityGroup" }],
          "SubnetId" : { "Ref" : "SubnetId" },
          "DeviceIndex"              : "0"
    	}],           
        "UserData"       : { "Fn::Base64" : { "Fn::Join" : ["", [
          "#!/bin/bash\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" : "WebHostHandle" }, "'\n",
          "  exit 1\n",
          "}\n",

          "# Install the simple web page\n",
          "/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackId" }, " -r WebHost ",
          "         --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",

          "# All done so signal success\n",
          "/opt/aws/bin/cfn-signal -e 0 -r \"WebHost setup complete\" '", { "Ref" : "WebHostHandle" }, "'\n"
        ]]}},      
        "Tags": [
          { "Key" : "Name", "Value": "WebHost" }
        ]        
      }
    },
             
    "WebHostHandle" : {
      "Type" : "AWS::CloudFormation::WaitConditionHandle"
    },
   
    "WebControllerCondition" : {
      "Type" : "AWS::CloudFormation::WaitCondition",
      "DependsOn" : "WebHost",
      "Properties" : {
        "Handle" : { "Ref" : "WebHostHandle" },
        "Timeout" : "600"
      }
    }
  },

  "Outputs" : {

    "WebInstanceID" : {
      "Description" : "Web Instance ID",
      "Value" : {"Ref": "WebHost"}
    },
    "AZ" : {
      "Description" : "Availability Zone of the newly created EC2 instance",
      "Value" : { "Fn::GetAtt" : [ "WebHost", "AvailabilityZone" ] }
    },
    "URL" : {
      "Description" : "URL of the sample website",
      "Value" : { "Fn::Join" : [ "", ["http://", { "Fn::GetAtt" : ["WebHost", "PublicIp"] }]]}
    }
    
  }
}

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{

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

"Description" : "AWS CloudFormation Template : Build to instance. AmazonLinux. ",

"Parameters" : {

"InstanceType" : {

"Description" : "WebServer 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","m3.xlarge","m3.2xlarge","c1.medium","c1.xlarge","cc1.4xlarge","cc2.8xlarge","cg1.4xlarge"],

"ConstraintDescription" : "must be a valid EC2 instance type."

"WebKeyName" : {

"Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instances",

"Type" : "String",

"MinLength": "1",

"MaxLength": "64",

"AllowedPattern" : "[-_ a-zA-Z0-9]*",

"ConstraintDescription" : "can contain only alphanumeric characters, spaces, dashes and underscores."

"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."

"VpcId" : {

"Type" : "String",

"Description" : "VpcId of your existing Virtual Private Cloud (VPC)"

"SubnetId" : {

"Type" : "String",

"Description" : "SubnetId of an existing Public facing subnet in your Virtual Private Cloud (VPC)"

}

"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" : { "64" : "ami-35792c5c" },

"us-west-1" : { "64" : "ami-687b4f2d" },

"us-west-2" : { "64" : "ami-d03ea1e0" },

"eu-west-1" : { "64" : "ami-149f7863" },

"sa-east-1" : { "64" : "ami-9f6ec982" },

"ap-southeast-1" : { "64" : "ami-14f2b946" },

"ap-southeast-2" : { "64" : "ami-a148d59b" },

"ap-northeast-1" : { "64" : "ami-3561fe34" }

}

"Resources" : {

"WebSecurityGroup" : {

"Type" : "AWS::EC2::SecurityGroup",

"Properties" : {

"VpcId" : { "Ref" : "VpcId" },

"GroupDescription" : "Enable SSH access via port 22",

"SecurityGroupIngress" : [

{ "IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : "219.111.8.217/32" },

{ "IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0" }

]

}

"WebHost" : {

"Type" : "AWS::EC2::Instance",

"Metadata": {

"AWS::CloudFormation::Init": {

"config": {

"packages": {

"yum": {

"httpd": [],

"php" : []

}

"files" : {

"/var/www/html/index.php" : {

"content" : { "Fn::Join" : ["", [ "<?php phpinfo(); ?>" ]]},

"mode" : "000644",

"owner" : "root",

"group" : "root"

}

"services" : {

"sysvinit" : {

"httpd" : {

"enabled" : "true",

"ensureRunning" : "true"

}

"Properties" : {

"ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },{ "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" },"Arch" ] } ] },

"KeyName" : { "Ref" : "WebKeyName" },

"NetworkInterfaces" : [{

"AssociatePublicIpAddress" : "true",

"GroupSet" : [{ "Ref" : "WebSecurityGroup" }],

"SubnetId" : { "Ref" : "SubnetId" },

"DeviceIndex" : "0"

}],

"UserData" : { "Fn::Base64" : { "Fn::Join" : ["", [

"#!/bin/bash\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" : "WebHostHandle" }, "'\n",

" exit 1\n",

"}\n",

"# Install the simple web page\n",

"/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackId" }, " -r WebHost ",

" --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",

"# All done so signal success\n",

"/opt/aws/bin/cfn-signal -e 0 -r \"WebHost setup complete\" '", { "Ref" : "WebHostHandle" }, "'\n"

]]}},

"Tags": [

{ "Key" : "Name", "Value": "WebHost" }

]

}

"WebHostHandle" : {

"Type" : "AWS::CloudFormation::WaitConditionHandle"

"WebControllerCondition" : {

"Type" : "AWS::CloudFormation::WaitCondition",

"DependsOn" : "WebHost",

"Properties" : {

"Handle" : { "Ref" : "WebHostHandle" },

"Timeout" : "600"

}

"Outputs" : {

"WebInstanceID" : {

"Description" : "Web Instance ID",

"Value" : {"Ref": "WebHost"}

"AZ" : {

"Description" : "Availability Zone of the newly created EC2 instance",

"Value" : { "Fn::GetAtt" : [ "WebHost", "AvailabilityZone" ] }

"URL" : {

"Description" : "URL of the sample website",

"Value" : { "Fn::Join" : [ "", ["http://", { "Fn::GetAtt" : ["WebHost", "PublicIp"] }]]}

}

いかがでしたでしょうか？

次回は『CloudFormation編～CloudFormationでVPCパート④～』ということで、実際に今回のテンプレートを試してみたいと思います。
お楽しみに！

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記事一覧

CloudFormation編～CloudFormationでVPCパート③～

Templateの作成

この記事を書いた人

aws-recipe-user

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