將彈性IP分配給通過使用雲形成腳本自動縮放組創建的實例

Question

我有一個cloudformation腳本，它創建一個EC2，RDS與autoscaling和cloudwatch警報和DNS記錄的堆棧。

這裏的腳本

LaunchConfiguration: 
Type: "AWS::AutoScaling::LaunchConfiguration" 
Metadata: 
    "AWS::CloudFormation::Init": 
    config: 
     packages: 
     yum: 
      "php": [] 
      "php-mysql": [] 
      "mysql": [] 
      "httpd": [] 
     sources: {"/var/www/html": "https://wordpress.org/latest.tar.gz"} 
     files: 
     "/root/config.sh": 
      content: 
      "Fn::Join": 
       - "" 
       - [ 
        "#!/bin/bash -ex\n", 
        "cp wp-config-sample.php wp-config.php\n", 
        "sed -i \"s/'database_name_here'/'devwordpress'/g\" wp-config.php\n", 
        "sed -i \"s/'username_here'/'devuser'/g\" wp-config.php\n", 
        "sed -i \"s/'password_here'/'devpassword'/g\" wp-config.php\n", 
        "sed -i \"s/'localhost'/'", {"Fn::GetAtt": ["Database", "Endpoint.Address"]}, "'/g\" wp-config.php\n", 
        "echo \"define('DISALLOW_FILE_MODS', true); \" >> wp-config.php \n", 
        "echo \"define('WP_AUTO_UPDATE_CORE', false); \" >> wp-config.php \n", 
        "chmod -R 777 wp-content/ \n", 
        "curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar \n", 
        "php wp-cli.phar core install --url=\"", "wordpress.devops-tech.in", "\" --title=\"", {"Ref": "BlogTitle"}, "\" --admin_user=\"", {"Ref": "BlogAdminUsername"}, "\" --admin_password=\"", {"Ref": "BlogAdminPassword"}, "\" --admin_email=\"", {"Ref": "BlogAdminEMail"}, "\" \n", 
        "php wp-cli.phar plugin install --activate amazon-web-services \n", 
        "php wp-cli.phar plugin install --activate amazon-s3-and-cloudfront \n", 
        "CHARCOUNT=`printf \"", "wordpress", "\" | wc -c` \n", 
        "php wp-cli.phar db query \"DELETE FROM wp_options WHERE option_name = 'tantan_devwordpress_s3'; INSERT INTO wp_options (option_name, option_value, autoload) VALUES('tantan_prodwordpress_s3', 'a:15:{s:17:\\\"post_meta_version\\\";i:1;s:6:\\\"bucket\\\";s:", "$CHARCOUNT", ":\\\"", "wordpress","\\\";s:6:\\\"region\\\";s:0:\\\"\\\";s:6:\\\"domain\\\";s:9:\\\"subdomain\\\";s:7:\\\"expires\\\";s:1:\\\"0\\\";s:10:\\\"cloudfront\\\";s:0:\\\"\\\";s:13:\\\"object-prefix\\\";s:19:\\\"wp-content/uploads/\\\";s:10:\\\"copy-to-s3\\\";s:1:\\\"1\\\";s:13:\\\"serve-from-s3\\\";s:1:\\\"1\\\";s:17:\\\"remove-local-file\\\";s:1:\\\"0\\\";s:3:\\\"ssl\\\";s:7:\\\"request\\\";s:12:\\\"hidpi-images\\\";s:1:\\\"0\\\";s:17:\\\"object-versioning\\\";s:1:\\\"0\\\";s:21:\\\"use-yearmonth-folders\\\";s:1:\\\"1\\\";s:20:\\\"enable-object-prefix\\\";s:1:\\\"1\\\";}', 'yes');\" \n" 
       ] 
      mode: "000500" 
      owner: "root" 
      group: "root" 

     commands: 
     01_mv: 
      command: "mv * ../" 
      cwd: "/var/www/html/wordpress" 
     02_config: 
      command: "/root/config.sh" 
      cwd: "/var/www/html" 

     services: 
     sysvinit: 
      httpd: 
      enabled: "true" 
      ensureRunning: "true" 

Properties: 
    ImageId: {"Fn::FindInMap": ["EC2RegionMap", {"Ref": "AWS::Region"}, "AmazonLinuxAMIHVMEBSBacked64bit"]} 
    InstanceType: {"Ref": "WebServerInstanceType"} 
    SecurityGroups: [{"Ref": "WebServerSecurityGroup"}] 
    KeyName: {"Ref": "WebServerKeyName"} 
    AssociatePublicIpAddress: "true" 
    UserData: 
    "Fn::Base64": 
     "Fn::Join": 
     - "" 
     - [ 
      "#!/bin/bash -ex\n", 
      "yum update -y aws-cfn-bootstrap\n", 
      "/opt/aws/bin/cfn-init -v --stack ", {"Ref": "AWS::StackName"}, " --resource LaunchConfiguration --region ", {"Ref": "AWS::Region"}, "\n", 
      "/opt/aws/bin/cfn-signal -e $? --stack ", {"Ref": "AWS::StackName"}, " --resource AutoScalingGroup --region ", {"Ref": "AWS::Region"}, "\n" 
      ] 
    InstanceMonitoring: "true" 

AutoScalingGroup: 
Type: "AWS::AutoScaling::AutoScalingGroup" 
Properties: 
    LoadBalancerNames: [{"Ref": "LoadBalancer"}] 
    LaunchConfigurationName: {"Ref": "LaunchConfiguration"} 
    MinSize: "1" 
    MaxSize: "2" 
    DesiredCapacity: "1" 
    Cooldown: "300" 
    HealthCheckGracePeriod: "300" 
    HealthCheckType: "ELB" 
    VPCZoneIdentifier: [{"Ref": "SubnetA"}, {"Ref": "SubnetB"}] 
    Tags: 
    - PropagateAtLaunch: "true" 
     Value: "dev-instance-wordpress" 
     Key: "Name" 

現在我想的彈性IP連接到將被自動縮放創建的實例。 如何在創建堆棧時附加彈性IP？

Answer 1

你的問題有點打破了自動縮放組的設計。 ASG適用於來來去去的動態實例，而彈性IP適用於具有更長生命週期的事物。

這就是說，你應該編輯你的模板並添加準確的公共IP地址。

請參閱http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-as-launchconfig.html#cfn-as-launchconfig-blockdevicemappings