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Score: 0.8170309662818909; Reported for: String similarity Open both answers

Possible Plagiarism

Reposted on 2018-09-01
by Mahtab Alam

Original Post

Original - Posted on 2018-08-17
by Mahtab Alam



            
Present in both answers; Present only in the new answer; Present only in the old answer;

So there were two mistakes one was `specifying the wrong resource in /etc/cfn/hooks.d/cfn-auto-reloader.conf's action` and also `missing the mode,owner and group properties for /etc/cfn/hooks.d/cfn-auto-reloader.conf`
Here is the working cf template
{ "AWSTemplateFormatVersion" : "2010-09-09", "Description" : "AWS CloudFormation Sample Template EC2InstanceWithSecurityGroupSample: Create an Amazon EC2 instance running the Amazon Linux AMI. The AMI is chosen based on the region in which the stack is run. This example creates an EC2 security group for the instance to give you SSH access. **WARNING** 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" : { "KeyName": { "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instance", "Type": "AWS::EC2::KeyPair::KeyName", "ConstraintDescription" : "Must be the name of an existing EC2 KeyPair." }, "InstanceType" : { "Description" : "WebServer EC2 instance type", "Type" : "String", "Default" : "t2.micro", "AllowedValues" : [ "t1.micro", "t2.nano", "t2.micro", "t2.small", "t2.medium", "t2.large", "m1.small", "m1.medium", "m1.large", "m1.xlarge", "m2.xlarge", "m2.2xlarge", "m2.4xlarge", "m3.medium", "m3.large", "m3.xlarge", "m3.2xlarge", "m4.large", "m4.xlarge", "m4.2xlarge", "m4.4xlarge", "m4.10xlarge", "c1.medium", "c1.xlarge", "c3.large", "c3.xlarge", "c3.2xlarge", "c3.4xlarge", "c3.8xlarge", "c4.large", "c4.xlarge", "c4.2xlarge", "c4.4xlarge", "c4.8xlarge", "g2.2xlarge", "g2.8xlarge", "r3.large", "r3.xlarge", "r3.2xlarge", "r3.4xlarge", "r3.8xlarge", "i2.xlarge", "i2.2xlarge", "i2.4xlarge", "i2.8xlarge", "d2.xlarge", "d2.2xlarge", "d2.4xlarge", "d2.8xlarge"] , "ConstraintDescription" : "Must be a valid EC2 instance type." }, "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" : "PV64" }, "t2.nano" : { "Arch" : "HVM64" }, "t2.micro" : { "Arch" : "HVM64" }, "t2.small" : { "Arch" : "HVM64" }, "t2.medium" : { "Arch" : "HVM64" }, "t2.large" : { "Arch" : "HVM64" }, "m1.small" : { "Arch" : "PV64" }, "m1.medium" : { "Arch" : "PV64" }, "m1.large" : { "Arch" : "PV64" }, "m1.xlarge" : { "Arch" : "PV64" }, "m2.xlarge" : { "Arch" : "PV64" }, "m2.2xlarge" : { "Arch" : "PV64" }, "m2.4xlarge" : { "Arch" : "PV64" }, "m3.medium" : { "Arch" : "HVM64" }, "m3.large" : { "Arch" : "HVM64" }, "m3.xlarge" : { "Arch" : "HVM64" }, "m3.2xlarge" : { "Arch" : "HVM64" }, "m4.large" : { "Arch" : "HVM64" }, "m4.xlarge" : { "Arch" : "HVM64" }, "m4.2xlarge" : { "Arch" : "HVM64" }, "m4.4xlarge" : { "Arch" : "HVM64" }, "m4.10xlarge" : { "Arch" : "HVM64" }, "c1.medium" : { "Arch" : "PV64" }, "c1.xlarge" : { "Arch" : "PV64" }, "c3.large" : { "Arch" : "HVM64" }, "c3.xlarge" : { "Arch" : "HVM64" }, "c3.2xlarge" : { "Arch" : "HVM64" }, "c3.4xlarge" : { "Arch" : "HVM64" }, "c3.8xlarge" : { "Arch" : "HVM64" }, "c4.large" : { "Arch" : "HVM64" }, "c4.xlarge" : { "Arch" : "HVM64" }, "c4.2xlarge" : { "Arch" : "HVM64" }, "c4.4xlarge" : { "Arch" : "HVM64" }, "c4.8xlarge" : { "Arch" : "HVM64" }, "g2.2xlarge" : { "Arch" : "HVMG2" }, "g2.8xlarge" : { "Arch" : "HVMG2" }, "r3.large" : { "Arch" : "HVM64" }, "r3.xlarge" : { "Arch" : "HVM64" }, "r3.2xlarge" : { "Arch" : "HVM64" }, "r3.4xlarge" : { "Arch" : "HVM64" }, "r3.8xlarge" : { "Arch" : "HVM64" }, "i2.xlarge" : { "Arch" : "HVM64" }, "i2.2xlarge" : { "Arch" : "HVM64" }, "i2.4xlarge" : { "Arch" : "HVM64" }, "i2.8xlarge" : { "Arch" : "HVM64" }, "d2.xlarge" : { "Arch" : "HVM64" }, "d2.2xlarge" : { "Arch" : "HVM64" }, "d2.4xlarge" : { "Arch" : "HVM64" }, "d2.8xlarge" : { "Arch" : "HVM64" } } , "AWSRegionArch2AMI" : { "us-east-1" : {"PV64" : "ami-2a69aa47", "HVM64" : "ami-97785bed", "HVMG2" : "ami-0a6e3770"}, "us-west-2" : {"PV64" : "ami-7f77b31f", "HVM64" : "ami-f2d3638a", "HVMG2" : "ami-ee15a196"}, "us-west-1" : {"PV64" : "ami-a2490dc2", "HVM64" : "ami-824c4ee2", "HVMG2" : "ami-0da4a46d"}, "eu-west-1" : {"PV64" : "ami-4cdd453f", "HVM64" : "ami-d834aba1", "HVMG2" : "ami-af8013d6"}, "eu-west-2" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-403e2524", "HVMG2" : "NOT_SUPPORTED"}, "eu-west-3" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-8ee056f3", "HVMG2" : "NOT_SUPPORTED"}, "eu-central-1" : {"PV64" : "ami-6527cf0a", "HVM64" : "ami-5652ce39", "HVMG2" : "ami-1d58ca72"}, "ap-northeast-1" : {"PV64" : "ami-3e42b65f", "HVM64" : "ami-ceafcba8", "HVMG2" : "ami-edfd658b"}, "ap-northeast-2" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-863090e8", "HVMG2" : "NOT_SUPPORTED"}, "ap-northeast-3" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-83444afe", "HVMG2" : "NOT_SUPPORTED"}, "ap-southeast-1" : {"PV64" : "ami-df9e4cbc", "HVM64" : "ami-68097514", "HVMG2" : "ami-c06013bc"}, "ap-southeast-2" : {"PV64" : "ami-63351d00", "HVM64" : "ami-942dd1f6", "HVMG2" : "ami-85ef12e7"}, "ap-south-1" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-531a4c3c", "HVMG2" : "ami-411e492e"}, "us-east-2" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-f63b1193", "HVMG2" : "NOT_SUPPORTED"}, "ca-central-1" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-a954d1cd", "HVMG2" : "NOT_SUPPORTED"}, "sa-east-1" : {"PV64" : "ami-1ad34676", "HVM64" : "ami-84175ae8", "HVMG2" : "NOT_SUPPORTED"}, "cn-north-1" : {"PV64" : "ami-77559f1a", "HVM64" : "ami-cb19c4a6", "HVMG2" : "NOT_SUPPORTED"}, "cn-northwest-1" : {"PV64" : "ami-80707be2", "HVM64" : "ami-3e60745c", "HVMG2" : "NOT_SUPPORTED"} } }, "Resources" : { "EC2Instance" : { "Type" : "AWS::EC2::Instance", "Metadata" : { "AWS::CloudFormation::Init" : { "configSets" : { "InstallAndRun" : [ "config1", "config2" ] }, "config1" : { "packages" : { "yum" : { "httpd" : [] } }, "files" : { "/var/www/html/index.html" : { "content" : { "Fn::Join" : ["", [ "<h1 align='center'>Heyyo cfn-up, oh sorry cfn-hup! :)</h1>" ]]}, "mode" : "000644", "owner" : "apache", "group" : "apache" }, "/etc/cfn/cfn-hup.conf" : { "content" : { "Fn::Join" : ["", [ "[main]\n", "stack=", { "Ref" : "AWS::StackId" }, "\n", "region=", { "Ref" : "AWS::Region" }, "\n", "interval=1" ]]}, "mode" : "000400", "owner" : "root", "group" : "root" }, "/etc/cfn/hooks.d/cfn-auto-reloader.conf" : { "content": { "Fn::Join" : ["", [ "[cfn-auto-reloader-hook]\n", "triggers=post.update\n", "path=Resources.EC2Instance.Metadata.AWS::CloudFormation::Init\n", "action=/opt/aws/bin/cfn-init --stack ", { "Ref" : "AWS::StackName" }, " --resource EC2Instance ", " --configsets InstallAndRun ", " --region ", { "Ref" : "AWS::Region" }, "\n", "runas=root\n" ]]}, "mode" : "000400", "owner" : "root", "group" : "root" } } }, "config2" : { "services" : { "sysvinit" : { "httpd" : { "enabled" : "true", "ensureRunning" : "true", "packages" : { "yum" : ["httpd"] }, "cfn-hup" : { "enabled" : "true", "ensureRunning" : "true", "files" : ["/etc/cfn/cfn-hup.conf", "/etc/cfn/hooks.d/cfn-auto-reloader.conf"]} } } } } } }, "Properties" : { "InstanceType" : { "Ref" : "InstanceType" }, "SecurityGroups" : [ { "Ref" : "InstanceSecurityGroup" } ], "KeyName" : { "Ref" : "KeyName" }, "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" }, { "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] }, "UserData" : { "Fn::Base64" : { "Fn::Join" : ["", [ "#!/bin/bash -xe\n", "yum update -y aws-cfn-bootstrap\n", "# Install the files and packages from the metadata\n", "/opt/aws/bin/cfn-init -v ", " --stack ", { "Ref" : "AWS::StackName" }, " --resource EC2Instance ", " --configsets InstallAndRun ", " --region ", { "Ref" : "AWS::Region" }, "\n", "# Start up the cfn-hup daemon to listen for changes to the EC2 metadata\n", "/opt/aws/bin/cfn-hup || error_exit 'Failed to start cfn-hup'\n", "# Signal the status from cfn-init\n", "/opt/aws/bin/cfn-signal -e $? ", " --stack ", { "Ref" : "AWS::StackName" }, " --resource EC2Instance ", " --region ", { "Ref" : "AWS::Region" }, "\n" ]]} } }, "CreationPolicy": { "ResourceSignal": { "Count": "1", "Timeout": "PT5M" } } }, "InstanceSecurityGroup" : { "Type" : "AWS::EC2::SecurityGroup", "Properties" : { "GroupDescription" : "Enable SSH access via port 22", "SecurityGroupIngress" : [ { "IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : { "Ref" : "SSHLocation"} }, { "IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : { "Ref" : "SSHLocation"} } ] } } }, "Outputs" : { "InstanceId" : { "Description" : "InstanceId of the newly created EC2 instance", "Value" : { "Ref" : "EC2Instance" } }, "AZ" : { "Description" : "Availability Zone of the newly created EC2 instance", "Value" : { "Fn::GetAtt" : [ "EC2Instance", "AvailabilityZone" ] } }, "PublicDNS" : { "Description" : "Public DNSName of the newly created EC2 instance", "Value" : { "Fn::GetAtt" : [ "EC2Instance", "PublicDnsName" ] } }, "PublicIP" : { "Description" : "Public IP address of the newly created EC2 instance", "Value" : { "Fn::GetAtt" : [ "EC2Instance", "PublicIp" ] } } } }
I was missing the CreationPolicy with my cfn-signal, since I was not using CreationPolicy to wait for Bootstrapping on EC2 Instance to complete and Cloudformation stack was already reached to CREATE_COMPLETE state, signaling success after stack was already reached to CREATE_COMPLETE was giving error. I attached the CreationPolicy on EC2 resource so that Cloudformation waits for 1 signal within 5 minutes before proceeding with stack. This solved the problem. Below is the updated stack with CreationPolicy
{ "AWSTemplateFormatVersion" : "2010-09-09", "Description" : "AWS CloudFormation Sample Template EC2InstanceWithSecurityGroupSample: Create an Amazon EC2 instance running the Amazon Linux AMI. The AMI is chosen based on the region in which the stack is run. This example creates an EC2 security group for the instance to give you SSH access. **WARNING** 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" : { "KeyName": { "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instance", "Type": "AWS::EC2::KeyPair::KeyName", "ConstraintDescription" : "Must be the name of an existing EC2 KeyPair." }, "InstanceType" : { "Description" : "WebServer EC2 instance type", "Type" : "String", "Default" : "t2.micro", "AllowedValues" : [ "t1.micro", "t2.nano", "t2.micro", "t2.small", "t2.medium", "t2.large", "m1.small", "m1.medium", "m1.large", "m1.xlarge", "m2.xlarge", "m2.2xlarge", "m2.4xlarge", "m3.medium", "m3.large", "m3.xlarge", "m3.2xlarge", "m4.large", "m4.xlarge", "m4.2xlarge", "m4.4xlarge", "m4.10xlarge", "c1.medium", "c1.xlarge", "c3.large", "c3.xlarge", "c3.2xlarge", "c3.4xlarge", "c3.8xlarge", "c4.large", "c4.xlarge", "c4.2xlarge", "c4.4xlarge", "c4.8xlarge", "g2.2xlarge", "g2.8xlarge", "r3.large", "r3.xlarge", "r3.2xlarge", "r3.4xlarge", "r3.8xlarge", "i2.xlarge", "i2.2xlarge", "i2.4xlarge", "i2.8xlarge", "d2.xlarge", "d2.2xlarge", "d2.4xlarge", "d2.8xlarge"] , "ConstraintDescription" : "Must be a valid EC2 instance type." }, "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" : "PV64" }, "t2.nano" : { "Arch" : "HVM64" }, "t2.micro" : { "Arch" : "HVM64" }, "t2.small" : { "Arch" : "HVM64" }, "t2.medium" : { "Arch" : "HVM64" }, "t2.large" : { "Arch" : "HVM64" }, "m1.small" : { "Arch" : "PV64" }, "m1.medium" : { "Arch" : "PV64" }, "m1.large" : { "Arch" : "PV64" }, "m1.xlarge" : { "Arch" : "PV64" }, "m2.xlarge" : { "Arch" : "PV64" }, "m2.2xlarge" : { "Arch" : "PV64" }, "m2.4xlarge" : { "Arch" : "PV64" }, "m3.medium" : { "Arch" : "HVM64" }, "m3.large" : { "Arch" : "HVM64" }, "m3.xlarge" : { "Arch" : "HVM64" }, "m3.2xlarge" : { "Arch" : "HVM64" }, "m4.large" : { "Arch" : "HVM64" }, "m4.xlarge" : { "Arch" : "HVM64" }, "m4.2xlarge" : { "Arch" : "HVM64" }, "m4.4xlarge" : { "Arch" : "HVM64" }, "m4.10xlarge" : { "Arch" : "HVM64" }, "c1.medium" : { "Arch" : "PV64" }, "c1.xlarge" : { "Arch" : "PV64" }, "c3.large" : { "Arch" : "HVM64" }, "c3.xlarge" : { "Arch" : "HVM64" }, "c3.2xlarge" : { "Arch" : "HVM64" }, "c3.4xlarge" : { "Arch" : "HVM64" }, "c3.8xlarge" : { "Arch" : "HVM64" }, "c4.large" : { "Arch" : "HVM64" }, "c4.xlarge" : { "Arch" : "HVM64" }, "c4.2xlarge" : { "Arch" : "HVM64" }, "c4.4xlarge" : { "Arch" : "HVM64" }, "c4.8xlarge" : { "Arch" : "HVM64" }, "g2.2xlarge" : { "Arch" : "HVMG2" }, "g2.8xlarge" : { "Arch" : "HVMG2" }, "r3.large" : { "Arch" : "HVM64" }, "r3.xlarge" : { "Arch" : "HVM64" }, "r3.2xlarge" : { "Arch" : "HVM64" }, "r3.4xlarge" : { "Arch" : "HVM64" }, "r3.8xlarge" : { "Arch" : "HVM64" }, "i2.xlarge" : { "Arch" : "HVM64" }, "i2.2xlarge" : { "Arch" : "HVM64" }, "i2.4xlarge" : { "Arch" : "HVM64" }, "i2.8xlarge" : { "Arch" : "HVM64" }, "d2.xlarge" : { "Arch" : "HVM64" }, "d2.2xlarge" : { "Arch" : "HVM64" }, "d2.4xlarge" : { "Arch" : "HVM64" }, "d2.8xlarge" : { "Arch" : "HVM64" } } , "AWSRegionArch2AMI" : { "us-east-1" : {"PV64" : "ami-2a69aa47", "HVM64" : "ami-97785bed", "HVMG2" : "ami-0a6e3770"}, "us-west-2" : {"PV64" : "ami-7f77b31f", "HVM64" : "ami-f2d3638a", "HVMG2" : "ami-ee15a196"}, "us-west-1" : {"PV64" : "ami-a2490dc2", "HVM64" : "ami-824c4ee2", "HVMG2" : "ami-0da4a46d"}, "eu-west-1" : {"PV64" : "ami-4cdd453f", "HVM64" : "ami-d834aba1", "HVMG2" : "ami-af8013d6"}, "eu-west-2" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-403e2524", "HVMG2" : "NOT_SUPPORTED"}, "eu-west-3" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-8ee056f3", "HVMG2" : "NOT_SUPPORTED"}, "eu-central-1" : {"PV64" : "ami-6527cf0a", "HVM64" : "ami-5652ce39", "HVMG2" : "ami-1d58ca72"}, "ap-northeast-1" : {"PV64" : "ami-3e42b65f", "HVM64" : "ami-ceafcba8", "HVMG2" : "ami-edfd658b"}, "ap-northeast-2" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-863090e8", "HVMG2" : "NOT_SUPPORTED"}, "ap-northeast-3" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-83444afe", "HVMG2" : "NOT_SUPPORTED"}, "ap-southeast-1" : {"PV64" : "ami-df9e4cbc", "HVM64" : "ami-68097514", "HVMG2" : "ami-c06013bc"}, "ap-southeast-2" : {"PV64" : "ami-63351d00", "HVM64" : "ami-942dd1f6", "HVMG2" : "ami-85ef12e7"}, "ap-south-1" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-531a4c3c", "HVMG2" : "ami-411e492e"}, "us-east-2" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-f63b1193", "HVMG2" : "NOT_SUPPORTED"}, "ca-central-1" : {"PV64" : "NOT_SUPPORTED", "HVM64" : "ami-a954d1cd", "HVMG2" : "NOT_SUPPORTED"}, "sa-east-1" : {"PV64" : "ami-1ad34676", "HVM64" : "ami-84175ae8", "HVMG2" : "NOT_SUPPORTED"}, "cn-north-1" : {"PV64" : "ami-77559f1a", "HVM64" : "ami-cb19c4a6", "HVMG2" : "NOT_SUPPORTED"}, "cn-northwest-1" : {"PV64" : "ami-80707be2", "HVM64" : "ami-3e60745c", "HVMG2" : "NOT_SUPPORTED"} } }, "Resources" : { "EC2Instance" : { "Type" : "AWS::EC2::Instance", "Metadata" : { "AWS::CloudFormation::Init" : { "configSets" : { "InstallAndRun" : [ "config1", "config2" ] }, "config1" : { "packages" : { "yum" : { "httpd" : [] } }, "files" : { "/var/www/html/index.html" : { "mode" : "000644", "owner" : "apache", "group" : "apache", "source" : "https://s3.amazonaws.com/pcr-docs/index.html" } } }, "config2" : { "services" : { "sysvinit" : { "httpd" : { "enabled" : "true", "ensureRunning" : "true", "packages" : { "yum" : ["httpd"] } } } } } } }, "Properties" : { "InstanceType" : { "Ref" : "InstanceType" }, "SecurityGroups" : [ { "Ref" : "InstanceSecurityGroup" } ], "KeyName" : { "Ref" : "KeyName" }, "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" }, { "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] }, "UserData" : { "Fn::Base64" : { "Fn::Join" : ["", [ "#!/bin/bash -xe\n", "yum update -y aws-cfn-bootstrap\n", "# Install the files and packages from the metadata\n", "/opt/aws/bin/cfn-init -v ", " --stack ", { "Ref" : "AWS::StackName" }, " --resource EC2Instance ", " --configsets InstallAndRun ", " --region ", { "Ref" : "AWS::Region" }, "\n", "# Signal the status from cfn-init\n", "/opt/aws/bin/cfn-signal -e $? ", " --stack ", { "Ref" : "AWS::StackName" }, " --resource EC2Instance ", " --region ", { "Ref" : "AWS::Region" }, "\n" ]]} } }, "CreationPolicy": { "ResourceSignal": { "Count": "1", "Timeout": "PT5M" } } }, "InstanceSecurityGroup" : { "Type" : "AWS::EC2::SecurityGroup", "Properties" : { "GroupDescription" : "Enable SSH access via port 22", "SecurityGroupIngress" : [ { "IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : { "Ref" : "SSHLocation"} }, { "IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : { "Ref" : "SSHLocation"} } ] } } }, "Outputs" : { "InstanceId" : { "Description" : "InstanceId of the newly created EC2 instance", "Value" : { "Ref" : "EC2Instance" } }, "AZ" : { "Description" : "Availability Zone of the newly created EC2 instance", "Value" : { "Fn::GetAtt" : [ "EC2Instance", "AvailabilityZone" ] } }, "PublicDNS" : { "Description" : "Public DNSName of the newly created EC2 instance", "Value" : { "Fn::GetAtt" : [ "EC2Instance", "PublicDnsName" ] } }, "PublicIP" : { "Description" : "Public IP address of the newly created EC2 instance", "Value" : { "Fn::GetAtt" : [ "EC2Instance", "PublicIp" ] } } } }

        
Present in both answers; Present only in the new answer; Present only in the old answer;