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#Set my hostname based on my internal IP address
$instanceName = (((Invoke-WebRequest -UseBasicParsing -Uri http://169.254.169.254/latest/meta-data/hostname).Content).split(".")[0]).replace("ip-172-31","TCG")

#Change the hostname in the unattend.xml file
$filePath = "C:\Windows\Panther\Unattend.xml"
$AnswerFile = [xml](Get-Content -Path $filePath)
$ns = New-Object System.Xml.XmlNamespaceManager($answerFile.NameTable)
$ns.AddNamespace("ns", $AnswerFile.DocumentElement.NamespaceURI)
$ComputerName = $AnswerFile.SelectSingleNode('/ns:unattend/ns:settings[@pass="specialize"]/ns:component[@name="Microsoft-Windows-Shell-Setup"]/ns:ComputerName', $ns)
$ComputerName.InnerText = $InstanceName

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{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "",
  "Parameters": {
  },
  "Resources": {
    "RDSDBI3N4HT": {
      "Type": "AWS::RDS::DBInstance",
      "Properties": {
        "AllocatedStorage": "200",

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# Finally, perform sysprep.
# Start sysprep but quit instead of shutdown
Start-Process -FilePath $sysprepPath -ArgumentList ("/oobe /quit /generalize `"/unattend:{0}`"" -f $answerFilePath) -Wait -NoNewWindow

# Replace windeploy.exe with the custom PowerShell startup script
Set-ItemProperty -Path HKLM:\System\setup -Name CmdLine -Value "powershell.exe -command c:\Scripts\startup.ps1"

# Delete the existing route to query instance metadata
route delete 169.254.169.254

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"EC2" : {
  "Type": "AWS::EC2::Instance",
  "Metadata": {
    "AWS::CloudFormation::Init": {
      "configSets": {
        "config": [
          "monitoring",
          "setup",
          "rename",
          "install",

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"Flows": {
  "Flows": [
    "(ApplicationEventLog,SystemEventLog,DSCLog),CloudWatchEventLogs",
    "EC2ConfigLog,EC2ConfigLogs",
    "cfninitLog,cfninitLogs"
  ]
}

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{
  "Id": "CloudWatchEventLogs",
  "FullName": "AWS.EC2.Windows.CloudWatch.CloudWatchLogsOutput,AWS.EC2.Windows.CloudWatch",
  "Parameters": {
    "AccessKey": "",
    "SecretKey": "",
    "Region": "ap-southeast-2",
    "LogGroup": "Event-Log-Group",
    "LogStream": "{instance_id}"
  }

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{
  "Id": "cfninitLog",
  "FullName": "AWS.EC2.Windows.CloudWatch.CustomLog.CustomLogInputComponent,AWS.EC2.Windows.CloudWatch",
  "Parameters": {
    "LogDirectoryPath": "C:\\cfn\\log",
    "TimestampFormat": "yyyy-MM-dd HH:mm:ss,fff",
    "Encoding": "UTF-8",
    "Filter": "cfn-init.log",
    "CultureName": "en-US",
    "TimeZoneKind": "Local"

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{
  "Id": "ApplicationEventLog",
  "FullName": "AWS.EC2.Windows.CloudWatch.EventLog.EventLogInputComponent,AWS.EC2.Windows.CloudWatch",
  "Parameters": {
    "LogName": "Application",
    "Levels": "7"
  }
}, 
{
  "Id": "SystemEventLog",

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{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "logs:CreateLogGroup",
        "logs:CreateLogStream",
        "logs:DescribeLogGroups",
        "logs:DescribeLogStreams",

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{
  "EngineConfiguration": {
    "PollInterval": "00:00:15",
    "Components": [
      {
        "Id": "ApplicationEventLog",
        "FullName": "AWS.EC2.Windows.CloudWatch.EventLog.EventLogInputComponent,AWS.EC2.Windows.CloudWatch",
        "Parameters": {
          "LogName": "Application",
          "Levels": "7"