Amazon EC2 custom AMI not running bootstrap user-data

0 votes

I have encountered an issue when creating custom AMIs (images) on EC2 instances. If I start up a Windows default 2012 server instance with a custom bootstrap/user-data script such as;

<powershell>
PowerShell "(New-Object System.Net.WebClient).DownloadFile('http://download.microsoft.com/download/3/2/2/3224B87F-CFA0-4E70-BDA3-3DE650EFEBA5/vcredist_x64.exe','C:\vcredist_x64.exe')"
</powershell>

It will work as intended and go to the URL and download the file, and store it on the C: Drive.

But if I setup a Windows Server Instance, then create a image from it, and store it as a Custom AMI, then deploy it with the exact same custom user-data script it will not work. But if I go to the instance url (http://169.254.169.254/latest/user-data) it will show the script has imported successfully but has not been executed.

After checking the error logs I have noticed this on a regular occasion:

Failed to fetch instance metadata http://169.254.169.254/latest/user-data with exception The remote server returned an error: (404) Not Found.
Jul 13, 2018 in AWS by Hammer
• 360 points
3,739 views

1 answer to this question.

0 votes

At the end of initial bootstrap (UserData) script, just append persist tag as shown below. It will work!

<powershell>
    insert script here
</powershell>
<persist>true</persist>
answered Jul 13, 2018 by Cloud gunner
• 4,670 points

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