Is-there an easy way to upgrade from Amazon Linux AMI to Amazon Linux 2 AMI, or do I have to create a new instance and do again all my server setup ?
Thanks for your feedback,
There is no easy way. You have to create a new Linux 2 instance.
From: Amazon Linux
If you are currently using the Amazon Linux AMI, we recommend that you migrate to Amazon Linux 2. To migrate to Amazon Linux 2, launch an instance or create a virtual machine using the current image. Install your application on Amazon Linux 2, plus any packages required by your application. Test your application, and make any changes required for it to run on Amazon Linux 2.