Create the following variables inside your .env file which is located at /var/www/pterodactyl

# Set your panel to use s3 for backups
APP_BACKUP_DRIVER=s3

# Info to actually use s3

AWS_DEFAULT_REGION=

AWS_ACCESS_KEY_ID=
AWS_SECRET_ACCESS_KEY=

# Name of the bucket that you created
AWS_BACKUPS_BUCKET=

# Only required if you're not using AWS
AWS_ENDPOINT=