Creating custom AMI

Custom AMI enables user to use their own AMI as a compute node or storage node in the cluster deployment.

Ensure that the custom AMI runs an operating system that is supported for IBM Spectrum Scale on AWS BYOL 1.4.0. For more information, see IBM Spectrum Scale instance types and operating systems.

Note: During custom AMI creation process, the root volume must be specified to be 100 GB or lesser to ensure compatibility with IBM Spectrum Scale on AWS 1.4.0 deployment.

Run the precheck-customami script on the EC2 instance that is used as the source instance for the custom AMI. This script ensures that all IBM Spectrum Scale prerequisites are met. You can download the precheck-customami script from ibm-spectrum-scale-cloud-install. For more information, see Creating an instance store-backed Linux® AMI.

Note:

After the creation of the custom AMI, you must pass the custom AMI ID as either a Compute or a Storage AMI while you deploy the CloudFormation stack.