EKS 1.23+ Clusters Need EBS CSI Driver

Summary

As part of the troubleshooting in hpa downscaling webservice causing 502 errors w... (#4405 - closed) - using the EKS bootstrap script to stand up a new cluster doesn't work out of the box due to Volume binding errors for the persistent volumes for postgres, gitaly, and minio.

It appears that as part of a planned migration of in-tree drivers to the Container Storage Interface ( blog post ) that as of 1.23+ - the EBS CSI driver needs to be installed manually (See also AWS FAQs )

There's an in-progress MR here: !3050 (merged) to add those steps to the docs - but we may be able to add this to the bootstrap script.