> deploy elastic and some other helm charts as quickly as possible

Bad culture alert! No one needs Elastic "as quickly as possible" unless their business, or the business they work for, is being very poorly run.

I would also argue that you might have got it running quickly, but how are you patching it? Maintaining it? Securing it? Backing it up? Have you got a full D/R plan in place? Can you bring it back to life if I delete everything within 3-6 hours? Doubt it.

> maintaining nodes with some clunky shell scripts.

Puppet Bolt, Ansible, Chef, ...

There are so many tools that are easy to understand that solve this issue.