Should you use small or large instances in a Kubernetes cluster? It depends. You should consider a few factors when selecting an instance type:

• What kind of workloads you deploy (i.e. memory and CPU requirements).
• The blast radius you can tolerate.
• How you design your HA strategy.
• How many resources are available to the pods.

This calculator helps you select what’s right from over 700 instances from the major cloud providers.