Scaling AKS

When to use

When the cluster is over or underprovisioned and needs to be scaled.

Prerequisites

• A running dplsh launched from ./infrastructure with DPLPLAT_ENV set to the platform environment name.

References

• For general information about AKS and node-pools https://learn.microsoft.com/en-us/azure/aks/use-multiple-node-pools

Procedure

There are multiple approaches to scaling AKS. We run with the auto-scaler enabled which means that in most cases the thing you want to do is to adjust the max or minimum configuration for the autoscaler.

• Adjusting the autoscaler

Adjusting the autoscaler

Edit the infrastructure configuration for your environment. Eg for dplplat01 edit infrastructure/environments/dplplat01/infrastructure/main.tf.

Adjust the ..._count_min / ..._count_min corresponding to the node-pool you want to grow/shrink.

Then run infra:provision to have terraform effect the change.

task infra:provision