Multiple worker pools

content/faq/how-to-implement-multiple-worker-pools.md

@@ -0,0 +1,25 @@
+---
+title: "How can we implement multiple worker pools?"
+description: "We use `kops` manifests (YAML) to define imperative Kubernetes architectures."
+tags:
+- kops
+- Kubernetes
+- manifest
+- clusters
+---
+
+## Question
+
+How can we implement multiple worker pools within our Kubernetes clusters?
+
+## Answer
+
+We use `kops` manifests (YAML) to define imperative Kubernetes architectures.
+
+Inside the manifest (which looks like a standard Kubernetes resource) is a section for `kind: InstanceGroup` that allows for the definition of any number of node pools.
+
+An example manifest is provided [here](https://github.com/cloudposse/geodesic/blob/master/rootfs/templates/kops/default.yaml).
+
+An example of a project with the [Van Valen Research Lab at Caltech](https://github.com/vanvalenlab/kiosk/blob/master/conf/patches/gpu-nodes.yaml) demonstrates where a GPU node pool was added that is scaled down to zero by default.
+
+Using the cluster autoscaler, when a pod is scheduled with the proper labels, the node pool is automatically scaled up.