feat(cluster-autoscaler): add cluster autoscaler for aws

Note for when I'm back. This is the working autoscaler stuff, but the
permissions come from the node. It doesn't have the correct IAM permissions
for this so we need to figure out how to add that. I don't really want
to do that in the KF installation, but ideally via a Terraform job which
we can run in here. Annoyingly, I've lost access to AWS so I can't check
my hypothesis out until I get that back.

cluster-autoscaler-aws/cluster-autoscaler-aws.yaml

@@ -0,0 +1,23 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: <CLUSTER_NAME>-cluster-autoscaler-aws-components
+  namespace: argocd
+  annotations:
+    argocd.argoproj.io/sync-wave: '100'
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  source:
+    repoURL: <GITOPS_REPO_URL>
+    path: <REGISTRY_PATH>/components/cluster-autoscaler-aws
+    targetRevision: HEAD
+  destination:
+    name: in-cluster
+    namespace: kube-system
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true

cluster-autoscaler-aws/components/cluster-autoscaler-aws/application.yaml

@@ -0,0 +1,28 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: <CLUSTER_NAME>-cluster-autoscaler-aws
+  namespace: argocd
+  annotations:
+    argocd.argoproj.io/sync-wave: '20'
+spec:
+  project: <PROJECT>
+  source:
+    repoURL: https://kubernetes.github.io/autoscaler
+    targetRevision: 9.37.0
+    chart: cluster-autoscaler
+    helm:
+      releaseName: cluster-autoscaler-aws
+      values: |
+        autoDiscovery:
+          clusterName: <CLUSTER_NAME>
+        awsRegion: <CLOUD_REGION>
+        cloudProvider: aws
+  destination:
+    name: <CLUSTER_DESTINATION>
+    namespace: kube-system
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true

index.yaml

@@ -14,6 +14,13 @@ apps:
     description: "A Kubernetes controller & set of CRDs which provide advanced deployment capabilities such as blue-green, canary, canary analysis, experimentation, & progressive delivery features to Kubernetes."
     category: CI/CD
 
+  - name: cluster-autoscaler-aws
+    displayName: AWS Cluster Autoscaler
+    website: "https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler"
+    imageUrl: "https://raw.githubusercontent.com/kubefirst/gitops-catalog/main/logos/cluster-autoscaler.svg"
+    description: "Configured for clusters running on AWS. Cluster Autoscaler is a tool that automatically adjusts the size of the Kubernetes cluster when one of the following conditions is true: 1) there are pods that failed to run in the cluster due to insufficient resources, or 2) there are nodes in the cluster that have been underutilized for an extended period of time and their pods can be placed on other existing nodes."
+    category: Architecture
+
   - name: cluster-autoscaler-civo
     displayName: Civo Cluster Autoscaler
     website: "https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler"