Add metrics-server ha component

Author: posquit0

addons/metrics-server/components/ha/deployment.yaml

@@ -0,0 +1,20 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: metrics-server
+spec:
+  replicas: 2
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 1
+  template:
+    spec:
+      affinity:
+        podAntiAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+          - labelSelector:
+              matchLabels:
+                k8s-app: metrics-server
+            namespaces:
+            - kube-system
+            topologyKey: kubernetes.io/hostname

addons/metrics-server/components/ha/kustomization.yaml

@@ -0,0 +1,9 @@
+apiVersion: kustomize.config.k8s.io/v1alpha1
+kind: Component
+
+resources:
+- pdb.yaml
+patches:
+- path: deployment.yaml
+  target:
+    kind: Deployment

addons/metrics-server/components/ha/pdb.yaml

@@ -0,0 +1,10 @@
+apiVersion: policy/v1beta1
+kind: PodDisruptionBudget
+metadata:
+  name: metrics-server
+  namespace: kube-system
+spec:
+  minAvailable: 1
+  selector:
+    matchLabels:
+      k8s-app: metrics-server