feat(): add HA Kustomize overlay configuration

config/ha/kustomization.yaml

@@ -0,0 +1,11 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+bases:
+  - ../default
+
+resources:
+  - pdb.yaml
+
+patchesStrategicMerge:
+  - manager_ha_patch.yaml

config/ha/manager_ha_patch.yaml

@@ -0,0 +1,18 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: operator
+  namespace: system
+spec:
+  replicas: 2
+  template:
+    spec:
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+            - weight: 100
+              podAffinityTerm:
+                topologyKey: kubernetes.io/hostname
+                labelSelector:
+                  matchLabels:
+                    control-plane: controller-manager

config/ha/pdb.yaml

@@ -0,0 +1,10 @@
+apiVersion: policy/v1
+kind: PodDisruptionBudget
+metadata:
+  name: kubeslice-worker-pdb
+  namespace: system
+spec:
+  minAvailable: 1
+  selector:
+    matchLabels:
+      control-plane: controller-manager