Tweak K8s deployment

deploy/deployment.yaml

@@ -5,6 +5,7 @@ metadata:
   name: garrettmills-dev
   namespace: default
 spec:
+  replicas: 2
   selector:
     matchLabels:
       app: garrettmills-dev
@@ -15,6 +16,17 @@ spec:
       labels:
         app: garrettmills-dev
     spec:
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+            - weight: 100
+              podAffinityTerm:
+                labelSelector:
+                  matchExpressions:
+                    - key: app
+                      operator: In
+                      values: ['garrettmills-dev']
+                topologyKey: 'kubernetes.io/hostname'
       containers:
         - name: garrettmills-www
           image: registry.millslan.net/garrettmills/www