Add HPA example

README.md

@@ -3,6 +3,13 @@
 We published a step-by-step run-through on how to use Flux and Helm Operator [over
 here](https://github.com/weaveworks/flux/blob/master/site/helm-get-started.md).
 
+### Workloads
+
+podinfo
+* Kubernetes deployment, ClusterIP service and Horizontal Pod Autoscaler
+* init container automated image updates (regular expression filter)
+* container automated image updates (semantic versioning filter)
+
 ### Helm releases
 
 Mongodb

workloads/podinfo-dep.yaml

@@ -11,7 +11,6 @@ metadata:
     flux.weave.works/tag.init: regexp:^3.*
     flux.weave.works/tag.podinfod: semver:~1.3
 spec:
-  replicas: 1
   strategy:
     rollingUpdate:
       maxUnavailable: 0

workloads/podinfo-hpa.yaml

@@ -0,0 +1,19 @@
+apiVersion: autoscaling/v2beta1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: podinfo
+  namespace: demo
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: podinfo
+  minReplicas: 2
+  maxReplicas: 4
+  metrics:
+  - type: Resource
+    resource:
+      name: cpu
+      # scale up if usage is above
+      # 99% of the requested CPU (10m)
+      targetAverageUtilization: 99