Add support for hpa behavior (#276)

Co-authored-by: mohazza <m.abdullah@tu-berlin.de>
Co-authored-by: Boky <bokysan@users.noreply.github.com>

Author: 3 people

README.md

@@ -649,6 +649,7 @@ Chart configuration is as follows:
 | `autoscaling.targetMemoryUtilizationPercentage` | `""` | When to scale up |
 | `autoscaling.labels` | `{}` | Additional HPA labels |
 | `autoscaling.annotations` | `{}` | Additional HPA annotations |
+| `autoscaling.behavior` | `{}` | [Configurable scaling behavior](https://kubernetes.io/docs/concepts/workloads/autoscaling/horizontal-pod-autoscale/#configurable-scaling-behavior) |
 | `nodeSelector` | `{}` | Standard Kubernetes stuff |
 | `tolerations` | `[]` | Standard Kubernetes stuff |
 | `affinity` | `{}` | Standard Kubernetes stuff |

helm/mail/templates/hpa.yaml

@@ -42,6 +42,10 @@ spec:
           type: Utilization
           averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
   {{- end }}
+  {{- with .Values.autoscaling.behavior }}
+  behavior:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
   {{- else }}
   {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
     - type: Resource

helm/mail/values.yaml

@@ -106,6 +106,7 @@ autoscaling:
   # targetMemoryUtilizationPercentage: 80
   labels: {}
   annotations: {}
+  behavior: {}
 
 nodeSelector: {}
 tolerations: []