add HPA custom metrics to common helm chart

paritytech · Sep 25, 2024 · ae6749f · ae6749f
1 parent 82980b5
commit ae6749f
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Showing 4 changed files with 8 additions and 2 deletions.
diff --git a/charts/common/Chart.yaml b/charts/common/Chart.yaml
@@ -2,7 +2,7 @@ apiVersion: v2
 name: common
 description: A generic helm chart for Kubernetes
 type: application
-version: 0.7.2
+version: 0.8.0
 maintainers:
   - name: Parity
     url: https://github.com/paritytech/helm-charts
diff --git a/charts/common/README.md b/charts/common/README.md
@@ -25,7 +25,8 @@ This is intended behaviour. Make sure to run `git add -A` once again to stage ch
 | additionalPodSpec | object | `{}` | Additional Pod Spec |
 | affinity | object | `{}` | Assign custom affinity rules |
 | args | list | `[]` | Override default container args |
-| autoscaling | object | `{"enabled":false,"maxReplicas":100,"minReplicas":1,"targetCPUUtilizationPercentage":80}` | Autoscaling should be enabled for statefulsets ref: https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/ |
+| autoscaling | object | `{"customMetrics":[],"enabled":false,"maxReplicas":100,"minReplicas":1,"targetCPUUtilizationPercentage":80}` | Autoscaling should be enabled for statefulsets ref: https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/ |
+| autoscaling.customMetrics | list | `[]` | Custom HPA metrics |
 | autoscaling.enabled | bool | `false` | Enable autoscaling |
 | autoscaling.maxReplicas | int | `100` | Maximum number of pods |
 | autoscaling.minReplicas | int | `1` | Minimum number of pods |

diff --git a/charts/common/templates/hpa.yaml b/charts/common/templates/hpa.yaml
@@ -42,4 +42,7 @@ spec:
         targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
         {{- end }}
     {{- end }}
+    {{- if .Values.autoscaling.customMetrics }}
+    {{- toYaml .Values.autoscaling.customMetrics | nindent 8 }}
+    {{- end }}
 {{- end }}
diff --git a/charts/common/values.yaml b/charts/common/values.yaml
@@ -248,6 +248,8 @@ autoscaling:
   # -- Target CPU utilization percentage
   targetCPUUtilizationPercentage: 80
   # targetMemoryUtilizationPercentage: 80
+  # -- Custom HPA metrics
+  customMetrics: []
 
 # -- If enabled, create service monitor of Prometheus-Operator
 # ref: https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/user-guides/getting-started.md#include-servicemonitors