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Add Horizontal Pod Autoscaler to echo-server chart #52

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09aed55
add hpa
Mar 19, 2025
4555774
docs
Mar 19, 2025
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5 changes: 5 additions & 0 deletions charts/echo-server/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,10 @@ helm upgrade -i ${name} ealenn/echo-server --namespace ${namespace} --force
| application.enable.request | bool | `true` | Enable request in response |
| application.logs.ignore.ping | bool | `false` | Don't log ping request on route `/ping` |
| fullnameOverride | string | `""` | |
| hpa.enabled | bool | `false` | |
| hpa.maxReplicas | int | `5` | |
| hpa.metrics | list | `[]` | |
| hpa.minReplicas | int | `1` | |
| image.pullPolicy | string | `"IfNotPresent"` | |
| image.repository | string | `"ealen/echo-server"` | https://hub.docker.com/r/ealen/echo-server |
| image.tag | string | `"0.6.0"` | https://github.com/Ealenn/Echo-Server/releases |
Expand All @@ -49,6 +53,7 @@ helm upgrade -i ${name} ealenn/echo-server --namespace ${namespace} --force
| ingress.hosts[0].host | string | `"cluster.local"` | |
| ingress.hosts[0].paths[0] | string | `"/"` | |
| ingress.ingressClassName | string | `""` | |
| ingress.pathType | string | `"ImplementationSpecific"` | |
| ingress.tls | list | `[]` | |
| livenessProbe.failureThreshold | int | `3` | |
| livenessProbe.httpGet.httpHeaders[0].name | string | `"x-echo-code"` | |
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21 changes: 21 additions & 0 deletions charts/echo-server/templates/hpa.yaml
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@@ -0,0 +1,21 @@
{{- if .Values.hpa }}
{{- if .Values.hpa.enabled }}
{{- if .Values.resources.requests }}
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
name: {{ include "echo-server.fullname" . }}
labels:
{{ include "echo-server.labels" . | indent 4 }}
spec:
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: {{ include "echo-server.fullname" . }}
minReplicas: {{ .Values.hpa.minReplicas }}
maxReplicas: {{ .Values.hpa.maxReplicas }}
metrics:
{{- toYaml .Values.hpa.metrics | nindent 2 }}
{{- end }}
{{- end }}
{{- end }}
18 changes: 18 additions & 0 deletions charts/echo-server/values.yaml
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Expand Up @@ -46,6 +46,24 @@ resources:
cpu: 50m
memory: 128Mi

hpa:
enabled: false
minReplicas: 1
maxReplicas: 5
metrics: []
# - resource:
# name: cpu
# target:
# averageUtilization: 75
# type: Utilization
# type: Resource
# - resource:
# name: memory
# target:
# averageUtilization: 75
# type: Utilization
# type: Resource

nodeSelector: {}

tolerations: []
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