Add HPA support

charts/universal-chart/CHANGELOG.md

@@ -1,4 +1,8 @@
 # Changelog
+## 3.2.0 - May 2, 2022
+
+* feat: add HPA support and tests
+
 ## 3.1.0 - April 24, 2022
 
 * feat: add PDB support and tests

charts/universal-chart/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 description: Nixys universal Helm chart for deploy your apps to Kubernetes
 name: universal-chart
-version: 3.1.0
+version: 3.2.0
 maintainers:
 - name: Roman Andreev
   email: [email protected]

charts/universal-chart/README.md

@@ -420,6 +420,29 @@ Secret `data` object is a map where value can be a string, json or base64 encode
 | `maxUnavailable`      | Pods that can be unavailable after the eviction | `""`  |
 | `extraSelectorLabels` | Extra selectorLabels for select workload        | `{}`  |
 
+### HorizontalPodAutoscaler parameters
+
+`hpas` is map of HPA parameters, where key is a name
+
+| Name             | Description                                                             | Value                   |
+|------------------|-------------------------------------------------------------------------|-------------------------|
+| `labels`         | Extra HPA labels                                                        | `{}`                    |
+| `annotations`    | Extra HPA annotations                                                   | `{}`                    |
+| `apiVersion`     | apiVersion for HPA object                                               | `"autoscaling/v2beta1"` |
+| `minReplicas`    | minimum replicas for HPA                                                | `2`                     |
+| `maxReplicas`    | maximum replicas for HPA                                                | `3`                     |
+| `scaleTargetRef` | Required [scaleTargetRef](#hpa-scaletargetref-object-parameters) object |                         |
+| `targetCPU`      | target CPU utilization percentage                                       | `""`                    |
+| `targetMemory`   | target memory utilization percentage                                    | `""`                    |
+
+### HPA `scaleTargetRef` object parameters
+
+| Name       | Description                      | Value        |
+|------------|----------------------------------|--------------|
+| apiVersion | apiVersion for target HPA object | "apps/v1"    |
+| kind       | kind for target HPA object       | "Deployment" |
+| name       | Required name of target object   | ""           |
+
 ## Configuration and installation details
 
 ### Using private registries

charts/universal-chart/results/hpas.yaml

@@ -0,0 +1,54 @@
+---
+# Source: universal-chart/templates/hpa.yaml
+kind: HorizontalPodAutoscaler
+apiVersion: autoscaling/v2beta1
+metadata:
+  name: test-hpa0
+  namespace: "default"
+  labels:
+    app.kubernetes.io/name: test
+    app.kubernetes.io/instance: test
+    app.kubernetes.io/managed-by: Helm
+  annotations:
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: test-dep
+  minReplicas: 2
+  maxReplicas: 3
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        targetAverageUtilization: 10
+---
+# Source: universal-chart/templates/hpa.yaml
+kind: HorizontalPodAutoscaler
+apiVersion: autoscaling/v2beta1
+metadata:
+  name: test-hpa1
+  namespace: "default"
+  labels:
+    app.kubernetes.io/name: test
+    app.kubernetes.io/instance: test
+    app.kubernetes.io/managed-by: Helm
+    foo: bar
+  annotations:
+    bar.io/bar: foo
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: test-deploy
+  minReplicas: 1
+  maxReplicas: 2
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        targetAverageUtilization: 50
+    - type: Resource
+      resource:
+        name: memory
+        targetAverageUtilization: 50

charts/universal-chart/samples/hpas.yaml

@@ -0,0 +1,18 @@
+hpas:
+  hpa0:
+    scaleTargetRef:
+      name: dep
+    targetCPU: 10
+  hpa1:
+    labels:
+      foo: bar
+    annotations:
+      bar.io/bar: foo
+    minReplicas: 1
+    maxReplicas: 2
+    scaleTargetRef:
+      apiVersion: apps/v1
+      kind: Deployment
+      name: deploy
+    targetCPU: 50
+    targetMemory: 50

charts/universal-chart/templates/hpa.yaml

@@ -0,0 +1,35 @@
+{{- range $name, $hpa := .Values.hpas }}
+---
+kind: HorizontalPodAutoscaler
+apiVersion: {{ .apiVersion | default "autoscaling/v2beta1" }}
+metadata:
+  name: {{ include "helpers.app.fullname" (dict "name" $name "context" $) }}
+  namespace: {{ $.Release.Namespace | quote }}
+  labels:
+    {{- include "helpers.app.labels" $ | nindent 4 }}
+    {{- with .labels }}{{- include "helpers.tplvalues.render" (dict "value" . "context" $) | nindent 4 }}{{- end }}
+  annotations:
+    {{- with .annotations }}{{- include "helpers.tplvalues.render" (dict "value" . "context" $) | nindent 4 }}{{- end }}
+spec:
+  {{- with .scaleTargetRef }}
+  scaleTargetRef:
+    apiVersion: {{ .apiVersion | default "apps/v1" }}
+    kind: {{ .kind | default "Deployment" }}
+    name: {{ include "helpers.app.fullname" (dict "name" .name "context" $) }}
+  {{- end }}
+  minReplicas: {{ .minReplicas | default "2" }}
+  maxReplicas: {{ .maxReplicas | default "3" }}
+  metrics:
+    {{- if not (empty .targetCPU) }}
+    - type: Resource
+      resource:
+        name: cpu
+        targetAverageUtilization: {{ .targetCPU }}
+    {{- end }}
+    {{- if not (empty .targetMemory) }}
+    - type: Resource
+      resource:
+        name: memory
+        targetAverageUtilization: {{ .targetMemory }}
+    {{- end }}
+{{- end -}}