enable topology spread constraints and topology aware routing (#86)

* enable topology spread constraints and topology aware routing

* update chart-testing-action

.github/workflows/ci.yaml

@@ -41,7 +41,7 @@ jobs:
           check-latest: true
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.4.0
+        uses: helm/chart-testing-action@v2.6.1
 
       - name: Run chart-testing (list-changed)
         id: list-changed

charts/imaginary/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "1.2.4"
 description: Deploy imaginary to process pictures on the fly
 name: imaginary
-version: 0.1.12
+version: 0.2.0
 home: https://github.com/h2non/imaginary
 sources:
   - https://github.com/ricardo-ch/helm-charts/tree/main/charts/imaginary
@@ -15,7 +15,8 @@ keywords:
   - h2non
 annotations:
   artifacthub.io/changes: |
-    - Readme template change
+    - Add TopologySpreadConstraints to the deployment
+    - Add Topology Aware Hints to the service
   artifacthub.io/images: |
     - name: imaginary
       image: h2non/imaginary:1.2.4

charts/imaginary/README.md

@@ -1,6 +1,6 @@
 # imaginary
 
-![Version: 0.1.12](https://img.shields.io/badge/Version-0.1.12-informational?style=flat-square) ![AppVersion: 1.2.4](https://img.shields.io/badge/AppVersion-1.2.4-informational?style=flat-square) ![Release Status](https://github.com/ricardo-ch/helm-charts/workflows/Release%20Charts/badge.svg) [![License](https://img.shields.io/github/license/ricardo-ch/helm-charts)](https://github.com/ricardo-ch/helm-charts/blob/main/LICENSE)
+![Version: 0.2.0](https://img.shields.io/badge/Version-0.2.0-informational?style=flat-square) ![AppVersion: 1.2.4](https://img.shields.io/badge/AppVersion-1.2.4-informational?style=flat-square) ![Release Status](https://github.com/ricardo-ch/helm-charts/workflows/Release%20Charts/badge.svg) [![License](https://img.shields.io/github/license/ricardo-ch/helm-charts)](https://github.com/ricardo-ch/helm-charts/blob/main/LICENSE)
 
 This chart installs [Imaginary](https://github.com/h2non/imaginary).
 
@@ -51,6 +51,8 @@ Simply add this Chart repository to Helm:
 | tls.certificate | string | `""` | Base64 encoded TLS certificate file |
 | tls.privateKey | string | `""` | Base64 encoded private key file for TLS certificate. |
 | tolerations | list | `[]` | A toleration |
+| topologyAware | string | `"auto"` | Configures Toplogy Aware Hints |
+| topologyKey | string | `"topology.kubernetes.io/zone"` | Configures the key for topology spread constraints |
 
 ## Source Code
 

charts/imaginary/templates/deployment.yaml

@@ -46,6 +46,16 @@ spec:
       - name: "imaginary"
         image: {{ .Values.image | quote }}
         imagePullPolicy: {{ .Values.imagePullPolicy }}
+        topologySpreadConstraints:
+        - labelSelector:
+            matchExpressions:
+            - key: app.kubernetes.io/name
+              operator: In
+              values:
+              - {{ .Release.Name | quote }}
+          maxSkew: 1
+          topologyKey: {{ .Values.topologyKey | quote }}
+          whenUnsatisfiable: DoNotSchedule
         env:
         - name: PORT
           value: {{ .Values.httpPort | quote }}

charts/imaginary/templates/service.yaml

@@ -8,6 +8,8 @@ metadata:
     release: {{ .Release.Name | quote }}
     chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
     app: {{ .Release.Name | quote }}
+  annotations:
+    service.kubernetes.io/topology-aware-hints: {{ .Values.topologyAware | quote }}
 spec:
   selector:
     app: {{ template "imaginary.fullname" . }}

charts/imaginary/values.yaml

@@ -91,3 +91,9 @@ pdb:
 hpa:
   minReplicas: 2
   maxReplicas: 2
+
+# -- Configures Toplogy Aware Hints
+topologyAware: auto
+
+# -- Configures the key for topology spread constraints
+topologyKey: topology.kubernetes.io/zone