[simple-app] Introduce the topologySpreadConstraints setting to the P…

…odSpec (#34)
Nextdoor · Aug 27, 2021 · 9f85101 · 9f85101
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Showing 4 changed files with 9 additions and 2 deletions.
diff --git a/charts/simple-app/Chart.yaml b/charts/simple-app/Chart.yaml
@@ -2,7 +2,7 @@ apiVersion: v2
 name: simple-app
 description: Default Microservice Helm Chart
 type: application
-version: 0.13.0
+version: 0.13.1
 appVersion: latest
 maintainers:
   - name: diranged

diff --git a/charts/simple-app/README.md b/charts/simple-app/README.md
@@ -2,7 +2,7 @@
 
 Default Microservice Helm Chart
 
-![Version: 0.13.0](https://img.shields.io/badge/Version-0.13.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: latest](https://img.shields.io/badge/AppVersion-latest-informational?style=flat-square)
+![Version: 0.13.1](https://img.shields.io/badge/Version-0.13.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: latest](https://img.shields.io/badge/AppVersion-latest-informational?style=flat-square)
 
 [deployments]: https://kubernetes.io/docs/concepts/workloads/controllers/deployment/
 [hpa]: https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/
@@ -136,6 +136,7 @@ This feature is turned on by default if you set `Values.istio.enabled=true` and
 | tests.connection.image.repository | string | `nil` | Sets the image-name that will be used in the "connection" integration test. If this is left empty, then the .image.repository value will be used instead (and the .image.tag will also be used). |
 | tests.connection.image.tag | string | `nil` | Sets the tag that will be used in the "connection" integration test. If this is left empty, the default is "latest" |
 | tolerations | list | `[]` |  |
+| topologySpreadConstraints | list | `[]` |  |
 | virtualService.annotations | object | `{}` | Any annotations you wish to add to the `VirtualService` resource. See https://istio.io/latest/docs/reference/config/annotations/ for more details. |
 | virtualService.enabled | bool | `false` | (Boolean) Maps the Service to an Istio IngressGateway, exposing the service outside of the Kubernetes cluster. |
 | virtualService.gateways | list | `[]` | The name of the Istio `Gateway` resource that this `VirtualService` will register with. You can get a list of the avaialable `Gateways` by running `kubectl -n istio-system get gateways`. Not specifying a Gateway means that you are creating a VirtualService routing definition only inside of the Kubernetes cluster, which is totally reasonable if you want to do that. |

diff --git a/charts/simple-app/templates/deployment.yaml b/charts/simple-app/templates/deployment.yaml
@@ -228,3 +228,7 @@ spec:
       tolerations:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- with .Values.topologySpreadConstraints }}
+      topologySpreadConstraints:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
diff --git a/charts/simple-app/values.yaml b/charts/simple-app/values.yaml
@@ -296,6 +296,8 @@ nodeSelector: {}
 
 tolerations: []
 
+topologySpreadConstraints: []
+
 affinity: {}
 
 # Monitoring configuration for metric scraping against the Prometheus-style