[common] Add topologySpreadConstraints to Common Chart (k8s-at-home#66)

* Feature: Add topologySpreadConstraints to common chart * Feature: Bump common chart version to 3.1.2 * Feature: Bump common chart version to 3.2.0 instead * Update charts/stable/common/values.yaml Thanks for the suggestion @rwaltr Co-authored-by: Ryan Walter <[email protected]> Co-authored-by: Ryan Walter <[email protected]>
mrak- · Jun 16, 2021 · 5c93f1a · 5c93f1a
1 parent f662b39
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Showing 5 changed files with 31 additions and 2 deletions.
diff --git a/charts/stable/common/Chart.yaml b/charts/stable/common/Chart.yaml
@@ -2,7 +2,7 @@ apiVersion: v2
 name: common
 description: Function library for k8s-at-home charts
 type: library
-version: 3.1.1
+version: 3.2.0
 kubeVersion: ">=1.16.0-0"
 keywords:
   - k8s-at-home

diff --git a/charts/stable/common/README.md b/charts/stable/common/README.md
@@ -1,6 +1,6 @@
 # common
 
-![Version: 3.1.1](https://img.shields.io/badge/Version-3.1.1-informational?style=flat-square) ![Type: library](https://img.shields.io/badge/Type-library-informational?style=flat-square)
+![Version: 3.2.0](https://img.shields.io/badge/Version-3.2.0-informational?style=flat-square) ![Type: library](https://img.shields.io/badge/Type-library-informational?style=flat-square)
 
 Function library for k8s-at-home charts
 
@@ -206,6 +206,7 @@ N/A
 | serviceAccount.create | bool | `false` | Specifies whether a service account should be created |
 | serviceAccount.name | string | `""` | The name of the service account to use. If not set and create is true, a name is generated using the fullname template |
 | tolerations | list | `[]` | Specify taint tolerations [[ref]](https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/) |
+| topologySpreadConstraints | list | `[]` | Defines topologySpreadConstraint rules. [[ref]](https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/) |
 | volumeClaimTemplates | list | `[]` | Used in conjunction with `controller.type: statefulset` to create individual disks for each instance. |
 
 ## Changelog
@@ -215,6 +216,12 @@ All notable changes to this library Helm chart will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+### [3.2.0]
+
+#### Added
+
+- Support for specifying [topologySpreadConstraints](https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/) for a pod.
+
 ### [3.1.1]
 
 #### Fixed
@@ -381,6 +388,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - The `command` and `args` values now properly support both string and list values.
 
+[3.2.0]: #3.2.0
+[3.1.1]: #3.1.1
 [3.1.0]: #3.1.0
 [3.0.2]: #3.0.2
 [3.0.1]: #3.0.1

diff --git a/charts/stable/common/README_CHANGELOG.md.gotmpl b/charts/stable/common/README_CHANGELOG.md.gotmpl
@@ -10,6 +10,12 @@ All notable changes to this library Helm chart will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+### [3.2.0]
+
+#### Added
+
+- Support for specifying [topologySpreadConstraints](https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/) for a pod.
+
 ### [3.1.1]
 
 #### Fixed
@@ -176,6 +182,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - The `command` and `args` values now properly support both string and list values.
 
+[3.2.0]: #3.2.0
+[3.1.1]: #3.1.1
 [3.1.0]: #3.1.0
 [3.0.2]: #3.0.2
 [3.0.1]: #3.0.1

diff --git a/charts/stable/common/templates/lib/controller/_pod.tpl b/charts/stable/common/templates/lib/controller/_pod.tpl
@@ -60,6 +60,10 @@ nodeSelector:
 affinity:
     {{- toYaml . | nindent 2 }}
   {{- end }}
+  {{- with .Values.topologySpreadConstraints }}
+topologySpreadConstraints:
+    {{- toYaml . | nindent 2 }}
+  {{- end }}
   {{- with .Values.tolerations }}
 tolerations:
     {{- toYaml . | nindent 2 }}

diff --git a/charts/stable/common/values.yaml b/charts/stable/common/values.yaml
@@ -403,6 +403,14 @@ nodeSelector: {}
 # [[ref]](https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#affinity-and-anti-affinity)
 affinity: {}
 
+# -- Defines topologySpreadConstraint rules.
+# [[ref]](https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/)
+topologySpreadConstraints: []
+# - maxSkew: <integer>
+#   topologyKey: <string>
+#   whenUnsatisfiable: <string>
+#   labelSelector: <object>
+
 # -- Specify taint tolerations
 # [[ref]](https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/)
 tolerations: []