feat: Add support for topologySpreadConstraints

kubernetes-sigs · Nov 17, 2023 · b7a50fd · b7a50fd
1 parent f4977d1
commit b7a50fd
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Showing 4 changed files with 16 additions and 0 deletions.
diff --git a/charts/descheduler/README.md b/charts/descheduler/README.md
@@ -84,6 +84,7 @@ The following table lists the configurable parameters of the _descheduler_ chart
 | `serviceMonitor.metricRelabelings`  | MetricRelabelConfigs to apply to samples after scraping, but before ingestion                                         | `[]`                                      |
 | `serviceMonitor.relabelings`        | RelabelConfigs to apply to samples before scraping                                                                    | `[]`                                      |
 | `affinity`                          | Node affinity to run the descheduler cronjob/deployment on specific nodes                                             | `nil`                                     |
+| `topologySpreadConstraints`         | Topology Spread Constraints to spread the descheduler cronjob/deployment across the cluster                           | `[]`                                     |
 | `tolerations`                       | tolerations to run the descheduler cronjob/deployment on specific nodes                                               | `nil`                                     |
 | `suspend`                           | Set spec.suspend in descheduler cronjob                                                                               | `false`                                   |
 | `commonLabels`                      | Labels to apply to all resources                                                                                      | `{}`                                      |

diff --git a/charts/descheduler/templates/cronjob.yaml b/charts/descheduler/templates/cronjob.yaml
@@ -51,6 +51,10 @@ spec:
           affinity:
             {{- toYaml . | nindent 12 }}
           {{- end }}
+          {{- with .Values.topologySpreadConstraints }}
+          topologySpreadConstraints:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
           {{- if .Values.dnsConfig }}
           dnsConfig:
             {{- .Values.dnsConfig | toYaml | nindent 12 }}

diff --git a/charts/descheduler/templates/deployment.yaml b/charts/descheduler/templates/deployment.yaml
@@ -80,6 +80,10 @@ spec:
       affinity:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- with .Values.topologySpreadConstraints }}
+      topologySpreadConstraints:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- with .Values.tolerations }}
       tolerations:
         {{- toYaml . | nindent 8 }}

diff --git a/charts/descheduler/values.yaml b/charts/descheduler/values.yaml
@@ -149,6 +149,13 @@ affinity: {}
 #              values:
 #                - descheduler
 #        topologyKey: "kubernetes.io/hostname"
+topologySpreadConstraints: []
+# - maxSkew: 1
+#   topologyKey: kubernetes.io/hostname
+#   whenUnsatisfiable: DoNotSchedule
+#   labelSelector:
+#     matchLabels:
+#       app.kubernetes.io/name: descheduler
 tolerations: []
 # - key: 'management'
 #   operator: 'Equal'