feat(helm): support topology spread constraints for webapp (#2560)

* feat(helm): support topology spread constraints

* chore(helm): update topology env var

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* chore(helm): limit spread constraints to webapp for now

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: nicktrn

hosting/k8s/helm/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: trigger
 description: The official Trigger.dev Helm chart
 type: application
-version: 4.0.1
+version: 4.0.2
 appVersion: v4.0.4
 home: https://trigger.dev
 sources:

hosting/k8s/helm/templates/webapp.yaml

@@ -419,6 +419,10 @@ spec:
       tolerations:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- with .Values.webapp.topologySpreadConstraints }}
+      topologySpreadConstraints:
+        {{- tpl (toYaml .) $ | nindent 8 }}
+      {{- end }}
 ---
 apiVersion: v1
 kind: Service

hosting/k8s/helm/values.yaml

@@ -69,6 +69,8 @@ webapp:
   nodeSelector: {}
   tolerations: []
   affinity: {}
+  # Topology Spread Constraints for pod assignment spread across your cluster among failure-domains. Evaluated as a template
+  topologySpreadConstraints: []
 
   logLevel: "info"
   gracefulShutdownTimeout: 1000