feat: Add node affinity support for backup CronJob and update values.yaml

jellyfin/templates/backup-cronjob.yaml

@@ -44,6 +44,17 @@ spec:
               path: {{ .Values.backup.storagePath }}
               type: DirectoryOrCreate
           restartPolicy: OnFailure
+          {{- if .Values.backup.node }}
+          affinity:
+            nodeAffinity:
+              requiredDuringSchedulingIgnoredDuringExecution:
+                nodeSelectorTerms:
+                - matchExpressions:
+                  - key: kubernetes.io/hostname
+                    operator: In
+                    values:
+                    - {{ .Values.backup.node }}
+          {{- else }}
           {{- with .Values.nodeSelector }}
           nodeSelector:
             {{- toYaml . | nindent 10 }}
@@ -56,4 +67,5 @@ spec:
           tolerations:
             {{- toYaml . | nindent 10 }}
           {{- end }}
+          {{- end }}
 {{- end }}

jellyfin/values.yaml

@@ -107,6 +107,8 @@ backup:
   retentionDays: 10
   storagePath: /storage/backups/postgres
   resources: {}
+  # Node to run backup on (hostname). If set, overrides global affinity/tolerations for the backup CronJob.
+  node: ""
 
 nodeSelector: {}