Snappymail containers should not run on same host

charts/snappymail/v0.1.0/templates/deployment.yaml

@@ -53,10 +53,22 @@ spec:
       nodeSelector:
         {{- toYaml . | nindent 8 }}
       {{- end }}
-      {{- with .Values.affinity }}
       affinity:
-        {{- toYaml . | nindent 8 }}
-      {{- end }}
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+            - weight: 100
+              podAffinityTerm:
+                labelSelector:
+                  matchExpressions:
+                    - key: app.kubernetes.io/name
+                      operator: In
+                      values:
+                        - {{ include "snappymail.name" . }}
+                    - key: app.kubernetes.io/instance
+                      operator: In
+                      values:
+                        - {{ .Release.Name }}
+                topologyKey: "kubernetes.io/hostname"
       {{- with .Values.tolerations }}
       tolerations:
         {{- toYaml . | nindent 8 }}

charts/snappymail/v0.1.0/values.yaml

@@ -64,8 +64,6 @@ nodeSelector: {}
 
 tolerations: []
 
-affinity: {}
-
 persistence:
   accessMode: ReadWriteMany
   size: 8Gi