[incubator/vault] Add affinity setting (#3841)

* Add affinity setting

* Minor version bump to 0.4.0

incubator/vault/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: A Helm chart for Vault, a tool for managing secrets
 name: vault
-version: 0.3.1
+version: 0.4.0
 appVersion: 0.9.0
 home: https://www.vaultproject.io/
 icon: https://www.vaultproject.io/assets/images/mega-nav/logo-vault-0f83e3d2.svg

incubator/vault/README.md

@@ -56,6 +56,7 @@ The following tables lists the configurable parameters of the vault chart and th
 | `replicaCount`          | k8s replicas                        | `1`                                                 |
 | `resources.limits.cpu`  | Container requested CPU             | `nil`                                               |
 | `resources.limits.memory` | Container requested memory        | `nil`                                               |
+| `affinity`              | Affinity settings                   | See values.yaml                                               |
 
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`.
 

incubator/vault/templates/deployment.yaml

@@ -48,16 +48,10 @@ spec:
         {{- end }}
         resources:
 {{ toYaml .Values.resources | indent 10 }}
+      {{- if .Values.affinity }}
       affinity:
-        podAntiAffinity:
-          preferredDuringSchedulingIgnoredDuringExecution:
-          - weight: 100
-            podAffinityTerm:
-              topologyKey: kubernetes.io/hostname
-              labelSelector:
-                matchLabels:
-                  app: {{ template "vault.fullname" . }}
-                  release: {{ .Release.Name | quote }}
+{{ tpl .Values.affinity . | indent 8 }}
+      {{- end }}
       volumes:
         - name: vault-config
           configMap:

incubator/vault/values.yaml

@@ -37,6 +37,17 @@ resources: {}
   # requests:
   #   cpu: 100m
   #   memory: 128Mi
+affinity: |
+  podAntiAffinity:
+    preferredDuringSchedulingIgnoredDuringExecution:
+    - weight: 100
+      podAffinityTerm:
+        topologyKey: kubernetes.io/hostname
+        labelSelector:
+          matchLabels:
+            app: {{ template "vault.fullname" . }}
+            release: {{ .Release.Name }}
+
 vault:
   # Only used to enable dev mode. When in dev mode, the rest of this config
   # section below is not used to configure Vault. See