doc(values): add affinity example

.drone.yml

@@ -17,7 +17,7 @@ steps:
 - name: helm lint
   commands:
   - helm lint
-  image: git.cryptic.systems/volker.raschek/helm:3.16.3
+  image: git.cryptic.systems/volker.raschek/helm:3.16.4
   resources:
     limits:
       cpu: 150
@@ -69,7 +69,7 @@ steps:
 - name: helm unittest
   commands:
   - helm unittest --strict --file 'unittests/**/*.yaml' ./
-  image: git.cryptic.systems/volker.raschek/helm:3.16.3
+  image: git.cryptic.systems/volker.raschek/helm:3.16.4
   resources:
     limits:
       cpu: 150
@@ -124,7 +124,7 @@ steps:
   - npm run readme:link
   - npm run readme:lint
   - npm run readme:parameters
-  image: docker.io/library/node:23.3.0-alpine
+  image: docker.io/library/node:23.5.0-alpine
   resources:
     limits:
       cpu: 150
@@ -187,7 +187,7 @@ steps:
       from_secret: helm_repo_password
     HELM_REPO_USERNAME:
       from_secret: helm_repo_username
-  image: git.cryptic.systems/volker.raschek/helm:3.16.3
+  image: git.cryptic.systems/volker.raschek/helm:3.16.4
   resources:
     limits:
       cpu: 150

values.yaml

@@ -93,6 +93,22 @@ deployment:
 
   ## @param deployment.affinity Affinity for the postgres-exporter deployment.
   affinity: {}
+    # nodeAffinity:
+    #   requiredDuringSchedulingIgnoredDuringExecution:
+    #     nodeSelectorTerms:
+    #     - matchExpressions:
+    #       - key: kubernetes.io/os
+    #         operator: In
+    #         values:
+    #         - linux
+    #   preferredDuringSchedulingIgnoredDuringExecution:
+    #   - weight: 20
+    #     preference:
+    #       matchExpressions:
+    #       - key: kubernetes.io/arch
+    #         operator: In
+    #         values:
+    #         - amd64
 
   ## @param deployment.initContainers List of additional init containers.
   initContainers: []