add configMapGenerator to kustomize yaml

Author: Suraj Banakar

k8s/configmap.yaml

@@ -2,7 +2,9 @@ kind: ConfigMap
 apiVersion: v1
 metadata:
   name: pema-settings
-  namespace: pema
+  # Not specifying namespace here is intentional
+  # Check Kustomization.yaml for more info
+  # namespace: pema
 data:
   # Your config goes here
   settings: |

k8s/kustomization.yaml

@@ -1,12 +1,16 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
+# This is to set namespace on the empty
+# configmap generated by configMapGenerator in memory
 namespace: pema
-metadata:
-  name: pema
-
+patchesStrategicMerge:
+  - configmap.yaml
 resources:
-- deployment.yaml
-- configmap.yaml
-- service.yaml
-- secret.yaml
-- namespace.yaml
+  - deployment.yaml
+  - service.yaml
+  - secret.yaml
+  - namespace.yaml
+
+
+configMapGenerator:
+  - name: pema-settings