feat(docs): Adds docs on K8s scheduled ingestion (#5984)

docs-website/sidebars.js

@@ -150,6 +150,7 @@ module.exports = {
               "metadata-ingestion/schedule_docs/intro",
               "metadata-ingestion/schedule_docs/cron",
               "metadata-ingestion/schedule_docs/airflow",
+              "metadata-ingestion/schedule_docs/kubernetes",
             ],
           },
           // {

metadata-ingestion/schedule_docs/kubernetes.md

@@ -0,0 +1,47 @@
+# Using Kubernetes
+
+If you have deployed DataHub using our official [helm charts](https://github.com/acryldata/datahub-helm) you can use the 
+datahub ingestion cron subchart to schedule ingestions. 
+
+Here is an example of what that configuration would look like in your **values.yaml**:
+
+```yaml
+datahub-ingestion-cron:
+  enabled: true
+  crons:
+    mysql:
+      schedule: "0 * * * *" # Every hour
+      recipe:
+        configmapName: recipe-config
+        fileName: mysql_recipe.yml
+```
+
+This assumes the pre-existence of a Kubernetes ConfigMap which holds all recipes being scheduled in the same namespace as
+where the cron jobs will be running.
+
+An example could be:
+```yaml
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: recipe-config
+data:
+  mysql_recipe.yml: |-
+    source:
+      type: mysql
+      config:
+        # Coordinates
+        host_port: <MYSQL HOST>:3306
+        database: dbname
+    
+        # Credentials
+        username: root
+        password: example
+    
+    sink:
+      type: datahub-rest
+      config:
+        server: http://<GMS_HOST>:8080
+```
+
+For more information, please see the [documentation](https://github.com/acryldata/datahub-helm/tree/master/charts/datahub/subcharts/datahub-ingestion-cron) of this sub-chart.