Update Stackdriver Logging documentation

docs/tasks/debug-application-cluster/logging-stackdriver.md

@@ -245,15 +245,19 @@ In this case you need to be able to change the parameters of `DaemonSet` and `Co
 
 ### Prerequisites
 
-If you're on GKE and Stackdriver Logging is enabled in your cluster, you cannot change its
-parameters. Likewise, if you're not on GKE, but Stackdriver Logging is installed as an addon,
-you won't be able to change deployment parameters using Kubernetes API. To make it possible
-to change parameters of Stackdriver Logging agents, you should switch to the API object
-deployment, when Stackdriver Logging is installed into a running cluster that didn't have any
-cluster logging solutions installed before that.
-
-You can find notes on how to install Stackdriver Logging agents into a running cluster in the
-[Deploying section](#deploying).
+If you're using GKE and Stackdriver Logging is enabled in your cluster, you
+cannot change its configuration, because it's managed and supported by GKE.
+However, you can disable the default integration and deploy your own. Note,
+that you will have to support and maintain a newly deployed configuration
+yourself: update the image and configuration, adjust the resources and so on.
+To disable the default logging integration, use the following command:
+
+```
+gcloud beta container clusters update --logging-service=none CLUSTER
+```
+
+You can find notes on how to then install Stackdriver Logging agents into
+a running cluster in the [Deploying section](#deploying).
 
 ### Changing `DaemonSet` parameters