Added a section to kubectl cheatsheet about verbosity levels

docs/user-guide/kubectl-cheatsheet.md

@@ -279,3 +279,19 @@ Output format | Description
 `-o=name`     | Print only the resource name and nothing else
 `-o=wide`     | Output in the plain-text format with any additional information, and for pods, the node name is included
 `-o=yaml`     | Output a YAML formatted API object
+
+### Kubectl output verbosity and debugging
+
+Kubectl verbosity is controlled with the `-v` or `--v` flags followed by an integer representing the log level. General Kubernetes logging conventions and the associated log levels are described [here](https://github.com/kubernetes/community/blob/master/contributors/devel/logging.md).
+
+Verbosity | Description
+--------------| -----------
+`--v=0` | Generally useful for this to ALWAYS be visible to an operator.
+`--v=1` | A reasonable default log level if you don't want verbosity.
+`--v=2` | Useful steady state information about the service and important log messages that may correlate to significant changes in the system. This is the recommended default log level for most systems.
+`--v=3` | Extended information about changes.
+`--v=4` | Debug level verbosity.
+`--v=6` | Display requested resources.
+`--v=7` | Display HTTP request headers.
+`--v=8` | Display HTTP request contents.
+