Github user liyinan926 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21669#discussion_r221664063
--- Diff: docs/running-on-kubernetes.md ---
@@ -820,4 +820,28 @@ specific to Spark on Kubernetes.
This sets the major Python version of the docker image used to run the
driver and executor containers. Can either be 2 or 3.
</td>
</tr>
+<tr>
+ <td><code>spark.kubernetes.kerberos.krb5location</code></td>
+ <td><code>(none)</code></td>
+ <td>
+ Specify the location of the krb5 file to be mounted on the driver and
executors for Kerberos interaction.
+ It is important to note that for local files, the KDC defined needs to
be visible from inside the containers.
+ </td>
+</tr>
+<tr>
+ <td><code>spark.kubernetes.kerberos.tokensecret.name</code></td>
+ <td><code>(none)</code></td>
+ <td>
+ Specify the name of the secret where your existing delegation token is
stored. This removes the need for the job user
+ to provide any keytab for launching a job.
+ </td>
+</tr>
+<tr>
+ <td><code>spark.kubernetes.kerberos.tokensecret.itemkey</code></td>
--- End diff --
Ditto. `.tokenSecret.itemKey`.
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