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From "Kei Kori (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-26125) Delegation Token seems not appropriately stored on secrets of Kubernetes/Kerberized HDFS
Date Tue, 20 Nov 2018 03:37:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-26125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kei Kori updated SPARK-26125:
-----------------------------
    Attachment: spark-submit-stern.log

> Delegation Token seems not appropriately stored on secrets of Kubernetes/Kerberized HDFS
> ----------------------------------------------------------------------------------------
>
>                 Key: SPARK-26125
>                 URL: https://issues.apache.org/jira/browse/SPARK-26125
>             Project: Spark
>          Issue Type: Bug
>          Components: Kubernetes
>    Affects Versions: 3.0.0
>            Reporter: Kei Kori
>            Priority: Minor
>         Attachments: spark-submit-stern.log
>
>
> I tried Kerberos authentication with Kubernetes Resource Manager and an external Hadoop
and KDC.
> I tested built on [6c9c84f|https://github.com/apache/spark/commit/6c9c84ffb9c8d98ee2ece7ba4b010856591d383d]
(master + SPARK-23257).
> {code}
> $ bin/spark-submit \
>       --deploy-mode cluster \
>       --class org.apache.spark.examples.HdfsTest \
>       --master k8s://https://master01.node:6443 \
>       --conf spark.kubernetes.authenticate.driver.serviceAccountName=spark \
>       --conf spark.app.name=spark-hdfs \
>       --conf spark.executer.instances=1 \
>       --conf spark.kubernetes.container.image=docker-registry/kkori/spark:6c9c84f \
>       --conf spark.kubernetes.kerberos.enabled=true \
>       --conf spark.kubernetes.kerberos.krb5.configMapName=krb5-conf \
>       --conf spark.kubernetes.kerberos.keytab=/tmp/test.keytab \
>       --conf spark.kubernetes.kerberos.principal=test@EXTERNAL.KERBEROS.REALM.COM \
>       --conf spark.kubernetes.hadoop.configMapName=hadoop-conf \
>       local:///opt/spark/examples/jars/spark-examples_2.11-3.0.0-SNAPSHOT.jar
> {code}
> I successfully submitted into Kubernetes RM and Kubernetes spawned spark-driver and executors,
> but Hadoop Delegation Token seems wrongly stored into Kubernetes secrets, since that
contains only header like below:
> {code}
> $ kubectl get secrets spark-hdfs-1542613661459-delegation-tokens -o jsonpath='{.data.hadoop-tokens}'
| {base64 -d | cat -A; echo;}
> HDTS^@^@^@
> {code}
> The result of "kubectl get secrets" should be like folloing(I masked the actual result):
> {code}
> HDTS^@^ha-hdfs:test^@^_test@EXTERNAL.KERBEROS.REALM.COM^@^XXXX@
> {code}
> As a result, spark-driver threw GSSException for each access of HDFS.
> Full logs(submit, driver, executor) are attached.



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