Github user liyinan926 commented on a diff in the pull request:
https://github.com/apache/spark/pull/22608#discussion_r229523838
--- Diff:
resource-managers/kubernetes/integration-tests/kerberos-yml/kerberos-set.yml ---
@@ -0,0 +1,49 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+ name: kerberos
+spec:
+ replicas: 1
+ selector:
+ matchLabels:
+ name: hdfs-kerberos
+ kerberosService: kerberos
+ job: kerberostest
+ template:
+ metadata:
+ annotations:
+ pod.beta.kubernetes.io/hostname: kerberos
+ labels:
+ name: hdfs-kerberos
+ kerberosService: kerberos
+ job: kerberostest
+ spec:
+ containers:
+ - command: ["sh"]
+ args: ["/start-kdc.sh"]
+ name: kerberos
+ imagePullPolicy: IfNotPresent
+ volumeMounts:
+ - mountPath: /var/keytabs
+ name: kerb-keytab
+ restartPolicy: Always
+ volumes:
+ - name: kerb-keytab
+ persistentVolumeClaim:
--- End diff --
With a `StatefulSet`, you don't need to explicitly manage PVCs. You can use
`.spec.persistentVolumeClaimTemplate`. The StatefulSet controller automatically
creates the PV (or binds to the existing one it created before).
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