What does CDH packaging do on install to facilitate Kerberos security setup?
A.
Automatically configures permissions for log files at &MAPRED_LOG_DIR/userlogs
B.
Creates users for hdfs and mapreduce to facilitate role assignment
C.
Creates directories for temp, hdfs, and mapreduce with the correct permissions
D.
Creates a set of pre-configured Kerberos keytab files and their permissions
E.
Creates and configures your kdc with default cluster values
D
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looks like B is corect
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Looks D is right
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Looks lile D is correct: http://www.cloudera.com/content/www/en-us/documentation/enterprise/5-3-x/topics/cm_sg_authentication.html
“Cloudera Manager can automatically create and deploy a keytab file for the hdfs user and a keytab file for the mapred user on every host in your cluster, as well as keytab files for the oozie and hue users on select hosts.”
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i think it’s b。Question says cdh not cm。
http://www.cloudera.com/documentation/enterprise/5-3-x/topics/cdh_sg_users_groups_verify.html
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During CDH 5 package installation of MapReduce 2.0 (YARN), the following Unix user accounts are automatically created to support security:
This User
Runs These Hadoop Programs
hdfs
HDFS: NameNode, DataNodes, Standby NameNode (if you are using HA)
yarn
YARN: ResourceManager, NodeManager
mapred
YARN: MapReduce Job History Server
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Answer is B . (CDH5 , MRV1 )
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answer :B
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