question Re: How to create user home directory [/user/${user_name}/] automatically in HDFS after user logs in to the cluster using AD/Kerberos in Support Questions

How to create user home directory [/user/${user_name}/] automatically in HDFS after user logs in to the cluster using AD/Kerberos

dgiri_india1989 — Thu, 29 Jun 2017 16:36:41 GMT

Re: How to create user home directory [/user/${user_name}/] automatically in HDFS after user logs in to the cluster using AD/Kerberos

jsensharma — Thu, 29 Jun 2017 17:27:15 GMT

Please refer to the following doc:

Enable User Home Directory Creation:

https://docs.hortonworks.com/HDPDocuments/Ambari-2.5.0.3/bk_ambari-administration/content/create_user_home_directory.html

By editing the "/etc/ambari-server/conf/ambari-properties" and adding the following:

ambari.post.user.creation.hook=/var/lib/ambari-server/resources/scripts/post-user-creation-hook.sh

For kerberized environment you must modify the kinit file path in the default user creation hook script.

/var/lib/ambari-server/resources/scripts/post-user-creation-hook.sh

Re: How to create user home directory [/user/${user_name}/] automatically in HDFS after user logs in to the cluster using AD/Kerberos

dgiri_india1989 — Thu, 29 Jun 2017 22:05:20 GMT

Thanks Jay SenSharma for sharing the link.

Re: How to create user home directory [/user/${user_name}/] automatically in HDFS after user logs in to the cluster using AD/Kerberos

jknulst — Thu, 23 Nov 2017 21:13:13 GMT

and don't forget to add:

ambari.post.user.creation.hook.enabled=true

to "/etc/ambari-server/conf/ambari-properties" as well !!

Re: How to create user home directory [/user/${user_name}/] automatically in HDFS after user logs in to the cluster using AD/Kerberos

amol_08 — Tue, 31 Jul 2018 13:55:21 GMT

@Jay Kumar SenSharma

Hi Jay ,

if group is being sync with ambari from ldap in this case will the directory be created for the all the members in the group ?

Re: How to create user home directory [/user/${user_name}/] automatically in HDFS after user logs in to the cluster using AD/Kerberos

venkatesh_ramis — Wed, 05 Dec 2018 23:18:15 GMT

Hello jay,

May i know how to know default kinit file location?

and

my cluster is kerberized can you tell me what was the parameter in the post-user-creation-hook.sh script specifies the kinit file path?

Regards,

Venkatesh.

Re: How to create user home directory [/user/${user_name}/] automatically in HDFS after user logs in to the cluster using AD/Kerberos

jknulst — Thu, 06 Dec 2018 00:14:33 GMT

@Ramisetty Venkatesh

its easy, just execute

which kinit

on Nix and the output is what should go into the hook script part at:

echo "The cluster is secure, calling kinit ..."
  kinit_cmd="/usr/bin/kinit -kt $HDFS_KEYTAB $HDFS_PRINCIPAL"

But 9 times ou of 10 /usr/bin/kinit will be just fine

Re: How to create user home directory [/user/${user_name}/] automatically in HDFS after user logs in to the cluster using AD/Kerberos

venkatesh_ramis — Thu, 13 Dec 2018 10:53:30 GMT

Hello Jasper/Jay,

I have tried all the steps mentioned above. But user home directory was not getting created when user logs on to HDFS for first time.

The newly created user directories are getting created only after running LDAP Sync Script and followed by ambari server service restart.

We cannot perform Ambari server service restart every time when user gets created in environment. So please suggest When this hook script is getting called and executed?

and remedy for this issue.

Regards,

venkatesh.