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From Larry McCay <lmc...@hortonworks.com>
Subject Re: How to login a user with password to Kerberos Hadoop instead of ticket cache or key tab file ?
Date Mon, 06 Oct 2014 17:57:51 GMT
You may find this approach interesting.
https://issues.apache.org/jira/browse/HADOOP-10342

The idea is that you preauthenticate using JAAS/krb5 or something in your
application and then leverage the resulting java Subject to assert the
authenticated identity.

On Mon, Oct 6, 2014 at 1:51 PM, Xiaohua Chen <xiaohua.chen@gmail.com> wrote:

> Hi Experts,
>
> We have a use case which needs to login user into Kerberos hadoop
> using the kerberos user's name and password.
>
> I have searched around and only found that
> 1) one can login a user  from ticket cache ( this is the default one)  or
> 2) login a user from this user's keytab file e.g.
>  UserGroupInformation.loginUserFromKeytabAndReturnUGI("sochen",
> "/tmp/sochen.keytab"));
>
> Can you shed some light how I can login a user using his kerberos
> password and get a UserGroupInformation object so I can invoke
> doAs(....) to access the HDFS file system ?
>
> Thanks a lot!
>
> Sophia
>

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