Code is successfully authenticating to Kerberos but when I try to run any hdfs
command I get error as "Failed to specify server's kerberos principal name"
Can somebody please assist me on this?
Sent from my android device.
-----Original Message-----
From: andreina j <andrein...@huawei.com>
To: "user@hadoop.apache.org" <user@hadoop.apache.org>
Sent: Mon, 02 Nov 2015 4:57 pm
Subject: RE: Authenticating to Kerberos enabled Hadoop cluster using Java
Hi Chhaya,
Please find below sample code .
System.setProperty("java.security.krb5.conf",
"D:\\data\\Desktop\\cluster-test\\krb5.conf<file:///\\data\Desktop\cluster-test\krb5.conf>");
// Login using keytab if have access to keytab. else
UserGroupInformation.loginUserFromKeytab("hdfs/had...@hadoop.com<mailto:hdfs/had...@hadoop.com>",
"
D:\\data\\Desktop\\cluster-test\\conf\\hdfs.keytab<file:///\\data\Desktop\cluster-test\conf\hdfs.keytab>");
Note: Above 2 lines should be at the beginning in your application.
Regards
Andreina J
From: Vishwakarma, Chhaya [mailto:chhaya.vishwaka...@thinkbiganalytics.com]
Sent: 02 November 2015 PM 04:20
To: user@hadoop.apache.org
Subject: RE: Authenticating to Kerberos enabled Hadoop cluster using Java
Thanks Niranjan It would be great if you can share a sample code if any?
From: Niranjan Subramanian [mailto:niran...@webaction.com]
Sent: 02 November 2015 16:18
To: user@hadoop.apache.org<mailto:user@hadoop.apache.org>
Subject: Re: Authenticating to Kerberos enabled Hadoop cluster using Java
Hi Chhaya,
You can use the UserGroupInformation class from org.apache.hadoop.security
package.
Specifically following 2 methods of that class
UserGroupInformation.setConfiguration(hdfsConfiguration);
UserGroupInformation.loginUserFromKeytab(principal, keytabPath);
Regards,
Niranjan
On 02-Nov-2015, at 4:15 pm, Vishwakarma, Chhaya
<chhaya.vishwaka...@thinkbiganalytics.com<mailto:chhaya.vishwaka...@thinkbiganalytics.com>>
wrote:
I have Kerberos enabled Hadoop cluster, I need to perform HDFS operations using
JAVA code.
I have keytab file and username can someone please suggest how can I
autheticate to Kerberos using JAVA code?
Regards,
Chhaya
