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From "Nicolas Liochon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9482) Do not enforce secure Hadoop for secure HBase
Date Tue, 10 Sep 2013 07:37:54 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13762820#comment-13762820
] 

Nicolas Liochon commented on HBASE-9482:
----------------------------------------

I'm +1 on the patch, but
 - a review by Andrew or Gary would be better
 - this needs a release notes and a fat warning in the documentation, as someone upgrading
will have to change its settings to keep hbase running in secure mode. Especially for 0.94.

brw, it's strange that it does not impact any unit test.
                
> Do not enforce secure Hadoop for secure HBase
> ---------------------------------------------
>
>                 Key: HBASE-9482
>                 URL: https://issues.apache.org/jira/browse/HBASE-9482
>             Project: HBase
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 0.95.2, 0.94.11
>            Reporter: Aditya Kishore
>            Assignee: Aditya Kishore
>              Labels: security
>             Fix For: 0.96.0
>
>         Attachments: HBASE-9482-0.94.patch, HBASE-9482.patch
>
>
> We should recommend and not enforce secure Hadoop underneath as a requirement to run
secure HBase.
> Few of our customers have HBase clusters which expose only HBase services to outside
the physical network and no other services (including ssh) are accessible from outside of
such cluster.
> However they are forced to setup secure Hadoop and incur the penalty of security overhead
at filesystem layer even if they do not need to.
> The following code tests for both secure HBase and secure Hadoop.
> {code:title=org.apache.hadoop.hbase.security.User|borderStyle=solid}
>   /**
>    * Returns whether or not secure authentication is enabled for HBase.  Note that
>    * HBase security requires HDFS security to provide any guarantees, so this requires
that
>    * both <code>hbase.security.authentication</code> and <code>hadoop.security.authentication</code>
>    * are set to <code>kerberos</code>.
>    */
>   public static boolean isHBaseSecurityEnabled(Configuration conf) {
>     return "kerberos".equalsIgnoreCase(conf.get(HBASE_SECURITY_CONF_KEY)) &&
>         "kerberos".equalsIgnoreCase(
>             conf.get(CommonConfigurationKeys.HADOOP_SECURITY_AUTHENTICATION));
>   }
> {code}
> What is worse that if {{"hadoop.security.authentication"}} is not set to {{"kerberos"}}
(undocumented at http://hbase.apache.org/book/security.html), all other configuration have
no impact and HBase RPCs silently switch back to unsecured mode.

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