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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13707) If kerberos is enabled while HTTP SPNEGO is not configured, some links cannot be accessed
Date Tue, 11 Oct 2016 14:40:20 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15565604#comment-15565604
] 

Allen Wittenauer commented on HADOOP-13707:
-------------------------------------------

/logs was specifically blocked way back when due to the sensitive nature of the content. Non-admin
users shouldn't be looking at it at all and admin users have access from the shell.

> If kerberos is enabled while HTTP SPNEGO is not configured, some links cannot be accessed
> -----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-13707
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13707
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Yuanbo Liu
>              Labels: security
>         Attachments: HADOOP-13707.001.patch
>
>
> In {{HttpServer2#hasAdministratorAccess}}, it uses `hadoop.security.authorization` to
detect whether HTTP is authenticated.
> It's not correct, because enabling Kerberos and HTTP SPNEGO are two steps. If Kerberos
is enabled while HTTP SPNEGO is not, some links cannot be accessed, such as "/logs", and it
will return error message as below:
> {quote}
> HTTP ERROR 403
> Problem accessing /logs/. Reason:
> User dr.who is unauthorized to access this page.
> {quote}
> We should use {{hadoop.http.authentication.type}} instead of {{hadoop.security.authorization}}
to detect whether HTTP authentication is enabled, if the value of  {{hadoop.http.authentication.type}}
 equals `simple`, anybody has administrator access.



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