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https://issues.apache.org/jira/browse/HBASE-5291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15328338#comment-15328338
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Josh Elser commented on HBASE-5291:
-----------------------------------
bq. Kerberos errrors are often hard to understand, so may be it's worth to
check whether all required params are present and throw human readable error
about it instead of relying on kerberos AI.
Ahh, that's a good point. Fail-fast is definitely something we can (and should)
do in HBase land instead of letting it filter up into Hadoop.
[~devaraj] had also mentioned to me offline that setting the Kerberos
authentication value for {{hbase.security.authentication.ui}} to {{kerberos}}
instead of {{spnego}} might be better. After re-skimming the patch and
realizing that AuthenticationFilter also uses Kerberos (and not SPNEGO), I'm
inclined to agree with him.
Let me put together a .004 quick.
> Add Kerberos HTTP SPNEGO authentication support to HBase web consoles
> ---------------------------------------------------------------------
>
> Key: HBASE-5291
> URL: https://issues.apache.org/jira/browse/HBASE-5291
> Project: HBase
> Issue Type: Improvement
> Components: master, regionserver, security
> Reporter: Andrew Purtell
> Assignee: Josh Elser
> Fix For: 2.0.0
>
> Attachments: HBASE-5291.001.patch, HBASE-5291.002.patch,
> HBASE-5291.003.patch
>
>
> Like HADOOP-7119, the same motivations:
> {quote}
> Hadoop RPC already supports Kerberos authentication.
> {quote}
> As does the HBase secure RPC engine.
> {quote}
> Kerberos enables single sign-on.
> Popular browsers (Firefox and Internet Explorer) have support for Kerberos
> HTTP SPNEGO.
> Adding support for Kerberos HTTP SPNEGO to [HBase] web consoles would provide
> a unified authentication mechanism and single sign-on for web UI and RPC.
> {quote}
> Also like HADOOP-7119, the same solution:
> A servlet filter is configured in front of all Hadoop web consoles for
> authentication.
> This filter verifies if the incoming request is already authenticated by the
> presence of a signed HTTP cookie. If the cookie is present, its signature is
> valid and its value didn't expire; then the request continues its way to the
> page invoked by the request. If the cookie is not present, it is invalid or
> it expired; then the request is delegated to an authenticator handler. The
> authenticator handler then is responsible for requesting/validating the
> user-agent for the user credentials. This may require one or more additional
> interactions between the authenticator handler and the user-agent (which will
> be multiple HTTP requests). Once the authenticator handler verifies the
> credentials and generates an authentication token, a signed cookie is
> returned to the user-agent for all subsequent invocations.
> The authenticator handler is pluggable and 2 implementations are provided out
> of the box: pseudo/simple and kerberos.
> 1. The pseudo/simple authenticator handler is equivalent to the Hadoop
> pseudo/simple authentication. It trusts the value of the user.name query
> string parameter. The pseudo/simple authenticator handler supports an
> anonymous mode which accepts any request without requiring the user.name
> query string parameter to create the token. This is the default behavior,
> preserving the behavior of the HBase web consoles before this patch.
> 2. The kerberos authenticator handler implements the Kerberos HTTP SPNEGO
> implementation. This authenticator handler will generate a token only if a
> successful Kerberos HTTP SPNEGO interaction is performed between the
> user-agent and the authenticator. Browsers like Firefox and Internet Explorer
> support Kerberos HTTP SPNEGO.
> We can build on the support added to Hadoop via HADOOP-7119. Should just be a
> matter of wiring up the filter to our infoservers in a similar manner.
> And from
> https://issues.apache.org/jira/browse/HBASE-5050?focusedCommentId=13171086&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13171086
> {quote}
> Hadoop 0.23 onwards has a hadoop-auth artifact that provides SPNEGO/Kerberos
> authentication for webapps via a filter. You should consider using it. You
> don't have to move Hbase to 0.23 for that, just consume the hadoop-auth
> artifact, which has no dependencies on the rest of Hadoop 0.23 artifacts.
> {quote}
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