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From "Sean Busbey (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-1165) Use a unique SystemToken (credentials) for each server instance (TServer, etc.)
Date Thu, 13 Mar 2014 16:13:46 GMT


Sean Busbey commented on ACCUMULO-1165:

What does this get us over properly integrating Kerberos support into our services?

Kerberos is already the standard way that multi-service systems handle mutual authentication
(both in general and specifically within Hadoop). It's already had far better analysis done
than anything we come up with and operators that need secure set ups are more likely to be
familiar with it (or to already have established a support path for dealing with it).

> Use a unique SystemToken (credentials) for each server instance (TServer, etc.)
> -------------------------------------------------------------------------------
>                 Key: ACCUMULO-1165
>                 URL:
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: tserver
>            Reporter: Christopher Tubbs
>            Assignee: Christopher Tubbs
> Each component should use unique system credentials, and those credentials should only
be valid while a tablet server (or other component) holds a lock in zookeeper.
> This behavior more accurately reflects the security model for system components, and
may be able to help reduce or eliminate the possibility of multiple-assignment. It could also
help prevent problems of other "half-dead" components that have lost their lock (such as a
master), by adding an authentication check for the master in the tablet servers.
> It's important to realize that this ticket doesn't necessarily improve security (any
component with access to the configuration secret can fake it the lock ID), but it does provide
additional sanity checks by authenticating individual system components, and improves the
handling of failure conditions.

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