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From "Christopher Tubbs (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-1165) Use a unique SystemToken (credentials) for each server instance (TServer, etc.)
Date Thu, 07 Mar 2013 23:12:12 GMT
Christopher Tubbs created ACCUMULO-1165:
-------------------------------------------

             Summary: Use a unique SystemToken (credentials) for each server instance (TServer,
etc.)
                 Key: ACCUMULO-1165
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1165
             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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