[jira] [Created] (ACCUMULO-1165) Use a unique SystemToken (credentials) for each server instance (TServer, etc.)

["Christopher Tubbs (JIRA)" <ji...@apache.org>]

Christopher Tubbs created ACCUMULO-1165:
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             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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