[40092] in Hotline Meeting
Moira: prdb resync
daemon@ATHENA.MIT.EDU (David K Krikorian)
Fri Oct 17 07:53:05 1997
Date: Fri, 17 Oct 1997 07:52:53 -0400
From: David K Krikorian <dkk@MIT.EDU>
To: athena-outage@MIT.EDU
The Moira database will be down briefly tonight (in the early hours of
Saturday morning) for a protection database (prdb) resynchronization.
The prdb is where group memberships are kept (used for enforcing
directory permissions, as in `fs listacl`).
The prdb for the athena.mit.edu cell will also be unavailable during
the beginning and end of the resync, but that should be invisible to
users (unless they use the `pts` command, or unless they expect
membership changes to take effect right away). Any changes made to
unsupported personal groups during the resync will be lost. (If you,
like most people, don't know what this means, it doesn't affect you.)
SCHEDULE:
Less than 1 hour between 00:00 and 8:00 Saturday morning, 10/18.
REASON:
To proceed with the deactivation of the Class of 1996, and to
clean up inconsistencies that have crept into the AFS
protection database.
SERVICES:
Moira, AFS prdb changes in the athena.mit.edu cell.
IMPACT:
Users who were deactivated during the last academic year (the
Class of 1996 and similarly old accounts) will disappear from
the protection database, and will begin to show up in ACLs
(i.e. `fs la`) as a number (a Unix user ID), rather than as a
name (a Unix login name). Their Kerberos identities will lose
all privileges in the athena.mit.edu cell of AFS. Their
personal groups (the list with the same name as the user) will
also disappear from the prdb.
Also, certain "foreign" users (most or all of whom are at cmu)
will lose their identities in the athena.mit.edu cell.
Other than than changes described in the previous paragraphs,
this message is probably the only reason anyone will notice
the resynchronization (because of the middle-of-the-night timing).
--
David Krikorian <dkk@mit.edu>, radio: KA1NAP, groups: APO LSC SIPB Grey17,
employment: MIT/IS/Service/ASO (Athena Server Operations)
