[evlatests] lando replacement

[Bill Sahr]

The replacement of the database server named lando by the
server currently known as lando-new is still planned for
the double maintenance day that falls on Tue-Wed, Oct 15-16.

It is possible that some of the less intrusive work may
be done earlier.

With this change the names "lando-new" and
"lando-new.evla.nrao.edu" will disappear from our network.

Any/all programs, scripts, etc that reference the name
"lando-new" must be changed.

If one uses the available aliases (CNAMEs), the changes can be
made now, and no future changes should be necessary.

The available aliases are:

evlaparm-proddb.evla.nrao.edu
Will always point to the system currently hosting the production
version of the evla parameters dbase.

evlampts-proddb.evla.nrao.edu
evlampt-proddb.evla.nrao.edu
Will always point to the system hosting the production version of
the evla antenna monitor data archive.  evlampts is to be preferred
over evlampt.

widarmpts-proddb.evla.nrao.edu
Will always point to the system hosting the production version of
the widar correlator monitor data archive.


During the changeover both lando & lando-new and all of the databases
on these two systems, including evlaparm (the EVLA parameters dbase),
evlampts (EVLA monitor data), & widarmpts (WIDAR correlator monitor
data) will be unavailable.

There are backup/standby versions for all of these databases.  There is
a backup version of evlaparm on r2d2 (a.k.a mcstdbydb), monstdby on
r2d2, the last Oracle holdout, is the backup for evla monitor data, and
there is a duplicate of widarmpts on the machine named mcsql.

If you have any questions or wish to raise any issues please contact
either me, Bill Sahr, or Daniel Lyons.

Thank you.