On Mon, 2003-03-31 at 07:54, DHS Webmaster wrote:
> Just a quickie. We are planning an upgrade from 7.1.3 to 7.3. Since we
> have to bring down our production server to do it we are planning on
> killing all the birds with one shot. We are running RH 7.1 and were
> planning on using RH 8. After reading a little bit recently here and
> there and installing RH 8 on a simple mail server, I'm getting a little
> nervous.
Get more nervous.
Do not ever upgrade more than one component on a production box. There
will be problems, and having multiple changed items will make
troubleshooting a multi-day nightmare. In the end you'll be forced to
back out one of your changes (ie: downgrade PostgreSQL or Redhat).
If you really *MUST* do it all in one downtime, then create an exact
copy of the production machine on a development environment, do the
upgrade there, and run a realistic workload against it using your
applications. You still may regret doing both upgrades at once, but the
possibilities of problems are minimised.
I still say do two downtimes.
--
Tim Ellis
Senior Database Architect and author, tedia2sql (http://tedia2sql.tigris.org)
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