I have been wondering this lately. Is there a way to setup 2 servers with the exact same information, and use one as a primary server and one as a secondary server. So if the first server goes down for upgrade, the secondary kicks in and fullfills all the requests so no downtime occures to the services you are offering. I have a 2 server setup this way for radius on some livingston and 3com boxes, and that is really working great, if the first server goes down the portmaster looks to server number 2 to auth users, etc. I have seen a few things like these hanging around in most things, but can't firgure the major part of it. For example, say you want a backup smtp and pop3 server. You can setup the MX records in bind to look at serverone.domain.com first and if it can't send mail then it sends it to servertwo.domain.com. The thing I can't firgure out with this is, what if it is a user sending mail from 'eudora' or 'out look express' and they put serverone.domain.com for their smtp server, if it is down their mail client has no reason to look at servertwo.domain.com And if you want to do this with pop3, that could get confusing, would you have to have 1 user account created 2, once for each machine? What I am trying to do this with it httpd (apache) smtp (sendmail) pop3 (qpopper, can use other pop3d if required) radius(already done) Anyone know of a good book or online free (as in beer) howto that would explain the theory behind it, and how to do it in a productive envoriment?
From a customers point for view they would have a %100 up time to all services, even if behind the scences one server went down for 2 hours to do an upgrade. Having it seemless and unnoticiable to the end user would be great.
I don't expect anyone to explain everything in an email since it is an
advanced topic (to me atleast), but if you could point me to a doc or book
that could explain it, it would really help me out allot.
Thanks,
Jack
----- Original Message -----
From: Joakim Schramm
Michael Bartosh skrev:
I would like to know of an other, real "hard core" reason. I have 500Km to go updating my server, and I don't like it to be as last time...
when
I cam back from my second "Update trip" of 6.2, 6.3 was on my desk waiting for me.
IMHO if reiserfs is included as an install option and LVM support is cleaned up in the installer it will be well worth the upgrade. But if you've got a preexisting location... guess you'll have to look for another reason.
Well, there is always the classic one - girls, I especially know one who always welcome me giving her computer a tuch :)
Joakim
-mab
Joakim
Jon Pennington skrev:
On Tue, 15 Feb 2000, Marcel Hoogeveen wrote:
I have a simple question.
When will SuSE 6.4 or 7.0 be out. ?? Any date's available. ?
If you look at the release cycles in the past, SuSE publishes a new
release
every 4-6 months, based on activity in the core projects (the kernel, XFree86, etc). Out of curiosity, why do you ask?
-- -=|JP|=- Jon Pennington | Atipa Linux Solutions -o) jpennington@atipa.com | Kansas City, MO /\\ 816-241-2641 x107 | http://www.atipa.com _\_V
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