[OpenAFS] Re: mixing AFS versions for db servers?

Lars Schimmer l.schimmer@cgv.tugraz.at
Sun, 23 Oct 2011 23:03:19 +0200

On 22.10.2011 20:30, Andrew Deason wrote:
> On Sat, 22 Oct 2011 01:06:53 +0000
> Coy Hile<coy.hile@coyhile.com>  wrote:
>> Out of curiousity (as I'm sure I'll come across it soonn enough after
>> I rebuild my cell), if all dbservers must run the same version, what
>> is the supported process for updating dbservers?  Certainly if you did
>> "yum upgrade list-of-openafs-packages" on all three and rebooted them
>> simultaneously, you'd have an outage -- however short it may be.

Only the mayor number must be same, 1.2 only with 1.2, 1.4 only with=20
1.4, 1.6 only with 1.6,...
Whatever revision behind this - usual does not care.
But yes, it does implify a short outtake. For me it was a nice sunday=20
with bad weather outside, I got a new server, set it up ahead, shut down=20
my 3 DB servers and started up the new one. Afterwards I updated the=20
other 2 remaining and started them. Took over all <30 min if well prepare=

A mayor Upgrade like this is usual needed only every few years, the=20
1.4.x cyclus was quite some years. For luck you do not ave to upgrade=20
the DB servers with fileservers - you can wait some time, e.g. use=20
maintanance window around Xmas time^^

Lars Schimmer
TU Graz, Institut f=FCr ComputerGraphik & WissensVisualisierung
Tel: +43 316 873-5405       E-Mail: l.schimmer@cgv.tugraz.at
Fax: +43 316 873-5402       PGP-Key-ID: 0x4A9B1723