Miles O'Neal wrote:
> John Hearns said...
> 
> |At the other end of the spectrum I would advise against 'everything'
> |installs. Been there, done that at a customers request for a 64 node V20
> |cluster. It takes a looooongggg time.
> 
> That depends on your filers, network, and hardware.
> 
> It also depends on your situation- how many nodes
> of this type will you install, how much testing can
> you do, how well do you know the packages, how often
> will you need to reinstall or add nodes, etc.  If
> you know things inside out, you won't need as much
> testing.  If you don't, you'll need more.  If you
> re/install a lot, testing time is well spent.  If
> you will install 64 nodes of this exact config and
> be done with it a while, then install 64 more, let
> it be a while, etc, it may be quicker just to do
> the install.

May I advise against an 'everything' install from a different 
perspective, other than time.

DON"T DO AN EVERYTHING INSTALL ON ANYTHING PRODUCTION

I could be wrong, but I have yet to know anyone who actually does know 
the in's and out's of every single package in Scientific Linux.  This 
includes me and Connie.

A good example is someone who complained that our LVM was broken.  But 
it seems they installed 'everything' which includes the cluster LVM, and 
since they hasn't setup a cluster, LVM couldn't connect to the cluster, 
so it wouldn't run correctly.

I do my best to save these 'everything' people from themselves, but 
things get by.

Troy
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Troy Dawson  [log in to unmask]  (630)840-6468
Fermilab  ComputingDivision/CSS  CSI Group
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