On Fri, 2010-08-27 at 08:21 -0700, David Bear wrote: > I'm wondering what experience people have had running pg 8.x in a > virtualized environment. Just to be a pain, there is no 8.x. There is 8.0.x, or more specifically the current version 8.4.x. The only reason I say this is we recently spent way too many bytes on the inner tubes trying to have that argument. > Are there any best practices to follow that differen when running on > a real metal? You need to spec your IO higher. You take an IO hit by virtualizing and it is significant. Considering provisioning at least 15% more IO than you would on bare metal. > Are there performance issue? Just the minor IO one I mentioned. > What virtual environment seems most friendly to pg ? Xen, VMWare, > other? For servers? KVM, VMWare, Xen are all perfectly serviceable. Depends on your actual business requirements. > What about storage; is it best to keep the cluster in a filesystem > that is part of the vm-image or on a mounted file system that exists > external to the image? (in other words, a /dev/sdxx that is really > some NAS type of device, or NFS? CIFS?) This has to do with actual business requirements. I tend to prefer DAS but a good SAN or NAS (iSCSI) configuration works well. I personally would avoid anything that is just a network mount like NFS or CIFS. Joshua D. Drake -- PostgreSQL.org Major Contributor Command Prompt, Inc: http://www.commandprompt.com/ - 509.416.6579 Consulting, Training, Support, Custom Development, Engineering http://twitter.com/cmdpromptinc | http://identi.ca/commandprompt -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
