Hi James I have worked on several installations where the spool is on NFS v3 (RHEL 4x + 5x) and at least one on NFS v4 (RHEL 5x) with no difficulties.
Thanks Stephen ############################################################################ # Stephen Dennis : Senior Sales Engineer # Univa Corporation: http://univa.com/products/grid-engine.php # sden...@univa.com : 310 310 0738 : skype stephendennis.com ############################################################################ ________________________________________ From: users-boun...@gridengine.org [users-boun...@gridengine.org] On Behalf Of James Abbott [j.abb...@imperial.ac.uk] Sent: Wednesday, March 30, 2011 10:19 AM To: users@gridengine.org Subject: [gridengine users] Spooling for a shadow master... Hello, I'm in the process of reorganising our SGE setup, and would appreciate some guidance on a couple of points re: spooling. Our $SGE_ROOT is exported to all hosts from a separate clustered, highly available NFS4 server. The qmaster is using classic spooling to SGE_ROOT/spool/qmaster. I want to add a shadow master for improved resilance, but have got a little confused over the 'best' way of handling spooling for this setup. I understood it was necessary to use a BDB spooling server if using shadow masters, but see that this is essentially being deprecated due to BDB RPC issues. I've also read that classic spooling is ok via nfs4 (hence our current setup...), but have since seen comments that this only applies if the qmaster is running on Solaris (our SGE infrastructure is all CentOS 5.5). So, adding a BDB spooling server introduces RPC security weaknesses and a single point of failure, and looks like will not be an option in future releases so doesn't look like an ideal solution. The NFS server currently hosting SGE_ROOT is a clustered, highly available system, so gives us resiliance, but is using NFS4 for classic spooling really safe? It seems to be working ok for us with a single qmaster, but that may be due to luck... Bottom line question: What is the optimal spooling setup for using shadow masters? If we do decide to move to a BDB server, can I setup the spooling server and simply shutdown the qmaster, edit $SGE_ROOT/$SGE_CELL/common/bootstrap and restart the qmaster, or is it more involved than that? Many thanks, James -- Dr. James Abbott Bioinformatics Software Developer Imperial College, London _______________________________________________ users mailing list users@gridengine.org https://gridengine.org/mailman/listinfo/users --------------------------------------------------------------------- Notice from Univa Postmaster: This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. This message has been content scanned by the Univa Mail system. --------------------------------------------------------------------- _______________________________________________ users mailing list users@gridengine.org https://gridengine.org/mailman/listinfo/users
