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On Wed, October 31, 2007 22:58, James Fidell wrote: > Recently I have mostly been working on building a clustered NFS service. > > I have three servers installed with CentOS5 and RedHat's clustering > suite, talking to an iSCSI disk array with a few terabytes of disk > in. Today I finally got everything set up and configured correctly > (the documentation sucks rocks through a straw) and mounted a GFS > partition from the cluster on a fourth box. For added thrills, all > the hardware is in a rack in telehouse and everything, including the > initial OS installation had to be done remotely. To put the boot in, > the servers had disks attached to a 3ware controller that isn't > supported in the stock CentOS/RHEL5 installation. > > NFS is such that it can only actually run on one node of the cluster > at a time (though each node can run NFS servers exporting the same, > or different, partitions to different sets of clients and fail over > to the other nodes). I found which node was running NFS for my client, > connected to the power controller and switched it off. A few seconds > passed and my client's filesystem came back and could continue to be > used, no bother. Rather neat. > > I then powered up the node I'd killed, rejoined the cluster and with > a single command moved the NFS service back to it. The client didn't > even notice the change. > > The eventual plan is to run some services on CentOS5 boxes running > CS/GFS and use NFS to support services on other machines running > CentOS4.x or FreeBSD[456].x. Having become exceptionally sweary at > the software earlier today, it now looks like that may well be > possible. > > I still have a lot to learn about the system, it seems incredibly > complex, fairly volatile between releases and the documentation is > misleading in places, but overall it really is quite impressive and > for tonight at least, I'm feeling rather pleased with myself. > > James > > -- > The Mailing List for the Devon & Cornwall LUG > http://mailman.dclug.org.uk/listinfo/list > FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html > congrats at getting it all working mate.. perhaps you can provide us with an overview of how you did it (mini-howto type thing) at some point.. Disclaimer: By sending an email to me addresses you are agreeing that: 1. I am "the intended recipient"; 2. All information in the email is mine to do with as I see fit and make such financial profit, political mileage, or good joke as it lends itself to; in particular, I may quote it on usenet or publish it online; 3. I may take the contents as representing the views of your company; 4. This overrides any disclaimer or statement of confidentiality that may be included on your message. -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html