On 08/02/2012 05:28 PM, Yount, William D wrote: > So I have been giving some thought to my fencing agent, as it seems > a proper fencing solution is integral to any cluster. I only have access to basic Optiplex 990 and 960 desktops which is what I have built my cloud out of. I have been using the fence_pcmk agent but that doesn't seem to be a great solution. It can send shutdown and reboot commands to other nodes, but the nodes usually get hung-up in their shutdown scripts waiting for NFS shares to unmount or for VMs to turn off. > > One agent that seems to come up a lot is OpenIPMI. I have done some reading on it and I can't quite get an understanding of if this is a software solution that doesn't need any hardware implementation such as a special IPMI management board. Can anyone let me know if I need hardware that specifically supports IPMI?
Our 7xx series optiplexes don't have IPMI boards. Dunno about 9x0 series, but I highly doubt it: it's something they put in machines that's supposed to run headless, not in desktops. Aside from networked PDUs (last I looked TrippLite had better bang/buck options than APC on just just about anything), the other option is to cut the node off at the switch and let it sit until someone comes in to kick it. Assuming you don't have multiple redundant NICs, you do have the someone, and so on and so forth. -- Dimitri Maziuk Programmer/sysadmin BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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