On Thu, 2005-11-17 at 13:38 +0900, Naoki wrote: > On Wed, 2005-11-16 at 12:14 +0300, Denis Medvedev wrote: > > Lon Hohberger wrote: > > > > >If you don't care about having to do manual intervention, you can use > > >manual fencing. However, I *strongly* recommend against it. IIRC, > > >there are several example configurations for different power switches in > > >the archive for this mailing list. > > > > > > > > > > > Why not have ssh -like fencing? On a separate channel a ssh command can > > be issued to another host to reboot or to just kill cluster processes? > > In Linux-HA stonith has a ssh feature. > > Moreover, why not have a fence_stonith which will invoke stonith as a > > fencing agent? > > How about using OpenIPMI to shut off the power? Works a treat for us > but have not used it in this context. We have a wrapper that wraps around ipmitool, but on most of the systems we have tested, either ipmitool or the IPMI hardware does not work reliably. Using ipmi_ui (from OpenIPMI) seems a bit overcomplicated for this particular purpose - have you had better luck with ipmi_ui? The idea of using IPMI-over-LAN fencing is great, as long as you have an extra NIC and redundant power supplies =) -- Lon -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
