Hi, On Fri, Oct 05, 2007 at 11:06:26AM +0200, Andrew Beekhof wrote: > On 10/5/07, Dominik Klein <[EMAIL PROTECTED]> wrote: > > Hi > > > > I'm currently fiddling with a cluster of xen domains on different > > physical machines. > > > > Physical Machine 1 runs virtual Machine A > > Physical Machine 2 runs virtual Machine B > > > > A and B are my HA nodes. > > > > I modified the xen-stonith plugin from [1] to work with 2 dom0 hosts and > > configured stonith to use this plugin. It works great. > > > > One thing this can not accomplish is a node reboot if dom0 loses all > > network connections (3, so I have some redundancy here). Total loss of > > network connectivity (in dom0 !!) causes splitbrain. > > > > I think suicide might help here. It should be done in the node if no > > ping hosts are available. > > > /lazy paste from another thread a few minutes ago > > the inherent problem with a suicide plugin is that you're relying on a > sick node to shoot itself... depending on exactly how sick it is, that > may or may not be impossible. > > wrt. to ssh... the "meatware" plugin would arguably be better a better > option, at least from a reliability perspective, as it will work in > all cases (providing the admin is prepared to get up at 3am or > whenever the node goes bad :-) > > > > > So here are my questions: > > Can I configure multiple stonith devices (extern/xen and suicide) at a time? > > yes, but i've no idea if/how stonith would use them
stonithd will try all devices capable of reseting the node until one succeeds. At least it should. I guess that this is not very well tested: people typically have only one stonith device. Please report how did it go. Thanks, Dejan > > Could someone share some cib.xml snippet that says "if no ping hosts are > > reachable, commit suicide"? > > instead, use pingd to make your resource's stop when connectivity is lost > > http://linux-ha.org/v2/faq/pingd > > > > Regards > > Dominik > > > > [1] http://etbe.coker.com.au/2007/06/24/xen-and-heartbeat/ > > _______________________________________________ > > Linux-HA mailing list > > [email protected] > > http://lists.linux-ha.org/mailman/listinfo/linux-ha > > See also: http://linux-ha.org/ReportingProblems > > > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
