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From: "Brent Hartzell" <brent.hartzell@outlook.com> To: users@ovirt.org Sent: Friday, December 12, 2014 6:14:40 PM Subject: [ovirt-users] alternate method of fencing
Is there a way to force oVirt to place a host into maintenance mode automatically when a problem occurs? The problem we have is separate networks for everything:
2 public nics which are bonded active/backup for internet access
4 bonded gigabit nics for our Gluster network
1 IPMI
The ipmi is on a completely different network, not attached to anything else other than a VPN.
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Our cluster servers shared Gluster & hypervisor on the same hosts, which works great however, all are 1U servers so we don’t have room for another NIC to dedicate to just an ipmi network connection in addition to the ipmi card itself. Even if the PSU on a host fails, then the ipmi power management is useless anyhow and the VM’s on that host will not be moved.
I’ve tested putting a host into maintenance mode with running VM’s and it will auto-migrate the VM’s without issue. Is there a way to make oVirt just force a host into maintenance mode if there’s some sort of problem or some other fencing mechanism that will allow the VM’s to be migrated to another host?
I think this is a scheduling issue rather than fencing , please take a look at http://www.ovirt.org/Features/oVirtScheduler http://www.ovirt.org/Features/oVirtSchedulerAPI http://www.ovirt.org/Features/oVirt_External_Scheduling_Proxy
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