Yes, you can do this with only 2 hosts and NFS. https://ovirt.org/documentation/vmm-guide/chap-Administrative_Tasks.html#improving-uptime-with-virtual-machine-high-availability
With the 2 hosts in the same cluster, they will both see the storage domain automatically. [He's not asking about gluster -- he's asking about NFS. gluster, split brain, arbiters, etc are not relevant.] Greg On Wed, Mar 6, 2019 at 11:58 PM Strahil <[email protected]> wrote: > I don't think that you can achieve it with only 2 nodes, as you can't > protect yourself of split brain. > Ovirt supports only glusterfs of replica 3 arbiter 1. If you create your > own glusterfs , you can use glusterd2 with a "remote arbiter" in another > location. That will give you protection from split brain and as it is > remote - the latency won't kill your write speed. > > I can recommend you to get a VM in your environment (not hosted on any of > the 2 hosts) or a small machine with a SSD and use that as pure arbiter. > > Using one of the 2 nodes as arbiter brick is not going to help, as when > that node fails - the cluster on the other node will stop working. > It's the same with hosting NFS on one of the machines. > > As far as I know DRBD is not yet fully integrated, but you can give it a > try.Still, using only 2 nodes gives no protection from split brain. > > Best Regards, > Strahil NikolovOn Mar 7, 2019 01:28, [email protected] wrote: > > > > Is it possible to have only two physical hosts with NFS and be able to > do VM HA / Failover between these hosts? > > > > Both hosts are identical with RAID Drive Arrays of 8TB. > > > > If so, can anybody point me to any docs or examples on exactly how the > Storage setup is done so that NFS will replicate across the hosts? > > > > If not what file system should I use to achieve this? > > > > Thanks > > Shane > > _______________________________________________ > > Users mailing list -- [email protected] > > To unsubscribe send an email to [email protected] > > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > > List Archives: > https://lists.ovirt.org/archives/list/[email protected]/message/5H4NDGUBBFYWI65KFNVJVVQO3O5HNPN2/ > _______________________________________________ > Users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/[email protected]/message/DZ7ZL7QLZQHUCPUTNJ3OYSOXHUM7YZKM/ > -- GREG SHEREMETA SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX Red Hat NA <https://www.redhat.com/> [email protected] IRC: gshereme <https://red.ht/sig>
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