Hi Sahina, First: sorry for my delayed response. I wasn't able to respond earlier.
I already planned on adding the 4th node as a gluster client, so thank you for confirming that this works. Why I was in doubt is that certain VMs with a lot of storage I/O on the 4th node have to replicate to 3 other hosts (the replica-3 gluster nodes) over the storage network, while a VM on 1 of the replica-3 gluster nodes only has to replicate to two other nodes over the network, thus creating less network traffic. Does this make sense? And if it does: can that be an issue? Regards, Bertjan On Fri, Sep 23, 2016 at 04:47:25PM +0530, Sahina Bose wrote: > > > On Fri, Sep 23, 2016 at 4:14 PM, Davide Ferrari <[email protected]> wrote: > > I'm struggling with the same problem (I say struggling because I'm still > having stability issues for what i consider a stable cluster) but you can: > - create a replica 3 engine gluster volume > - create replica 2 data, iso and export volumes > > > What are the stability issues you're facing? Data volume if used as a data > storage domain should be a replica 3 volume as well. > > > > Deploy the hosted-engine on the first VM (with the engine volume) froom > the > CLI, then log in Ovirt admin, enable gluster support, install *and deploy* > from the GUI host2 and host3 (where the engine bricks are) and then > install > host4 without deploying. This should get you the 4 hosts online, but the > engine will run only on the first 3 > > > Right. You can add the 4th node to the cluster, but not have any bricks on > this > volume in which case VMs will be run on this node but will access data from > the > other 3 nodes. > > > > 2016-09-23 11:14 GMT+02:00 Goorkate, B.J. <[email protected]>: > > Dear all, > > I've tried to find a way to add a 4th oVirt-node to my existing > 3-node setup with replica-3 gluster storage, but found no usable > solution yet. > > From what I read, it's not wise to create a replica-4 gluster > storage, because of bandwith overhead. > > Is there a safe way to do this and still have 4 equal oVirt nodes? > > Thanks in advance! > > Regards, > > Bertjan > > ------------------------------------------------------------ > ------------------ > > De informatie opgenomen in dit bericht kan vertrouwelijk zijn en is > uitsluitend bestemd voor de geadresseerde. Indien u dit bericht > onterecht > ontvangt, wordt u verzocht de inhoud niet te gebruiken en de afzender > direct > te informeren door het bericht te retourneren. Het Universitair > Medisch > Centrum Utrecht is een publiekrechtelijke rechtspersoon in de zin van > de W.H.W. > (Wet Hoger Onderwijs en Wetenschappelijk Onderzoek) en staat > geregistreerd bij > de Kamer van Koophandel voor Midden-Nederland onder nr. 30244197. > > Denk s.v.p aan het milieu voor u deze e-mail afdrukt. > > ------------------------------------------------------------ > ------------------ > > This message may contain confidential information and is intended > exclusively > for the addressee. If you receive this message unintentionally, please > do not > use the contents but notify the sender immediately by return e-mail. > University > Medical Center Utrecht is a legal person by public law and is > registered at > the Chamber of Commerce for Midden-Nederland under no. 30244197. > > Please consider the environment before printing this e-mail. > _______________________________________________ > Users mailing list > [email protected] > http://lists.ovirt.org/mailman/listinfo/users > > > > > -- > Davide Ferrari > Senior Systems Engineer > > _______________________________________________ > Users mailing list > [email protected] > http://lists.ovirt.org/mailman/listinfo/users > > > _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
