cc'ing Sahina :-)
----- Original Message ----- > From: "Doron Fediuck" <[email protected]> > To: "Giorgio Bersano" <[email protected]> > Cc: [email protected] > Sent: Monday, February 17, 2014 11:53:46 AM > Subject: Re: [Users] Asking for advice on hosted engine > > > > ----- Original Message ----- > > From: "Giorgio Bersano" <[email protected]> > > To: [email protected] > > Sent: Monday, February 17, 2014 11:20:36 AM > > Subject: [Users] Asking for advice on hosted engine > > > > Hello everybody, > > I discovered oVirt a couple of months ago when I was looking for the > > best way to manage our small infrastructure. I have read any document > > I considered useful but I would like to receive advice from the many > > experts that are on this list. > > > > I think it worths an introduction (I hope doesn't get you bored). > > > > I work in a small local government entity and I try to manage > > effectively our limited resources. > > We have many years of experience with Linux and especially with CentOS > > which we have deployed on PC (i.e. for using as firewall in remote > > locations) and moreover on servers. > > > > We have been using Xen virtualization from the early days of CentOS 5 > > and we have built our positive experience on KVM too. > > I have to say that libvirt in a small environment like ours is really > > a nice tool. > > So nothing to regret. > > > > Trying to go a little further, as already said, I stumbled upon oVirt > > and I've found the project intriguing. > > > > At the moment we are thinking of deploying it on a small environment > > of four very similar servers each having: > > - a couple of Xeon E5504 > > - 6 x 1Gb ethernet interfaces > > - 40 GB of RAM > > two of them have 72 GB of disk (mirrored) > > two of them have almost 500GB of useful RAID array > > > > Moreover we have an HP iSCSI storage that should easily satisfy our > > current storage requirement. > > > > So, given our small server pool, the necessity of another host just to > > run the supervisor seems a requirement too high. > > > > Enter "hosted engine" and the picture takes brighter colors. Well, I'm > > usually not the adventurous guy but after experimenting a little with > > oVirt 3.4 I developed better confidence. > > We would want to install the engine over the two hosts with smaller disks. > > > > For what I know, installing hosted engine mandates NFS storage. But we > > want this to be highly available too, and possibly to have it on the > > very same hosts. > > > > Here is my solution: make a gluster replicated volume across the two > > hosts and take advantage of that NFS server. > > Then I put 127.0.0.1 as the address of the NFS server in the > > hosted-engine-setup so the host is always able to reach the storage > > server (itself). > > GlusterFS configuration is done outside of oVirt that, regarding > > engine's storage, doesn't even know that it's a gluster thing. > > > > Relax, we've finally reached the point where I'm asking advice :-) > > > > Storage and virtualization experts, do you see in this configuration > > any pitfall that I've overlooked given my inexperience in oVirt, > > Gluster, NFS or clustered filesystems? > > Do you think that not only it's feasable (I know it is, I made it and > > it's working now) but it's also reliable and dependable and I'm not > > risking my neck on this setup? > > > > I've obviously made some test but I'm not at the confidence level of > > saying that all is right in the way it is designed. > > > > OK, I think I've already written too much, better I stop and humbly > > wait for your opinion but I'm obviously here if any clarification by > > my part is needed. > > > > Thank you very much for reading until this point. > > Best Regards, > > Giorgio. > > Hi Giorgio, > First of all I'm happy you're happy with your hosted engine setup ;) > > Please remember that it will be included it oVirt 3.4 which was not > released yet, and we keep testing it. So any feedback from you will > be more than welcomed, and please keep tracking for the bugs we fix. > > As for storage and high-availability, we are aware of a few potential > things Gluster are working on. So adding Sahina to comment as needed. > > Doron > _______________________________________________ > Users mailing list > [email protected] > http://lists.ovirt.org/mailman/listinfo/users > _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
