As long as all your compute nodes are part of the gluster peer, localhost will work. Just remember, gluster will connect to any server, so even if you mount as localhost:/ it could be accessing the storage from another host in the gluster peer group.
On Fri, Jul 4, 2014 at 3:26 PM, Punit Dambiwal <hypu...@gmail.com> wrote: > Hi Andrew, > > Yes..both on the same node...but i have 4 nodes of this type in the same > cluster....So it should work or not ?? > > 1. 4 physical nodes with 12 bricks each(distributed replicated)... > 2. The same all 4 nodes use for the compute purpose also... > > Do i still require the VIP...or not ?? because i tested even the mount point > node goes down...the VM will not pause and not affect... > > > On Fri, Jul 4, 2014 at 1:18 PM, Andrew Lau <and...@andrewklau.com> wrote: >> >> Or just localhost as your computer and storage are on the same box. >> >> >> On Fri, Jul 4, 2014 at 2:48 PM, Punit Dambiwal <hypu...@gmail.com> wrote: >> > Hi Andrew, >> > >> > Thanks for the update....that means HA can not work without VIP in the >> > gluster,so better to use the glusterfs with the VIP to take over the >> > ip...in >> > case of any storage node failure... >> > >> > >> > On Fri, Jul 4, 2014 at 12:35 PM, Andrew Lau <and...@andrewklau.com> >> > wrote: >> >> >> >> Don't forget to take into consideration quroum, that's something >> >> people often forget >> >> >> >> The reason you're having the current happen, is gluster only uses the >> >> initial IP address to get the volume details. After that it'll connect >> >> directly to ONE of the servers, so with your 2 storage server case, >> >> 50% chance it won't go to paused state. >> >> >> >> For the VIP, you could consider CTDB or keepelived, or even just using >> >> localhost (as your storage and compute are all on the same machine). >> >> For CTDB, checkout >> >> http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/ >> >> >> >> I have a BZ open regarding gluster VMs going into paused state and not >> >> being resumable, so it's something you should also consider. My case, >> >> switch dies, gluster volume goes away, VMs go into paused state but >> >> can't be resumed. If you lose one server out of a cluster is a >> >> different story though. >> >> https://bugzilla.redhat.com/show_bug.cgi?id=1058300 >> >> >> >> HTH >> >> >> >> On Fri, Jul 4, 2014 at 11:48 AM, Punit Dambiwal <hypu...@gmail.com> >> >> wrote: >> >> > Hi, >> >> > >> >> > Thanks...can you suggest me any good how to/article for the glusterfs >> >> > with >> >> > ovirt... >> >> > >> >> > One strange thing is if i will try both (compute & storage) on the >> >> > same >> >> > node...the below quote not happen.... >> >> > >> >> > --------------------- >> >> > >> >> > Right now, if 10.10.10.2 goes away, all your gluster mounts go away >> >> > and >> >> > your >> >> > VMs get paused because the hypervisors can’t access the storage. Your >> >> > gluster storage is still fine, but ovirt can’t talk to it because >> >> > 10.10.10.2 >> >> > isn’t there. >> >> > --------------------- >> >> > >> >> > Even the 10.10.10.2 goes down...i can still access the gluster mounts >> >> > and no >> >> > VM pause....i can access the VM via ssh...no connection >> >> > failure.....the >> >> > connection drop only in case of SPM goes down and the another node >> >> > will >> >> > elect as SPM(All the running VM's pause in this condition). >> >> > >> >> > >> >> > >> >> > On Fri, Jul 4, 2014 at 4:12 AM, Darrell Budic >> >> > <darrell.bu...@zenfire.com> >> >> > wrote: >> >> >> >> >> >> You need to setup a virtual IP to use as the mount point, most >> >> >> people >> >> >> use >> >> >> keepalived to provide a virtual ip via vrrp for this. Setup >> >> >> something >> >> >> like >> >> >> 10.10.10.10 and use that for your mounts. >> >> >> >> >> >> Right now, if 10.10.10.2 goes away, all your gluster mounts go away >> >> >> and >> >> >> your VMs get paused because the hypervisors can’t access the >> >> >> storage. >> >> >> Your >> >> >> gluster storage is still fine, but ovirt can’t talk to it because >> >> >> 10.10.10.2 >> >> >> isn’t there. >> >> >> >> >> >> If the SPM goes down, it the other hypervisor hosts will elect a new >> >> >> one >> >> >> (under control of the ovirt engine). >> >> >> >> >> >> Same scenarios if storage & compute are on the same server, you >> >> >> still >> >> >> need >> >> >> a vip address for the storage portion to serve as the mount point so >> >> >> it’s >> >> >> not dependent on any one server. >> >> >> >> >> >> -Darrell >> >> >> >> >> >> On Jul 3, 2014, at 1:14 AM, Punit Dambiwal <hypu...@gmail.com> >> >> >> wrote: >> >> >> >> >> >> Hi, >> >> >> >> >> >> I have some HA related concern about glusterfs with Ovirt...let say >> >> >> i >> >> >> have >> >> >> 4 storage node with gluster bricks as below :- >> >> >> >> >> >> 1. 10.10.10.1 to 10.10.10.4 with 2 bricks each and i have >> >> >> distributed >> >> >> replicated architecture... >> >> >> 2. Now attached this gluster storge to ovrit-engine with the >> >> >> following >> >> >> mount point 10.10.10.2/vol1 >> >> >> 3. In my cluster i have 3 hypervisior hosts (10.10.10.5 to >> >> >> 10.10.10.7) >> >> >> SPM >> >> >> is on 10.10.10.5... >> >> >> 4. What happen if 10.10.10.2 will goes down.....can hypervisior host >> >> >> can >> >> >> still access the storage ?? >> >> >> 5. What happen if SPM goes down ??? >> >> >> >> >> >> Note :- What happen for point 4 &5 ,If storage and Compute both >> >> >> working >> >> >> on >> >> >> the same server. >> >> >> >> >> >> Thanks, >> >> >> Punit >> >> >> _______________________________________________ >> >> >> Users mailing list >> >> >> Users@ovirt.org >> >> >> http://lists.ovirt.org/mailman/listinfo/users >> >> >> >> >> >> >> >> > >> >> > >> >> > _______________________________________________ >> >> > Users mailing list >> >> > Users@ovirt.org >> >> > http://lists.ovirt.org/mailman/listinfo/users >> >> > >> > >> > > > _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
