[ovirt-users] Gluster and oVirt 4.0 questions

[Alexander Wels]

On Thursday, March 30, 2017 3:53:47 AM EDT Liron Aravot wrote:
> Hi Jim, please see inline
> 
> On Thu, Mar 30, 2017 at 4:08 AM, Jim Kusznir <jim at palousetech.com> wrote:
> > hello:
> > 
> > I've been running my ovirt Version 4.0.5.5-1.el7.centos cluster for a
> > while now, and am now revisiting some aspects of it for ensuring that I
> > have good reliability.
> > 
> > My cluster is a 3 node cluster, with gluster nodes running on each node.
> > After running my cluster a bit, I'm realizing I didn't do a very optimal
> > job of allocating the space on my disk to the different gluster mount
> > points.  Fortunately, they were created with LVM, so I'm hoping that I can
> > resize them without much trouble.
> > 
> > I have a domain for iso, domain for export, and domain for storage, all
> > thin provisioned; then a domain for the engine, not thin provisioned.  I'd
> > like to expand the storage domain, and possibly shrink the engine domain
> > and make that space also available to the main storage domain.  Is it as
> > simple as expanding the LVM partition, or are there more steps involved?
> > Do I need to take the node offline?
> 
> I didn't understand completely that part - what is the difference between
> the domain for storage and the domain for engine you mentioned?
> 
> > second, I've noticed that the first two nodes seem to have a full copy of
> > the data (the disks are in use), but the 3rd node appears to not be using
> > any of its storage space...It is participating in the gluster cluster,
> > though.
> > 
> > Third, currently gluster shares the same network as the VM networks.  I'd
> > like to put it on its own network.  I'm not sure how to do this, as when I
> > tried to do it at install time, I never got the cluster to come online; I
> > had to make them share the same network to make that work.
> 
> I'm adding Sahina who may shed some light on the gluster question, I'd try
> on the gluster mailing list as well.
> 
> > Ovirt questions:
> > I've noticed that recently, I don't appear to be getting software updates
> > anymore.  I used to get update available notifications on my nodes every
> > few days; I haven't seen one for a couple weeks now.  is something wrong?
> > 
> > I have a windows 10 x64 VM.  I get a warning that my VM type does not
> > match the installed OS.  All works fine, but I've quadrouple-checked that
> > it does match.  Is this a known bug?

Do you have the ovirt-guest-agent installed and running on that windows VM? If 
not that is highly likely the cause for the warning.

> 
> Arik, any info on that?
> 
> > I have a UPS that all three nodes and the networking are on.  It is a USB
> > UPS.  How should I best integrate monitoring in?  I could put a raspberry
> > pi up and then run NUT or similar on it, but is there a "better" way with
> > oVirt?
> > 
> > Thanks!
> > --Jim
> > 
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