[ovirt-users] probing peers in gluster after installing hosts

[Joop]

Nathanaël Blanchet wrote:
> Hi all,
>
> I created 3 clusters in unique datacenter. I installed my hosts to the 
> first one after activating the gluster service in the cluster tab. A 
> expected otopi installed then the vdsm-gluster rpm and everything were 
> ok for this first cluster.
> The other ones weren't initially gluster ready and I wanted to 
> activate the service after installing the host (so they were without 
> vdsm-gluster package). But checking that item didn't do anything for 
> these hosts, so that I had to manually install vdsm-gluster package. 
> Then, when creating a volume, the UI told me that hosts couldn't 
> communicate. So I had to manually probe them. This leads me to that 
> question : is it an expected behaviour? The whole gluster job 
> (installing appropriated package and probing peers in the cluster) 
> should be done thanks to the UI cluster tab "gluster service".
> A last question : why isn't it possible to probe host on different 
> clusters in the same datacenter, could be very useful.
After checking the checkbox for gluster services you'll need to migrated 
all vms from a host and put it into maintenance then  use the re-install 
link and the needed packages will be downloaded and installed and a peer 
probe will be done. After that reactivate the host and proceed to the 
next one. One caveat found: chkconfig glusterd on isn't executed. You'll 
need to do that by hand and also start the service or restart the server 
while in maintenance mode.

Joop

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