On Fri, Jul 6, 2018 at 5:37 PM, Sandro Bonazzola <sbonazzo@redhat.com> wrote:
2018-07-05 13:16 GMT+02:00 Leo David <leoalex@gmail.com>:Hello everyone,I have two things that i really need to understand regarding storage scaling using gluster.Basically, I am trying to figure out a way to go from 1 single instance to multiple nodes cluster.1. Single node SelfHosted Engine HyperConverged setup - scale instance up to 3 nodes:- the gluster volumes are created as distributed type.- is there a procedure to migate this single-host scenario to multiple nodes, considering that the 3 nodes setup is using replica 3 gluster volumes ?Sahina, a quick check on the oVirt website didn't help me finding the documentation for Leo.Can you please assist?
To move from a single host to multiple host, you can add additional hosts to your cluster via Ovirt. Distribute volume can be changed to a replica 3 volume - but ensure there's no ongoing I/O. The easier process is to add new replica 3 volumes and move your VM disks to it - for the VMs that require HA.
2. 3 Nodes SelfHosted Engine - add more storage nodes- how should I increase the size of the already present replica 3 volumes ?- should the volumes be as distribute-replicated in an environment larger than 3 nodes ?Couldn't find documentation on ovirt.org site, but this should apply to your case: https://access.redhat.com/documentation/en-us/red_ hat_hyperconverged_ infrastructure/1.1/html/ maintaining_red_hat_ hyperconverged_infrastructure/ scaling#scaling_rhhi_by_ adding_additional_volumes_on_ new_nodes Sahina, can you help preparing some documentation for ovirt.org as well?
Sure, contributions are welcome though - Leo, if you feel like pitching in
3. Is there a limit as a maximum number of compute nodes per cluster ?I'm not aware of limits but according to above document I won't go over the 9 nodes in this configuration.Thank you very much !Leo
--Best regards, Leo David
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