I currently have a three host hci in rep 3 (no arbiter). 10gbe network and ssds making up the bricks. I’ve wondered what the result of adding three more nodes to expand hci would be. Is there an overall storage performance increase when gluster is expanded like this?

On Sat, Feb 29, 2020 at 4:26 AM Leo David <leoalex@gmail.com> wrote:
Hi,
As a first setup, you can go with a 3 nodes HCI and having the data volume in a replica 3 setup.
Afterwards, if you want to expand HCI ( compute and storage too) you can add sets of 3  nodes, and the data volume will automatically become replicated-distributed. Safely, you can add sets of 3 nodes up to 12 nodes per HCI.
You can also add "compute only nodes" and not extending storage too. This can be done by adding nodes one by one.
As an example, I have an implementation where are 3 hyperconverged nodes, they form a replica 3 volume, and later i have added the 4th node to the cluster which only adds ram and cpu, whilts consuming storage from the existing 3 nodes based volume.
Hope this helps.
Cheers,

Leo


On Fri, Feb 28, 2020, 15:25 Vrgotic, Marko <M.Vrgotic@activevideo.com> wrote:

Hi Strahil,

 

I circled back on your reply while ago regarding oVirt Hyperconverged and more than 3 nodes in cluster:

 

“Hi Marko, I guess  you can use distributed-replicated volumes  and oVirt  cluster with host triplets.”

Initially I understood that its limited to 3Nodes max per HC cluster, but now reading documentation further https://www.ovirt.org/documentation/gluster-hyperconverged/chap-Maintenance_and_Upgrading_Resources.html that does not look like it.

 

Would you be so kind to give me an example or clarify what you meant by “you can use distributed-replicated volumes  and oVirt  cluster with host triplets.” ?

 

Kindly awaiting your reply.

 

 

-----

kind regards/met vriendelijke groeten

 

Marko Vrgotic
ActiveVideo

 

 

 

From: "Vrgotic, Marko" <M.Vrgotic@activevideo.com>
Date: Friday, 11 October 2019 at 08:49
To: Strahil <hunter86_bg@yahoo.com>
Cc: users <users@ovirt.org>
Subject: Re: [ovirt-users] Hyperconverged setup questions

 

Hi Strahil,

 

Thank you.

One maybe stupid question, but significant to me:

Considering i haven’t been playing before with hyperconverged setup in oVirt, is this something i can do from ui cockpit or does it require me first setup an Glusterfs on the Hosts before doing anything via oVirt API or Web interface?

 

Kindly awaiting your reply.

 

Marko

 

Sent from my iPhone



On 11 Oct 2019, at 06:14, Strahil <hunter86_bg@yahoo.com> wrote:

Hi Marko,

I guess  you can use distributed-replicated volumes  and oVirt  cluster with host triplets.

Best Regards,
Strahil Nikolov

On Oct 10, 2019 15:30, "Vrgotic, Marko" <M.Vrgotic@activevideo.com> wrote:

Dear oVirt,

 

Is it possible to add oVirt 3Hosts/Gluster hyperconverged cluster to existing oVirt setup? I need this to achieve Local storage performance, but still have pool of Hypevisors available.

Is it possible to have more than 3Hosts in Hyperconverged setup?

 

I have currently 1Shared Cluster (NFS based storage, where also SHE is hosted) and 2Local Storage clusters.

 

oVirt current version running is 4.3.4.

 

Kindly awaiting your reply.  

 

 

— — —
Met vriendelijke groet / Kind regards,

Marko Vrgotic

ActiveVideo

 

 

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