[ovirt-users] Re: HCI with 5 node quest

2020-11-03 Thread Simon Scott
Many thanks Strahil 

> On 3 Nov 2020, at 16:52, Strahil Nikolov  wrote:
> 
> Usually it is best practice to have the cluster expanded by a multiple of 
> '3' because the gluster volume is of type 'replica 3' or 'replica 3 arbiter 
> 1'. Such volumes can only be expanded by 3 bricks and the best practice is to 
> have one node per brick.
> 
> Yet, the linux world gives freedom , so you can use 5 nodes like this:
> nodeA - data, volume1
> nodeB - data ,volume1
> nodeC - arbiter, volume1 ; arbiter , volume2
> nodeD - data, volume2
> nodeE - data, volume2
> 
> Best Regards,
> Strahil Nikolov 
> 
> 
> 
> 
> 
> 
> В неделя, 1 ноември 2020 г., 23:12:21 Гринуич+2, Simon Scott 
>  написа: 
> 
> 
> 
> 
> 
> Apologies Strahill,
> 
> I don’t think my question was very clear - my fault.
> 
> In all the documentation on HCI that I’ve read, it clearly states the the 3 
> node HCI model can only be expanded in multiples of 3 nodes, i.e. 3, 6, 9, 12.
> 
> I don’t know if I missed a basic explanation somewhere but is there any 
> reason I can’t have a 5 node cluster with multiple Gluster Replica 3 volumes 
> utilising any of the 5 nodes in the same Gluster Peer Group?
> 
> Kind Regards
> 
> Shimme
> 
>> On 1 Nov 2020, at 17:17, Strahil Nikolov  wrote:
>> 
>> We do not know.
>> Nodes 3,4,5 need to be in the same gluster network like 1,2,3 .
>> Once you create your bricks (inode size >= 512) and mount them permanently, 
>> you can create an extra volume or expand the current volumes.
>> 
>> Once you have prepared the nodes, you can add them from UI.
>> 
>> Best Regards,
>> Strahil Nikolov
>> 
>> 
>> 
>> 
>> 
>> 
>> В неделя, 1 ноември 2020 г., 12:44:40 Гринуич+2, si...@justconnect.ie 
>>  написа:
>> 
>> 
>> 
>> 
>> 
>> I have a 3 node HCI setup with 2 Replica 3 volumes using nodes 1, 2 & 3 and 
>> have added 2 additional Compute nodes to this Cluster.
>> 
>> What is stopping me from adding nodes 4 & 5 as Gluster Peers and creating a 
>> glusterfs Replica 3 Volume using nodes 3, 4 & 5?
>> 
>> 
>> Shimme
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[ovirt-users] Re: HCI with 5 node quest

2020-11-03 Thread Strahil Nikolov via Users
Usually it is best practice to have the cluster expanded by a multiple of '3' 
because the gluster volume is of type 'replica 3' or 'replica 3 arbiter 1'. 
Such volumes can only be expanded by 3 bricks and the best practice is to have 
one node per brick.

Yet, the linux world gives freedom , so you can use 5 nodes like this:
nodeA - data, volume1
nodeB - data ,volume1
nodeC - arbiter, volume1 ; arbiter , volume2
nodeD - data, volume2
nodeE - data, volume2

Best Regards,
Strahil Nikolov 






В неделя, 1 ноември 2020 г., 23:12:21 Гринуич+2, Simon Scott 
 написа: 





Apologies Strahill,

I don’t think my question was very clear - my fault.

In all the documentation on HCI that I’ve read, it clearly states the the 3 
node HCI model can only be expanded in multiples of 3 nodes, i.e. 3, 6, 9, 12.

I don’t know if I missed a basic explanation somewhere but is there any reason 
I can’t have a 5 node cluster with multiple Gluster Replica 3 volumes utilising 
any of the 5 nodes in the same Gluster Peer Group?

Kind Regards

Shimme

> On 1 Nov 2020, at 17:17, Strahil Nikolov  wrote:
> 
> We do not know.
> Nodes 3,4,5 need to be in the same gluster network like 1,2,3 .
> Once you create your bricks (inode size >= 512) and mount them permanently, 
> you can create an extra volume or expand the current volumes.
> 
> Once you have prepared the nodes, you can add them from UI.
> 
> Best Regards,
> Strahil Nikolov
> 
> 
> 
> 
> 
> 
> В неделя, 1 ноември 2020 г., 12:44:40 Гринуич+2, si...@justconnect.ie 
>  написа:
> 
> 
> 
> 
> 
> I have a 3 node HCI setup with 2 Replica 3 volumes using nodes 1, 2 & 3 and 
> have added 2 additional Compute nodes to this Cluster.
> 
> What is stopping me from adding nodes 4 & 5 as Gluster Peers and creating a 
> glusterfs Replica 3 Volume using nodes 3, 4 & 5?
> 
> 
> Shimme
> ___
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> To unsubscribe send an email to users-le...@ovirt.org
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[ovirt-users] Re: HCI with 5 node quest

2020-11-01 Thread Simon Scott
Apologies Strahill,

I don’t think my question was very clear - my fault.

In all the documentation on HCI that I’ve read, it clearly states the the 3 
node HCI model can only be expanded in multiples of 3 nodes, i.e. 3, 6, 9, 12.

I don’t know if I missed a basic explanation somewhere but is there any reason 
I can’t have a 5 node cluster with multiple Gluster Replica 3 volumes utilising 
any of the 5 nodes in the same Gluster Peer Group?

Kind Regards

Shimme

> On 1 Nov 2020, at 17:17, Strahil Nikolov  wrote:
> 
> We do not know.
> Nodes 3,4,5 need to be in the same gluster network like 1,2,3 .
> Once you create your bricks (inode size >= 512) and mount them permanently, 
> you can create an extra volume or expand the current volumes.
> 
> Once you have prepared the nodes, you can add them from UI.
> 
> Best Regards,
> Strahil Nikolov
> 
> 
> 
> 
> 
> 
> В неделя, 1 ноември 2020 г., 12:44:40 Гринуич+2, si...@justconnect.ie 
>  написа:
> 
> 
> 
> 
> 
> I have a 3 node HCI setup with 2 Replica 3 volumes using nodes 1, 2 & 3 and 
> have added 2 additional Compute nodes to this Cluster.
> 
> What is stopping me from adding nodes 4 & 5 as Gluster Peers and creating a 
> glusterfs Replica 3 Volume using nodes 3, 4 & 5?
> 
> 
> Shimme
> ___
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[ovirt-users] Re: HCI with 5 node quest

2020-11-01 Thread Strahil Nikolov via Users
We do not know.
Nodes 3,4,5 need to be in the same gluster network like 1,2,3 .
Once you create your bricks (inode size >= 512) and mount them permanently, you 
can create an extra volume or expand the current volumes.

Once you have prepared the nodes, you can add them from UI.

Best Regards,
Strahil Nikolov






В неделя, 1 ноември 2020 г., 12:44:40 Гринуич+2, si...@justconnect.ie 
 написа: 





I have a 3 node HCI setup with 2 Replica 3 volumes using nodes 1, 2 & 3 and 
have added 2 additional Compute nodes to this Cluster.

What is stopping me from adding nodes 4 & 5 as Gluster Peers and creating a 
glusterfs Replica 3 Volume using nodes 3, 4 & 5?


Shimme
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