You can also prepare a crush rule to put only 2 chunks per host. That
way you can still operate cluster even if a single host is down.
Regards,
On 3/25/21 7:53 PM, Martin Verges wrote:
You can change the crush rule to be OSD instead of HOST specific. That way
Ceph will put a chunk per OSD and multiple Chunks per Host.
Please keep in mind, that will cause an outage if one of your hosts are
offline.
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On Thu, 25 Mar 2021 at 19:02, by morphin <morphinwithyou@xxxxxxxxx> wrote:
Hello.
I have 5 node Cluster in A datacenter. Also I have same 5 node in B
datacenter.
They're gonna be 10 node 8+2 EC cluster for backup but I need to add
the 5 node later.
I have to sync my S3 data with multisite on the 5 node cluster in A
datacenter and move
them to the B and add the other 5 node to the same cluster.
The question is: Can I create 8+2 ec pool on 5 node cluster and add
the 5 node later? How can I rebalance the data after that?
Or is there any better solution in my case? what should I do?
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