2016-09-22 16:20 GMT+02:00 Wido den Hollander <wido@xxxxxxxx>:
> Op 22 september 2016 om 16:13 schreef Matteo Dacrema <mdacrema@xxxxxxxx>:
>
>
> To be more precise, the node with different OS are only the OSD nodes.
>
I haven't seen real issues, but a few which I could think of which *potentially* might be a problem:
- Different tcmalloc version
- Different libc versions
- Different kernel behavior with TCP connections
Now, again, I haven't seen any problems, but these are the ones I could think of.
The best thing is to make sure all the Ceph versions are identical.
However, I could recommend to upgrade all machines to the same OS version since it just makes administrating them a bit easier.
We have Ceph cluster with mixed tcmalloc and jemalloc OSD's running diferrent kernel versions. We don't see any problems. Throughput is quite big - 400k PUTs per hour.
--
Jarek
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