nickwitha_k (he/him)

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Joined 1 year ago
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Cake day: July 16th, 2023

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  • I maintained a CEPH cluster a few years back. I can verify that speeds under 10GbE will cause a lot of weird issues. Ideally, you’ll even want a dedicated 10GbE purely for CEPH to do its automatic maintenance stuff and not impact storage clients.

    The PGs is a separate issue. Each PG is like a disk partition. There’s some funky math and guidelines to calculate the ideal number for each pool, based upon disks, OSDs, capacity, replicas, etc. Basically, more PGs means that there are more (but smaller) places for CEPH to store data. This means that balancing over a larger number of nodes and drives is easier. It also means that there’s more metadata to track. So, really, it’s a bit of a balancing act.

















  • nickwitha_k (he/him)@lemmy.sdf.orgtoSelfhosted@lemmy.worldOS recommendations
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    4 months ago

    Honestly, from your description, I’d go with Debian, likely with btrfs. Would be better if you had 3 slots so that you can swap a bad drive but, 2 will work.

    If you want to get adventurous, you can see about a Fedora Atomic distro.

    Previously, I’ve recommended Proxmox but, not sure that I still can at the moment, if they haven’t fixed their kernel funkiness. Right now, I’m back to libvirt.