hey Istvan,
The Hardware Recommendations
<https://docs.ceph.com/en/latest/start/hardware-recommendations/> page
actually has a ton of info on the questions you are asking, did you go
though that one yet?
Without massive overkill, I don't think there's a "bulletproof" design,
as
the actual I/O use cases vary wildly depending on the application.
e.g. you mentioned that "main use case would be k8s users", are there 2000
users that need 500 IOPS each at 100MB/s, OR 5 users that touch the storage
every few minutes and store 10MB of data. These are polar opposites with
orders of magnitude different requirements.
On Fri, Jun 11, 2021 at 10:56 AM Szabo, Istvan (Agoda) <
Istvan.Szabo(a)agoda.com> wrote:
Couple of team want to use cephfs with k8s so the main
use case would be
k8s users.
Istvan Szabo
Senior Infrastructure Engineer
---------------------------------------------------
Agoda Services Co., Ltd.
e: istvan.szabo@agoda.com<mailto:istvan.szabo@agoda.com>
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On 2021. Jun 11., at 17:48, Ansgar Jazdzewski <a.jazdzewski(a)googlemail.com>
wrote:
Hi,
first of all, check the workload you like to have on the filesystem if
you plan to migrate an old one do some proper performance-testing of
the old storage.
the io500 can give some ideas
https://www.vi4io.org/io500/start but it
depends on the use-case of the filesystem
cheers,
Ansgar
Am Fr., 11. Juni 2021 um 10:54 Uhr schrieb Szabo, Istvan (Agoda)
<Istvan.Szabo(a)agoda.com>om>:
Hi,
Can you suggest me what is a good cephfs design? I've never used it, only
rgw and rbd we have, but want to give a try. Howvere in the mail list I saw
a huge amount of issues with cephfs so would like to go with some let's say
bulletproof best practices.
Like separate the mds from mon and mgr?
Need a lot of memory?
Should be on ssd or nvme?
How many cpu/disk ...
Very appreciate it.
Istvan Szabo
Senior Infrastructure Engineer
---------------------------------------------------
Agoda Services Co., Ltd.
e: istvan.szabo@agoda.com<mailto:istvan.szabo@agoda.com>
---------------------------------------------------
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