Hi,

From what I can remember there is a bit of a difference if you have OSD daemons on SSD or HDD and their capacity... If you have the OSD daemons on HDD the recommendation is to have a bit more than 1G of RAM. If you have OSD on SSD disk then 1G of ram is the minim recommendation ...

Best regards,
Bogdan.

On Tue, Jul 9, 2019 at 7:55 PM Sebastian Wiesner <sebastian.wiesner@tu-dresden.de> wrote:

Hi community,

 

we’re designing our first Ceph cluster here and we’re struggeling with the MON (and also MDS) nodes RAM recommendations. It sais „like 1GB per daemon instance“, but what daemons are meant here? The range is from per MON (MDS) daemon, which would be fairly low, to per OSD daemon, which would be fairly high. Any help would be appreciated.

 

Kind regards

Sebastian

 

-- 

Sebastian Wiesner

IT-Systemadministrator / Application Developer

Department of Operative Processes and Systems (OPS)

 

Dresden University of Technology

Center for Information Services and High Performance Computing (ZIH)

D-01062 Dresden, Germany

 

phone: +49 351 463-37828

fax:        +49 351 463-32164

e-mail:  sebastian.wiesner@tu-dresden.de

WWW: http://www.tu-dresden.de/zih

 

 

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