I try to address these ideas in https://www.amazon.com/Learning-Ceph-scalable-reliable-solution-ebook/dp/B01NBP2D9I though as with any tech topic the details change over time. It's difficult to interpret the table the OP included, but I think it shows a 3 node cluster. When you only have 3 nodes, you don't really have a choice about segregating daemons. Since you mention VMs, should we assume that this is just a sandbox cluster? > On Nov 30, 2023, at 13:39, Janne Johansson <icepic.dz@xxxxxxxxx> wrote: > > Den tors 30 nov. 2023 kl 17:35 skrev Francisco Arencibia Quesada < > arencibia.francisco@xxxxxxxxx>: > >> Hello again guys, >> >> Can you recommend me a book that explains best practices with Ceph, >> for example is it okay to have mon,mgr, osd in the same virtual machine, >> > > OSDs can need very much RAM during recovery, after crashes and things like > that. In such a case, it might be suboptimal to cohost other services on > that host, since those would be starved for memory if/when the OSD balloons > to huge sizes for a short while. > > As for recommendations, this needs more information on what to achieve, > what budget you have, what other choices one must make (OS, virtualization > or not) and so on. There is no one single solution for "storage", not even > just within ceph. > > -- > May the most significant bit of your life be positive. > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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