We're looking for the multiple mds daemons to be active in zone A and standby(-replay) in zone B. This scenario would also benefit people who have more powerfull hardware in zone A than zone B. Kind regards, Sake > Op 31-10-2024 15:50 CET schreef Adam King <adking@xxxxxxxxxx>: > > > Just noticed this thread. A couple questions. Is what we want to have MDS > daemons in say zone A and zone B, but the ones in zone A are prioritized to > be active and ones in zone B remain as standby unless absolutely necessary > (all the ones in zone A are down) or is it that we want to have some subset > of a pool of hosts in zone A and zone B have mds daemons? If it's the > former, cephadm doesn't do it. The followup question in that case would be > if there is some way to tell the mds daemons to prioritize certain ones to > be active over others? If there is, I didn't know about it, but I assume > we'd need that functionality to get that case to work. > > On Tue, Oct 29, 2024 at 5:34 PM Gregory Farnum <gfarnum@xxxxxxxxxx> wrote: > > > No, unfortunately this needs to be done at a higher level and is not > > included in Ceph right now. Rook may be able to do this, but I don't think > > cephadm does. > > Adam, is there some way to finagle this with pod placement rules (ie, > > tagging nodes as mds and mds-standby, and then assigning special mds config > > info to corresponding pods)? > > -Greg > > > > On Tue, Oct 29, 2024 at 12:46 PM Sake Ceph <ceph@xxxxxxxxxxx> wrote: > > > >> I hope someone of the development team can share some light on this. Will > >> search the tracker if some else made a request about this. > >> > >> > Op 29-10-2024 16:02 CET schreef Frédéric Nass < > >> frederic.nass@xxxxxxxxxxxxxxxx>: > >> > > >> > > >> > Hi, > >> > > >> > I'm not aware of any service settings that would allow that. > >> > > >> > You'll have to monitor each MDS state and restart any non-local active > >> MDSs to reverse roles. > >> > > >> > Regards, > >> > Frédéric. > >> > > >> > ----- Le 29 Oct 24, à 14:06, Sake Ceph ceph@xxxxxxxxxxx a écrit : > >> > > >> > > Hi all > >> > > We deployed successfully a stretched cluster and all is working fine. > >> But is it > >> > > possible to assign the active MDS services in one DC and the > >> standby-replay in > >> > > the other? > >> > > > >> > > We're running 18.2.4, deployed via cephadm. Using 4 MDS servers with > >> 2 active > >> > > MDS on pinnend ranks and 2 in standby-replay mode. > >> > > _______________________________________________ > >> > > 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 > >> _______________________________________________ > >> 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 _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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