Hello, On Tue, 26 Jul 2016 12:16:35 +1000 Goncalo Borges wrote: > Hi Brad > > Thanks for replying. > > Answers inline. > > > >> I am a bit confused about the 'unchachable' message we get in Jewel 10.2.2 > >> when I try to change some cluster configs. > >> > >> For example: > >> > >> 1./ if I try to change mon_osd_nearfull_ratio from 0.85 to 0.90, I get > >> > >> # ceph tell mon.* injectargs "--mon_osd_nearfull_ratio 0.90" > >> mon.rccephmon1: injectargs:mon_osd_nearfull_ratio = '0.9' > >> (unchangeable) > >> mon.rccephmon3: injectargs:mon_osd_nearfull_ratio = '0.9' > >> (unchangeable) > >> mon.rccephmon2: injectargs:mon_osd_nearfull_ratio = '0.9' > >> (unchangeable) > > This is telling you that this variable has no observers (i.e. nothing monitors > > it dynamically) so changing it at runtime has no effect. IOW it is read at > > start-up and not referred to again after that IIUC. > > > >> but the 0.85 default values continues to be showed in > >> > >> ceph --show-config --conf /dev/null | grep mon_osd_nearfull_ratio > >> mon_osd_nearfull_ratio = 0.85 > > Try something like the following. > > > > $ ceph daemon mon.a config show|grep mon_osd_nearfull_ratio > > > >> and I continue to have health warnings regarding near full osds. > > So the actual config value has been changed but has no affect and will not > > persist. IOW, this value needs to be modified in the conf file and the daemon > > restarted. > > > >> > >> 2./ If I change in the ceph.conf and restart services, I get the same > >> behaviour as in 1./ However, if I check the daemon configuration, I see: > > Please clarify what you mean by "the same behaviour"? > > So, in my ceph.conf I've set 'mon osd nearfull ratio = 0.90' and > restarted mon and osd (not sure if those were needed) daemons everywhere. > > After restarting, I am still getting the health warnings regarding near > full osds above 85%. If the new value was active, I should not get such > warnings. > > > > >> # ceph daemon mon.rccephmon2 config show | grep mon_osd_nearfull_ratio > >> "mon_osd_nearfull_ratio": "0.9", > > Use the daemon command I showed above. > > Isn't it the same as you suggested? That was run after restarting > services so it is still unclear to me why the new value is not picked up > and why running 'ceph --show-config --conf /dev/null | grep > mon_osd_nearfull_ratio' still shows 0.85 > Don't use that, do something like: ceph --admin-daemon /var/run/ceph/ceph-mon.<hostname>.asok config show |grep full to get running values (on a MON host obviously). > Maybe a restart if services is not what has to be done but a stop/start > instead? > Restart should be be OK, but then again with all systemd transition fun, who knows. Christian > Cheers > Goncalo > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Christian Balzer Network/Systems Engineer chibi@xxxxxxx Global OnLine Japan/Rakuten Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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