Thursday, 2016-11-17

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mnaseranyone here running ceph?  i'm trying to see if we're better off adding new OSDs first then increasing PGs or increasing PGs then adding OSDs16:50
mnaseri'm more inclined towards increasing PGs first because I feel like it'll make the addition of new OSDs far smoother, but also the cluster would have less overall iops to do the splitting if i do that16:50
admin0where does nova save/store cgroups ?16:54
admin0like where can I see the limits per VM in terms of iops etc16:54
admin0in the hypervisor16:54
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mnaseradmin0 libvirt?16:56
mnaseradmin0: it sends those limits to libvirt and libvirt enforces them in system/machine or something along those lines16:57
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mnaserso it's probably best to read the libvirt docs from there on https://libvirt.org/cgroups.html16:58
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med_klindgren__, mdorman, VW: how many conntrack connections do you guys allow?21:18
klindgren__~2 million21:19
klindgren__iirc21:19
med_thanks21:19
klindgren__it use to be like 500k but a synflood can bury that in short order21:20
med_nod21:20
med_we're at issues at 500K21:20
med_not sure what's triggering the issue.21:20
klindgren__install contrackd utils and dump a list21:21
klindgren__and see if you see a bunch of the same stuff over and over21:21
klindgren__we also dropped the contrack expiration time for a bunch of stuff as well21:22
klindgren__also this is per hv.  Since we dont run routers, we dont have to doal with connection tracking at a centralized location.  Its spread out across all the compute nodes.21:23
med_nods21:23
med_thanks Kris.21:24
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