Hi, Another update: after 2 more weeks the mgr process grew to ~1.5 GB, which again was expected:
mgr.ceph01.vankui ceph01 *:8443,9283 running (2w) 102s ago 2y 1519M - 16.2.14 fc0182d6cda5 3451f8c6c07e mgr.ceph02.shsinf ceph02 *:8443,9283 running (2w) 102s ago 7M 112M - 16.2.14 fc0182d6cda5 1c3d2d83b6df The cluster is healthy and operating normally, the mgr process is growing slowly. It's still unclear what caused the ballooning and OOM issue under very similar conditions. /Z On Sat, 25 Nov 2023 at 08:31, Zakhar Kirpichenko <zak...@gmail.com> wrote: > Hi, > > A small update: after disabling 'progress' module the active mgr (on > ceph01) used up ~1.3 GB of memory in 3 days, which was expected: > > mgr.ceph01.vankui ceph01 *:8443,9283 running (3d) 9m ago 2y > 1284M - 16.2.14 fc0182d6cda5 3451f8c6c07e > mgr.ceph02.shsinf ceph02 *:8443,9283 running (3d) 9m ago 7M > 374M - 16.2.14 fc0182d6cda5 1c3d2d83b6df > > The cluster is healthy and operating normally. The mgr process is growing > slowly, at roughly about 1-2 MB per 10 minutes give or take, which is not > quick enough to balloon to over 100 GB RSS over several days, which likely > means that whatever triggers the issue happens randomly and quite suddenly. > I'll continue monitoring the mgr and get back with more observations. > > /Z > > On Wed, 22 Nov 2023 at 16:33, Zakhar Kirpichenko <zak...@gmail.com> wrote: > >> Thanks for this. This looks similar to what we're observing. Although we >> don't use the API apart from the usage by Ceph deployment itself - which I >> guess still counts. >> >> /Z >> >> On Wed, 22 Nov 2023, 15:22 Adrien Georget, <adrien.geor...@cc.in2p3.fr> >> wrote: >> >>> Hi, >>> >>> This memory leak with ceph-mgr seems to be due to a change in Ceph >>> 16.2.12. >>> Check this issue : https://tracker.ceph.com/issues/59580 >>> We are also affected by this, with or without containerized services. >>> >>> Cheers, >>> Adrien >>> >>> Le 22/11/2023 à 14:14, Eugen Block a écrit : >>> > One other difference is you use docker, right? We use podman, could it >>> > be some docker restriction? >>> > >>> > Zitat von Zakhar Kirpichenko <zak...@gmail.com>: >>> > >>> >> It's a 6-node cluster with 96 OSDs, not much I/O, mgr . Each node has >>> >> 384 >>> >> GB of RAM, each OSD has a memory target of 16 GB, about 100 GB of >>> >> memory, >>> >> give or take, is available (mostly used by page cache) on each node >>> >> during >>> >> normal operation. Nothing unusual there, tbh. >>> >> >>> >> No unusual mgr modules or settings either, except for disabled >>> progress: >>> >> >>> >> { >>> >> "always_on_modules": [ >>> >> "balancer", >>> >> "crash", >>> >> "devicehealth", >>> >> "orchestrator", >>> >> "pg_autoscaler", >>> >> "progress", >>> >> "rbd_support", >>> >> "status", >>> >> "telemetry", >>> >> "volumes" >>> >> ], >>> >> "enabled_modules": [ >>> >> "cephadm", >>> >> "dashboard", >>> >> "iostat", >>> >> "prometheus", >>> >> "restful" >>> >> ], >>> >> >>> >> /Z >>> >> >>> >> On Wed, 22 Nov 2023, 14:52 Eugen Block, <ebl...@nde.ag> wrote: >>> >> >>> >>> What does your hardware look like memory-wise? Just for comparison, >>> >>> one customer cluster has 4,5 GB in use (middle-sized cluster for >>> >>> openstack, 280 OSDs): >>> >>> >>> >>> PID USER PR NI VIRT RES SHR S %CPU %MEM >>> TIME+ >>> >>> COMMAND >>> >>> 6077 ceph 20 0 6357560 4,522g 22316 S 12,00 1,797 >>> >>> 57022:54 ceph-mgr >>> >>> >>> >>> In our own cluster (smaller than that and not really heavily used) >>> the >>> >>> mgr uses almost 2 GB. So those numbers you have seem relatively >>> small. >>> >>> >>> >>> Zitat von Zakhar Kirpichenko <zak...@gmail.com>: >>> >>> >>> >>> > I've disabled the progress module entirely and will see how it >>> goes. >>> >>> > Otherwise, mgr memory usage keeps increasing slowly, from past >>> >>> experience >>> >>> > it will stabilize at around 1.5-1.6 GB. Other than this event >>> >>> warning, >>> >>> it's >>> >>> > unclear what could have caused random memory ballooning. >>> >>> > >>> >>> > /Z >>> >>> > >>> >>> > On Wed, 22 Nov 2023 at 13:07, Eugen Block <ebl...@nde.ag> wrote: >>> >>> > >>> >>> >> I see these progress messages all the time, I don't think they >>> cause >>> >>> >> it, but I might be wrong. You can disable it just to rule that >>> out. >>> >>> >> >>> >>> >> Zitat von Zakhar Kirpichenko <zak...@gmail.com>: >>> >>> >> >>> >>> >> > Unfortunately, I don't have a full stack trace because there's >>> no >>> >>> crash >>> >>> >> > when the mgr gets oom-killed. There's just the mgr log, which >>> >>> looks >>> >>> >> > completely normal until about 2-3 minutes before the oom-kill, >>> >>> when >>> >>> >> > tmalloc warnings show up. >>> >>> >> > >>> >>> >> > I'm not sure that it's the same issue that is described in the >>> >>> tracker. >>> >>> >> We >>> >>> >> > seem to have some stale "events" in the progress module though: >>> >>> >> > >>> >>> >> > Nov 21 14:56:30 ceph01 bash[3941523]: debug >>> >>> 2023-11-21T14:56:30.718+0000 >>> >>> >> > 7f4bb19ef700 0 [progress WARNING root] complete: ev >>> >>> >> > cacc4230-75ee-4892-b8fd-a19fec8f9f66 does not exist >>> >>> >> > Nov 21 14:56:30 ceph01 bash[3941523]: debug >>> >>> 2023-11-21T14:56:30.718+0000 >>> >>> >> > 7f4bb19ef700 0 [progress WARNING root] complete: ev >>> >>> >> > 44824331-3f6b-45c4-b925-423d098c3c76 does not exist >>> >>> >> > Nov 21 14:56:30 ceph01 bash[3941523]: debug >>> >>> 2023-11-21T14:56:30.718+0000 >>> >>> >> > 7f4bb19ef700 0 [progress WARNING root] complete: ev >>> >>> >> > 0139bc54-ae42-4483-b278-851d77f23f9f does not exist >>> >>> >> > Nov 21 14:56:30 ceph01 bash[3941523]: debug >>> >>> 2023-11-21T14:56:30.718+0000 >>> >>> >> > 7f4bb19ef700 0 [progress WARNING root] complete: ev >>> >>> >> > f9d6c20e-b8d8-4625-b9cf-84da1244c822 does not exist >>> >>> >> > Nov 21 14:56:30 ceph01 bash[3941523]: debug >>> >>> 2023-11-21T14:56:30.718+0000 >>> >>> >> > 7f4bb19ef700 0 [progress WARNING root] complete: ev >>> >>> >> > 1486b26d-2a23-4416-a864-2cbb0ecf1429 does not exist >>> >>> >> > Nov 21 14:56:30 ceph01 bash[3941523]: debug >>> >>> 2023-11-21T14:56:30.718+0000 >>> >>> >> > 7f4bb19ef700 0 [progress WARNING root] complete: ev >>> >>> >> > 7f14d01c-498c-413f-b2ef-05521050190a does not exist >>> >>> >> > Nov 21 14:57:35 ceph01 bash[3941523]: debug >>> >>> 2023-11-21T14:57:35.950+0000 >>> >>> >> > 7f4bb19ef700 0 [progress WARNING root] complete: ev >>> >>> >> > 48cbd97f-82f7-4b80-8086-890fff6e0824 does not exist >>> >>> >> > >>> >>> >> > I tried clearing them but they keep showing up. I am wondering >>> if >>> >>> these >>> >>> >> > missing events can cause memory leaks over time. >>> >>> >> > >>> >>> >> > /Z >>> >>> >> > >>> >>> >> > On Wed, 22 Nov 2023 at 11:12, Eugen Block <ebl...@nde.ag> >>> wrote: >>> >>> >> > >>> >>> >> >> Do you have the full stack trace? The pastebin only contains >>> the >>> >>> >> >> "tcmalloc: large alloc" messages (same as in the tracker >>> issue). >>> >>> Maybe >>> >>> >> >> comment in the tracker issue directly since Radek asked for >>> >>> someone >>> >>> >> >> with a similar problem in a newer release. >>> >>> >> >> >>> >>> >> >> Zitat von Zakhar Kirpichenko <zak...@gmail.com>: >>> >>> >> >> >>> >>> >> >> > Thanks, Eugen. It is similar in the sense that the mgr is >>> >>> getting >>> >>> >> >> > OOM-killed. >>> >>> >> >> > >>> >>> >> >> > It started happening in our cluster after the upgrade to >>> >>> 16.2.14. >>> >>> We >>> >>> >> >> > haven't had this issue with earlier Pacific releases. >>> >>> >> >> > >>> >>> >> >> > /Z >>> >>> >> >> > >>> >>> >> >> > On Tue, 21 Nov 2023, 21:53 Eugen Block, <ebl...@nde.ag> >>> wrote: >>> >>> >> >> > >>> >>> >> >> >> Just checking it on the phone, but isn’t this quite similar? >>> >>> >> >> >> >>> >>> >> >> >> https://tracker.ceph.com/issues/45136 >>> >>> >> >> >> >>> >>> >> >> >> Zitat von Zakhar Kirpichenko <zak...@gmail.com>: >>> >>> >> >> >> >>> >>> >> >> >> > Hi, >>> >>> >> >> >> > >>> >>> >> >> >> > I'm facing a rather new issue with our Ceph cluster: from >>> >>> time >>> >>> to >>> >>> >> time >>> >>> >> >> >> > ceph-mgr on one of the two mgr nodes gets oom-killed after >>> >>> >> consuming >>> >>> >> >> over >>> >>> >> >> >> > 100 GB RAM: >>> >>> >> >> >> > >>> >>> >> >> >> > [Nov21 15:02] tp_osd_tp invoked oom-killer: >>> >>> >> >> >> > gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, >>> >>> oom_score_adj=0 >>> >>> >> >> >> > [ +0.000010] oom_kill_process.cold+0xb/0x10 >>> >>> >> >> >> > [ +0.000002] [ pid ] uid tgid total_vm rss >>> >>> >> pgtables_bytes >>> >>> >> >> >> > swapents oom_score_adj name >>> >>> >> >> >> > [ +0.000008] >>> >>> >> >> >> > >>> >>> >> >> >> >>> >>> >> >> >>> >>> >> >>> >>> >>> oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=504d37b566d9fd442d45904a00584b4f61c93c5d49dc59eb1c948b3d1c096907,mems_allowed=0-1,global_oom,task_memcg=/docker/3826be8f9115479117ddb8b721ca57585b2bdd58a27c7ed7b38e8d83eb795957,task=ceph-mgr,pid=3941610,uid=167 >>> >>> >>> >>> >>> >> >> >> > [ +0.000697] Out of memory: Killed process 3941610 >>> >>> (ceph-mgr) >>> >>> >> >> >> > total-vm:146986656kB, anon-rss:125340436kB, file-rss:0kB, >>> >>> >> >> shmem-rss:0kB, >>> >>> >> >> >> > UID:167 pgtables:260356kB oom_score_adj:0 >>> >>> >> >> >> > [ +6.509769] oom_reaper: reaped process 3941610 >>> >>> (ceph-mgr), now >>> >>> >> >> >> > anon-rss:0kB, file-rss:0kB, shmem-rss:0kB >>> >>> >> >> >> > >>> >>> >> >> >> > The cluster is stable and operating normally, there's >>> >>> nothing >>> >>> >> unusual >>> >>> >> >> >> going >>> >>> >> >> >> > on before, during or after the kill, thus it's unclear >>> what >>> >>> causes >>> >>> >> the >>> >>> >> >> >> mgr >>> >>> >> >> >> > to balloon, use all RAM and get killed. Systemd logs >>> >>> aren't very >>> >>> >> >> helpful: >>> >>> >> >> >> > they just show normal mgr operations until it fails to >>> >>> allocate >>> >>> >> memory >>> >>> >> >> >> and >>> >>> >> >> >> > gets killed: https://pastebin.com/MLyw9iVi >>> >>> >> >> >> > >>> >>> >> >> >> > The mgr experienced this issue several times in the last 2 >>> >>> months, >>> >>> >> and >>> >>> >> >> >> the >>> >>> >> >> >> > events don't appear to correlate with any other events in >>> >>> the >>> >>> >> cluster >>> >>> >> >> >> > because basically nothing else happened at around those >>> >>> times. >>> >>> How >>> >>> >> >> can I >>> >>> >> >> >> > investigate this and figure out what's causing the mgr to >>> >>> consume >>> >>> >> all >>> >>> >> >> >> > memory and get killed? >>> >>> >> >> >> > >>> >>> >> >> >> > I would very much appreciate any advice! >>> >>> >> >> >> > >>> >>> >> >> >> > Best regards, >>> >>> >> >> >> > Zakhar >>> >>> >> >> >> > _______________________________________________ >>> >>> >> >> >> > ceph-users mailing list -- ceph-users@ceph.io >>> >>> >> >> >> > To unsubscribe send an email to ceph-users-le...@ceph.io >>> >>> >> >> >> >>> >>> >> >> >> >>> >>> >> >> >> _______________________________________________ >>> >>> >> >> >> ceph-users mailing list -- ceph-users@ceph.io >>> >>> >> >> >> To unsubscribe send an email to ceph-users-le...@ceph.io >>> >>> >> >> >> >>> >>> >> >> >>> >>> >> >> >>> >>> >> >> >>> >>> >> >> >>> >>> >> >>> >>> >> >>> >>> >> >>> >>> >> >>> >>> >>> >>> >>> >>> >>> >>> >>> > >>> > >>> > _______________________________________________ >>> > ceph-users mailing list -- ceph-users@ceph.io >>> > To unsubscribe send an email to ceph-users-le...@ceph.io >>> >>> _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
