You can disable that beacon by increasing mds_beacon_grace to 300 or
600. This will stop the mon from failing that mds over to a standby.
I don't know if that is set on the mon or mgr, so I usually set it on both.
(You might as well disable the standby too -- no sense in something
failing back and forth between two mdses).
Next -- looks like your mds is in active:replay. Is it doing anything?
Is it using lots of CPU/RAM? If you increase debug_mds do you see some
progress?
-- dan
On Thu, Oct 22, 2020 at 2:01 PM David C <dcsysengineer@xxxxxxxxx> wrote:
>
> Hi All
>
> My main CephFS data pool on a Luminous 12.2.10 cluster hit capacity
> overnight, metadata is on a separate pool which didn't hit capacity but the
> filesystem stopped working which I'd expect. I increased the osd full-ratio
> to give me some breathing room to get some data deleted once the filesystem
> is back online. When I attempt to restart the MDS service, I see the usual
> stuff I'd expect in the log but then:
>
> heartbeat_map is_healthy 'MDSRank' had timed out after 15
>
>
> Followed by:
>
> mds.beacon.hostnamecephssd01 Skipping beacon heartbeat to monitors (last
> > acked 4.00013s ago); MDS internal heartbeat is not healthy!
>
>
> Eventually I get:
>
> >
> > mds.beacon.hostnamecephssd01 is_laggy 29.372 > 15 since last acked beacon
> > mds.0.90884 skipping upkeep work because connection to Monitors appears
> > laggy
> > mds.hostnamecephssd01 Updating MDS map to version 90885 from mon.0
> > mds.beacon.hostnamecephssd01 MDS is no longer laggy
>
>
> The "MDS is no longer laggy" appears to be where the service fails
>
> Meanwhile a ceph -s is showing:
>
> >
> > cluster:
> > id: 5c5998fd-dc9b-47ec-825e-beaba66aad11
> > health: HEALTH_ERR
> > 1 filesystem is degraded
> > insufficient standby MDS daemons available
> > 67 backfillfull osd(s)
> > 11 nearfull osd(s)
> > full ratio(s) out of order
> > 2 pool(s) backfillfull
> > 2 pool(s) nearfull
> > 6 scrub errors
> > Possible data damage: 5 pgs inconsistent
> > services:
> > mon: 3 daemons, quorum hostnameceph01,hostnameceph02,hostnameceph03
> > mgr: hostnameceph03(active), standbys: hostnameceph02, hostnameceph01
> > mds: cephfs-1/1/1 up {0=hostnamecephssd01=up:replay}
> > osd: 172 osds: 161 up, 161 in
> > data:
> > pools: 5 pools, 8384 pgs
> > objects: 76.25M objects, 124TiB
> > usage: 373TiB used, 125TiB / 498TiB avail
> > pgs: 8379 active+clean
> > 5 active+clean+inconsistent
> > io:
> > client: 676KiB/s rd, 0op/s rd, 0op/s w
>
>
> The 5 pgs inconsistent is not a new issue, that is from past scrubs, just
> haven't gotten around to manually clearing them although I suppose they
> could be related to my issue
>
> The cluster has no clients connected
>
> I did notice in the ceph.log, some OSDs that are in the same host as the
> MDS service briefly went down when trying to restart the MDS but examining
> the logs of those particular OSDs isn't showing any glaring issues.
>
> Full MDS log at debug 5 (can go higher if needed):
>
> 2020-10-22 11:27:10.987652 7f6f696f5240 0 set uid:gid to 167:167
> (ceph:ceph)
> 2020-10-22 11:27:10.987669 7f6f696f5240 0 ceph version 12.2.10
> (177915764b752804194937482a39e95e0ca3de94) luminous (stable), process
> ceph-mds, pid 2022582
> 2020-10-22 11:27:10.990567 7f6f696f5240 0 pidfile_write: ignore empty
> --pid-file
> 2020-10-22 11:27:11.027981 7f6f62616700 1 mds.hostnamecephssd01 Updating
> MDS map to version 90882 from mon.0
> 2020-10-22 11:27:15.097957 7f6f62616700 1 mds.hostnamecephssd01 Updating
> MDS map to version 90883 from mon.0
> 2020-10-22 11:27:15.097989 7f6f62616700 1 mds.hostnamecephssd01 Map has
> assigned me to become a standby
> 2020-10-22 11:27:15.101071 7f6f62616700 1 mds.hostnamecephssd01 Updating
> MDS map to version 90884 from mon.0
> 2020-10-22 11:27:15.105310 7f6f62616700 1 mds.0.90884 handle_mds_map i am
> now mds.0.90884
> 2020-10-22 11:27:15.105316 7f6f62616700 1 mds.0.90884 handle_mds_map state
> change up:boot --> up:replay
> 2020-10-22 11:27:15.105325 7f6f62616700 1 mds.0.90884 replay_start
> 2020-10-22 11:27:15.105333 7f6f62616700 1 mds.0.90884 recovery set is
> 2020-10-22 11:27:15.105344 7f6f62616700 1 mds.0.90884 waiting for osdmap
> 73745 (which blacklists prior instance)
> 2020-10-22 11:27:15.149092 7f6f5be09700 0 mds.0.cache creating system
> inode with ino:0x100
> 2020-10-22 11:27:15.149693 7f6f5be09700 0 mds.0.cache creating system
> inode with ino:0x1
> 2020-10-22 11:27:41.021708 7f6f63618700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:27:43.029290 7f6f5f610700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:27:43.029297 7f6f5f610700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 4.00013s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:27:45.866711 7f6f5fe11700 1 heartbeat_map reset_timeout
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:01.021965 7f6f63618700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:03.029862 7f6f5f610700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:03.029885 7f6f5f610700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 4.00113s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:28:06.022033 7f6f63618700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:07.029955 7f6f5f610700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:07.029961 7f6f5f610700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 8.00126s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:28:11.022099 7f6f63618700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:11.030024 7f6f5f610700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:11.030028 7f6f5f610700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 12.0014s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:28:15.030092 7f6f5f610700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:15.030099 7f6f5f610700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 16.0015s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:28:16.022165 7f6f63618700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:19.030163 7f6f5f610700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:19.030169 7f6f5f610700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 20.0016s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:28:21.022231 7f6f63618700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:23.030233 7f6f5f610700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:23.030241 7f6f5f610700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 24.0008s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:28:26.022295 7f6f63618700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:27.030305 7f6f5f610700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:27.030311 7f6f5f610700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 28.0009s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:28:28.401161 7f6f5fe11700 1 heartbeat_map reset_timeout
> 'MDSRank' had timed out after 15
> 2020-10-22 11:28:28.401168 7f6f5fe11700 1 mds.beacon.hostnamecephssd01
> is_laggy 29.372 > 15 since last acked beacon
> 2020-10-22 11:28:28.401177 7f6f5fe11700 1 mds.0.90884 skipping upkeep work
> because connection to Monitors appears laggy
> 2020-10-22 11:28:28.401187 7f6f62616700 1 mds.hostnamecephssd01 Updating
> MDS map to version 90885 from mon.0
> 2020-10-22 11:28:31.659817 7f6f64595700 0 mds.beacon.hostnamecephssd01
> MDS is no longer laggy
> 2020-10-22 11:36:15.880009 7f88ee4ac240 0 set uid:gid to 167:167
> (ceph:ceph)
> 2020-10-22 11:36:15.880026 7f88ee4ac240 0 ceph version 12.2.10
> (177915764b752804194937482a39e95e0ca3de94) luminous (stable), process
> ceph-mds, pid 2022663
> 2020-10-22 11:36:15.883118 7f88ee4ac240 0 pidfile_write: ignore empty
> --pid-file
> 2020-10-22 11:36:15.921200 7f88e73cd700 1 mds.hostnamecephssd01 Updating
> MDS map to version 90887 from mon.2
> 2020-10-22 11:36:20.270298 7f88e73cd700 1 mds.hostnamecephssd01 Updating
> MDS map to version 90888 from mon.2
> 2020-10-22 11:36:20.270329 7f88e73cd700 1 mds.hostnamecephssd01 Map has
> assigned me to become a standby
> 2020-10-22 11:36:20.272917 7f88e73cd700 1 mds.hostnamecephssd01 Updating
> MDS map to version 90889 from mon.2
> 2020-10-22 11:36:20.277063 7f88e73cd700 1 mds.0.90889 handle_mds_map i am
> now mds.0.90889
> 2020-10-22 11:36:20.277069 7f88e73cd700 1 mds.0.90889 handle_mds_map state
> change up:boot --> up:replay
> 2020-10-22 11:36:20.277079 7f88e73cd700 1 mds.0.90889 replay_start
> 2020-10-22 11:36:20.277086 7f88e73cd700 1 mds.0.90889 recovery set is
> 2020-10-22 11:36:20.277096 7f88e73cd700 1 mds.0.90889 waiting for osdmap
> 73746 (which blacklists prior instance)
> 2020-10-22 11:36:20.322318 7f88e0bc0700 0 mds.0.cache creating system
> inode with ino:0x100
> 2020-10-22 11:36:20.322918 7f88e0bc0700 0 mds.0.cache creating system
> inode with ino:0x1
> 2020-10-22 11:36:47.922531 7f88e43c7700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:36:47.922549 7f88e43c7700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 4.00013s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:36:50.914516 7f88e83cf700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:36:51.351457 7f88e4bc8700 1 heartbeat_map reset_timeout
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:07.923089 7f88e43c7700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:07.923126 7f88e43c7700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 3.99913s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:37:10.914767 7f88e83cf700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:11.923216 7f88e43c7700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:11.923223 7f88e43c7700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 7.99926s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:37:15.914831 7f88e83cf700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:15.923286 7f88e43c7700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:15.923294 7f88e43c7700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 11.9994s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:37:19.923359 7f88e43c7700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:19.923366 7f88e43c7700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 15.9995s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:37:20.914917 7f88e83cf700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:23.923430 7f88e43c7700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:23.923437 7f88e43c7700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 19.9996s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:37:25.914981 7f88e83cf700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:27.923501 7f88e43c7700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:27.923508 7f88e43c7700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 23.9998s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:37:30.915046 7f88e83cf700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:31.923572 7f88e43c7700 1 heartbeat_map is_healthy
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:31.923579 7f88e43c7700 0 mds.beacon.hostnamecephssd01
> Skipping beacon heartbeat to monitors (last acked 27.9999s ago); MDS
> internal heartbeat is not healthy!
> 2020-10-22 11:37:32.412628 7f88e4bc8700 1 heartbeat_map reset_timeout
> 'MDSRank' had timed out after 15
> 2020-10-22 11:37:32.412635 7f88e4bc8700 1 mds.beacon.hostnamecephssd01
> is_laggy 28.4889 > 15 since last acked beacon
> 2020-10-22 11:37:32.412643 7f88e4bc8700 1 mds.0.90889 skipping upkeep work
> because connection to Monitors appears laggy
> 2020-10-22 11:37:32.412657 7f88e73cd700 1 mds.hostnamecephssd01 Updating
> MDS map to version 90890 from mon.2
> 2020-10-22 11:37:35.978858 7f88e934c700 0 mds.beacon.hostnamecephssd01
> MDS is no longer laggy
>
>
> Thanks in advance for any assistance you can provide!
> David
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