Re: mgr daemons becoming unresponsive

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Hi,

I have installed package
ceph-mgr_14.2.4-1-gd592e56-1bionic_amd64.deb
manually:
root@ld5505:/home# dpkg --force-depends -i
ceph-mgr_14.2.4-1-gd592e56-1bionic_amd64.deb
(Reading database ... 107461 files and directories currently installed.)
Preparing to unpack ceph-mgr_14.2.4-1-gd592e56-1bionic_amd64.deb ...
Unpacking ceph-mgr (14.2.4-1-gd592e56-1bionic) over
(14.2.4-1-gd592e56-1bionic) ...
dpkg: ceph-mgr: dependency problems, but configuring anyway as you
requested:
 ceph-mgr depends on ceph-base (= 14.2.4-1-gd592e56-1bionic); however:
  Package ceph-base is not configured yet.

Setting up ceph-mgr (14.2.4-1-gd592e56-1bionic) ...

The I restarted ceph-mgr.

However, there's no effect, means the log entries are still the same.
Or should I install dependencies, namely
ceph-base_14.2.4-1-gd592e56-1bionic_amd64.deb, too?
Or any other packages?

Installation from repo fails when using this repo-file:
root@ld5506:~# more /etc/apt/sources.list.d/ceph-shaman.list
deb https://shaman.ceph.com/repos/ceph/wip-no-scrape-mons-nautilus/
bionic main

W: Failed to fetch
https://shaman.ceph.com/repos/ceph/wip-no-scrape-mons-nautilus/dists/bionic/InRelease ;
500  Internal Server Error [IP: 147.204.6.136 8080]
W: Some index files failed to download. They have been ignored, or old
ones used instead.

Regards
Thomas

Am 07.11.2019 um 10:04 schrieb Oliver Freyermuth:
> Dear Thomas,
>
> the most correct thing to do is probably to add the full repo
> (the original link was still empty for me, but
> https://shaman.ceph.com/repos/ceph/wip-no-scrape-mons-nautilus/ seems
> to work).
> The commit itself suggests the ceph-mgr package should be sufficient.
>
> I'm still pondering though since our cluster is close to production
> (and for now disk health monitoring is disabled) -
> but updating the mgrs alone should also be fine with us. I hope to
> have time for the experiment later today ;-).
>
> Cheers,
>     Oliver
>
> Am 07.11.19 um 08:57 schrieb Thomas Schneider:
>> Hi,
>>
>> can you please advise which package(s) should be installed?
>>
>> Thanks
>>
>>
>>
>> Am 06.11.2019 um 22:28 schrieb Sage Weil:
>>> My current working theory is that the mgr is getting hung up when it
>>> tries
>>> to scrape the device metrics from the mon.  The 'tell' mechanism
>>> used to
>>> send mon-targetted commands is pretty kludgey/broken in nautilus and
>>> earlier.  It's been rewritten for octopus, but isn't worth
>>> backporting--it
>>> never really caused problems until the devicemanager started using it
>>> heavily.
>>>
>>> In any case, this PR just disables scraping of mon devices for
>>> nautilus:
>>>
>>>          https://github.com/ceph/ceph/pull/31446
>>>
>>> There is a build queued at
>>>
>>>         
>>> https://shaman.ceph.com/repos/ceph/wip-no-scrape-mons-nautilus/d592e56e$
>>>
>>>
>>> which should get packages in 1-2 hours.
>>>
>>> Perhaps you can install that package on the mgr host and try again to
>>> reproduce it again?
>>>
>>> I noticed a few other oddities in the logs while looking through them,
>>> like
>>>
>>>     https://tracker.ceph.com/issues/42666
>>>
>>> which will hopefully have a fix ready for 14.2.5.  I'm not sure
>>> about that
>>> auth error message, though!
>>>
>>> sage
>>>
>>>
>>> On Sat, 2 Nov 2019, Oliver Freyermuth wrote:
>>>
>>>> Dear Sage,
>>>>
>>>> good news - it happened again, with debug logs!
>>>> There's nothing obvious to my eye, it's uploaded as:
>>>> 0b2d0c09-46f3-4126-aa27-e2d2e8572741
>>>> It seems the failure was roughly in parallel to me wanting to
>>>> access the dashboard. It must have happened within the last ~5-10
>>>> minutes of the log.
>>>>
>>>> I'll now go back to "stable operation", in case you need anything
>>>> else, just let me know.
>>>>
>>>> Cheers and all the best,
>>>>     Oliver
>>>>
>>>> Am 02.11.19 um 17:38 schrieb Oliver Freyermuth:
>>>>> Dear Sage,
>>>>>
>>>>> at least for the simple case:
>>>>>   ceph device get-health-metrics osd.11
>>>>> => mgr crashes (but in that case, it crashes fully, i.e. the
>>>>> process is gone)
>>>>> I have now uploaded a verbose log as:
>>>>> ceph-post-file: e3bd60ad-cbce-4308-8b07-7ebe7998572e
>>>>>
>>>>> One potential cause of this (and maybe the other issues) might be
>>>>> because some of our OSDs are on non-JBOD controllers and hence are
>>>>> made by forming a Raid 0 per disk,
>>>>> so a simple smartctl on the device will not work (but
>>>>> -dmegaraid,<number> would be needed).
>>>>>
>>>>> Now I have both mgrs active again, debug logging on, device health
>>>>> metrics on again,
>>>>> and am waiting for them to become silent again. Let's hope the
>>>>> issue reappears before the disks run full of logs ;-).
>>>>>
>>>>> Cheers,
>>>>>     Oliver
>>>>>
>>>>> Am 02.11.19 um 02:56 schrieb Sage Weil:
>>>>>> On Sat, 2 Nov 2019, Oliver Freyermuth wrote:
>>>>>>> Dear Cephers,
>>>>>>>
>>>>>>> interestingly, after:
>>>>>>>   ceph device monitoring off
>>>>>>> the mgrs seem to be stable now - the active one still went
>>>>>>> silent a few minutes later,
>>>>>>> but the standby took over and was stable, and restarting the
>>>>>>> broken one, it's now stable since an hour, too,
>>>>>>> so probably, a restart of the mgr is needed after disabling
>>>>>>> device monitoring to get things stable again.
>>>>>>>
>>>>>>> So it seems to be caused by a problem with the device health
>>>>>>> metrics. In case this is a red herring and mgrs become instable
>>>>>>> again in the next days,
>>>>>>> I'll let you know.
>>>>>> If this seems to stabilize things, and you can tolerate inducing the
>>>>>> failure again, reproducing the problem with mgr logs cranked up
>>>>>> (debug_mgr
>>>>>> = 20, debug_ms = 1) would probably give us a good idea of why the
>>>>>> mgr is
>>>>>> hanging.  Let us know!
>>>>>>
>>>>>> Thanks,
>>>>>> sage
>>>>>>
>>>>>>   >
>>>>>>> Cheers,
>>>>>>>     Oliver
>>>>>>>
>>>>>>> Am 01.11.19 um 23:09 schrieb Oliver Freyermuth:
>>>>>>>> Dear Cephers,
>>>>>>>>
>>>>>>>> this is a 14.2.4 cluster with device health metrics enabled -
>>>>>>>> since about a day, all mgr daemons go "silent" on me after a
>>>>>>>> few hours, i.e. "ceph -s" shows:
>>>>>>>>
>>>>>>>>    cluster:
>>>>>>>>      id:     269cf2b2-7e7c-4ceb-bd1b-a33d915ceee9
>>>>>>>>      health: HEALTH_WARN
>>>>>>>>              no active mgr
>>>>>>>>              1/3 mons down, quorum mon001,mon002
>>>>>>>>      services:
>>>>>>>>      mon:        3 daemons, quorum mon001,mon002 (age 57m), out
>>>>>>>> of quorum: mon003
>>>>>>>>      mgr:        no daemons active (since 56m)
>>>>>>>>      ...
>>>>>>>> (the third mon has a planned outage and will come back in a few
>>>>>>>> days)
>>>>>>>>
>>>>>>>> Checking the logs of the mgr daemons, I find some "reset"
>>>>>>>> messages at the time when it goes "silent", first for the first
>>>>>>>> mgr:
>>>>>>>>
>>>>>>>> 2019-11-01 21:34:40.286 7f2df6a6b700  0 log_channel(cluster)
>>>>>>>> log [DBG] : pgmap v1798: 1585 pgs: 1585 active+clean; 1.1 TiB
>>>>>>>> data, 2.3 TiB used, 136 TiB / 138 TiB avail
>>>>>>>> 2019-11-01 21:34:41.458 7f2e0d59b700  0 client.0
>>>>>>>> ms_handle_reset on v2:10.160.16.1:6800/401248
>>>>>>>> 2019-11-01 21:34:42.287 7f2df6a6b700  0 log_channel(cluster)
>>>>>>>> log [DBG] : pgmap v1799: 1585 pgs: 1585 active+clean; 1.1 TiB
>>>>>>>> data, 2.3 TiB used, 136 TiB / 138 TiB avail
>>>>>>>>
>>>>>>>> and a bit later, on the standby mgr:
>>>>>>>>
>>>>>>>> 2019-11-01 22:18:14.892 7f7bcc8ae700  0 log_channel(cluster)
>>>>>>>> log [DBG] : pgmap v1798: 1585 pgs: 166 active+clean+snaptrim,
>>>>>>>> 858 active+clean+snaptrim_wait, 561 active+clean; 1.1 TiB data,
>>>>>>>> 2.3 TiB used, 136 TiB / 138 TiB avail
>>>>>>>> 2019-11-01 22:18:16.022 7f7be9e72700  0 client.0
>>>>>>>> ms_handle_reset on v2:10.160.16.2:6800/352196
>>>>>>>> 2019-11-01 22:18:16.893 7f7bcc8ae700  0 log_channel(cluster)
>>>>>>>> log [DBG] : pgmap v1799: 1585 pgs: 166 active+clean+snaptrim,
>>>>>>>> 858 active+clean+snaptrim_wait, 561 active+clean; 1.1 TiB data,
>>>>>>>> 2.3 TiB used, 136 TiB / 138 TiB avail
>>>>>>>>
>>>>>>>> Interestingly, the dashboard still works, but presents outdated
>>>>>>>> information, and for example zero I/O going on.
>>>>>>>> I believe this started to happen mainly after the third mon
>>>>>>>> went into the known downtime, but I am not fully sure if this
>>>>>>>> was the trigger, since the cluster is still growing.
>>>>>>>> It may also have been the addition of 24 more OSDs.
>>>>>>>>
>>>>>>>>
>>>>>>>> I also find other messages in the mgr logs which seem
>>>>>>>> problematic, but I am not sure they are related:
>>>>>>>> ------------------------------
>>>>>>>> 2019-11-01 21:17:09.849 7f2df4266700  0 mgr[devicehealth] Error
>>>>>>>> reading OMAP: [errno 22] Failed to operate read op for oid
>>>>>>>> Traceback (most recent call last):
>>>>>>>>    File "/usr/share/ceph/mgr/devicehealth/module.py", line 396,
>>>>>>>> in put_device_metrics
>>>>>>>>      ioctx.operate_read_op(op, devid)
>>>>>>>>    File "rados.pyx", line 516, in
>>>>>>>> rados.requires.wrapper.validate_func
>>>>>>>> (/home/jenkins-build/build/workspace/ceph-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos7/DIST/centos7/MACHINE_SIZE/huge/release/14.2.4/rpm/el7/BUIL
>>>>>>>> D/ceph-14.2.4/build/src/pybind/rados/pyrex/rados.c:4721)
>>>>>>>>    File "rados.pyx", line 3474, in rados.Ioctx.operate_read_op
>>>>>>>> (/home/jenkins-build/build/workspace/ceph-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos7/DIST/centos7/MACHINE_SIZE/huge/release/14.2.4/rpm/el7/BUILD/ceph-14.2.4/build/src/pybind/rados/pyrex/rados.c:36554)
>>>>>>>> InvalidArgumentError: [errno 22] Failed to operate read op for oid
>>>>>>>> ------------------------------
>>>>>>>> or:
>>>>>>>> ------------------------------
>>>>>>>> 2019-11-01 21:33:53.977 7f7bd38bc700  0 mgr[devicehealth] Fail
>>>>>>>> to parse JSON result from daemon osd.51 ()
>>>>>>>> 2019-11-01 21:33:53.978 7f7bd38bc700  0 mgr[devicehealth] Fail
>>>>>>>> to parse JSON result from daemon osd.52 ()
>>>>>>>> 2019-11-01 21:33:53.979 7f7bd38bc700  0 mgr[devicehealth] Fail
>>>>>>>> to parse JSON result from daemon osd.53 ()
>>>>>>>> ------------------------------
>>>>>>>>
>>>>>>>> The reason why I am cautious about the health metrics is that I
>>>>>>>> observed a crash when trying to query them:
>>>>>>>> ------------------------------
>>>>>>>> 2019-11-01 20:21:23.661 7fa46314a700  0 log_channel(audit) log
>>>>>>>> [DBG] : from='client.174136 -' entity='client.admin'
>>>>>>>> cmd=[{"prefix": "device get-health-metrics", "devid": "osd.11",
>>>>>>>> "target": ["mgr", ""]}]: dispatch
>>>>>>>> 2019-11-01 20:21:23.661 7fa46394b700  0 mgr[devicehealth]
>>>>>>>> handle_command
>>>>>>>> 2019-11-01 20:21:23.663 7fa46394b700 -1 *** Caught signal
>>>>>>>> (Segmentation fault) **
>>>>>>>>   in thread 7fa46394b700 thread_name:mgr-fin
>>>>>>>>
>>>>>>>>   ceph version 14.2.4
>>>>>>>> (75f4de193b3ea58512f204623e6c5a16e6c1e1ba) nautilus (stable)
>>>>>>>>   1: (()+0xf5f0) [0x7fa488cee5f0]
>>>>>>>>   2: (PyEval_EvalFrameEx()+0x1a9) [0x7fa48aeb50f9]
>>>>>>>>   3: (PyEval_EvalFrameEx()+0x67bd) [0x7fa48aebb70d]
>>>>>>>>   4: (PyEval_EvalFrameEx()+0x67bd) [0x7fa48aebb70d]
>>>>>>>>   5: (PyEval_EvalFrameEx()+0x67bd) [0x7fa48aebb70d]
>>>>>>>>   6: (PyEval_EvalCodeEx()+0x7ed) [0x7fa48aebe08d]
>>>>>>>>   7: (()+0x709c8) [0x7fa48ae479c8]
>>>>>>>>   8: (PyObject_Call()+0x43) [0x7fa48ae22ab3]
>>>>>>>>   9: (()+0x5aaa5) [0x7fa48ae31aa5]
>>>>>>>>   10: (PyObject_Call()+0x43) [0x7fa48ae22ab3]
>>>>>>>>   11: (()+0x4bb95) [0x7fa48ae22b95]
>>>>>>>>   12: (PyObject_CallMethod()+0xbb) [0x7fa48ae22ecb]
>>>>>>>>   13: (ActivePyModule::handle_command(std::map<std::string,
>>>>>>>> boost::variant<std::string, bool, long, double,
>>>>>>>> std::vector<std::string, std::allocator<std::string> >,
>>>>>>>> std::vector<long, std::allocator<long> >, std::vector<double,
>>>>>>>> std::allocator<double> > >, std::less<void>,
>>>>>>>> std::allocator<std::pair<std::string const,
>>>>>>>> boost::variant<std::string, bool, long, double,
>>>>>>>> std::vector<std::string, std::allocator<std::string> >,
>>>>>>>> std::vector<long, std::allocator<long> >, std::vector<double,
>>>>>>>> std::allocator<double> > > > > > const&,
>>>>>>>> ceph::buffer::v14_2_0::list const&,
>>>>>>>> std::basic_stringstream<char, std::char_traits<char>,
>>>>>>>> std::allocator<char> >*, std::basic_stringstream<char,
>>>>>>>> std::char_traits<char>, std::allocator<char> >*)+0x20e)
>>>>>>>> [0x55c3c1fefc5e]
>>>>>>>>   14: (()+0x16c23d) [0x55c3c204023d]
>>>>>>>>   15: (FunctionContext::finish(int)+0x2c) [0x55c3c2001eac]
>>>>>>>>   16: (Context::complete(int)+0x9) [0x55c3c1ffe659]
>>>>>>>>   17: (Finisher::finisher_thread_entry()+0x156) [0x7fa48b439cc6]
>>>>>>>>   18: (()+0x7e65) [0x7fa488ce6e65]
>>>>>>>>   19: (clone()+0x6d) [0x7fa48799488d]
>>>>>>>>   NOTE: a copy of the executable, or `objdump -rdS
>>>>>>>> <executable>` is needed to interpret this.
>>>>>>>> ------------------------------
>>>>>>>>
>>>>>>>> I have issued:
>>>>>>>> ceph device monitoring off
>>>>>>>> for now and will keep waiting to see if mgrs go silent again.
>>>>>>>> If there are any better ideas or this issue is known, let me know.
>>>>>>>>
>>>>>>>> Cheers,
>>>>>>>>     Oliver
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> 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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>>> To unsubscribe send an email to ceph-users-leave@xxxxxxx
>>
>
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