Monday, 2020-10-05

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openstackgerritPierre Riteau proposed openstack/project-config master: Add Review-Priority flag for cloudkitty  https://review.opendev.org/75607213:40
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larsksHey folks. Is something up with docs.openstack.org? I can't seem to load any pages from there.19:50
fungichecking19:50
fungiit's taking a while to load for me. i'll see if something's up (or down rather) with static.opendev.org or the afs backend19:50
clarkbdmesg says we lost connectivity with a fileserver19:51
clarkbafs02.dfw.openstack.org. specifically19:52
fungilooks like static.opendev.org is having trouble talking to a fileserver19:52
fungiafs: Lost contact with file server 23.253.73.143 in cell openstack.org (code -1) (all multi-homed ip addresses down for the server)19:52
fungiafs: file server 23.253.73.143 in cell openstack.org is back up (code 0) (multi-homed address; other same-host interfaces may still be down)19:52
fungiafs: Waiting for busy volume 536871075 () in cell openstack.org19:52
fungirepeated for multiple volumes19:52
fungiyeah, 23.253.73.143 is afs02.dfw19:53
clarkbhttp://cacti.openstack.org/cacti/graph.php?action=view&local_graph_id=6397&rra_id=all19:53
fungiwhich i can't ssh into19:53
fungiwill check the oob console19:53
clarkbthe extra cpu load seems to come along with some extra bw usage but that is before the fedora mirror would've been released I think19:53
clarkbunless fedora is primary on afs02?19:53
clarkbI confirm that I can't ssh, I get a host key and then not much further than that19:54
fungihung kernel tasks reported on the console, and no login prompt after a carriage return19:55
fungii think the vm hung19:55
fungii'll give it a reboot via the nova api19:55
clarkb2020-10-05 19:31:34  | Running vos release. <- thats the fedora mirror log which happens well after the problme starts and afs01 is primary19:55
fungiyeah, if we want to backtrack from lastlog (assuming it's not been thoroughly rotated away), the hung kernel tasks started 3961321 seconds after boot19:56
fungiin two bursts, a second appeared at 3961441 second19:57
fungiopenstack server reboot --hard issued just now19:58
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fungiif those hung kernel tasks were logged today, then i expect to see them in the lastlog for 2020-08-2019:59
fungii worry that may be prior to wtmp.119:59
clarkbserver seems up now20:00
clarkband docs load20:01
fungilarsks: docs.o.o should be back up for you now?20:01
fungiyeah, just checked myself20:01
fungionce static.o.o realized the fileserver was down hard it switched to the redundant one, i thinl20:01
clarkbthe fedora release detected failure and said it could not be completed20:02
fungiafs was not designed for our modern clouds where virtual machines just become hung and don't fall entirely offline20:02
clarkbI expect that means all the locks were returned and it will try again in a bit20:02
fungiyeah, hopefully we don't need to clean up any replicas which were mid-release,20:02
fungibut we should probably look to be sure20:03
fungii can ssh into afs02.dwf now20:03
fungiwtmp.1 begins Thu Sep  3 21:10:10 202020:03
fungifooey20:03
fungianyway, past experience has indicated that if we see hung kernel tasks on the console, those tend to be irrecoverable and coincide with when the server ceased to be responsive20:04
fungicacti places the time of death between 18:50 and 18:55 utc20:06
fungi#status log hard rebooted afs03.dfw.o.o to address a server hung condition which seems to have started at roughly 18:50 utc20:06
openstackstatusfungi: finished logging20:06
* fungi sighs20:07
fungi#status log CORRECTION: hard rebooted afs02.dfw.o.o to address a server hung condition which seems to have started at roughly 18:50 utc20:07
openstackstatusfungi: finished logging20:07
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larsksfungi: works for me now, yes. Thanks!20:20
fungilarsks: awesome. sorry about... clouds20:20
larsksfungi: also...wow, afs, haven't come across that in years and years... :)20:23
fungiyou just don't run in the right circles, apparently ;)20:25
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