If I "curl http://localhost:9283/metrics"; and wait sufficiently long enough, I get this - says "No MON connection". But the mons are health and the cluster is functioning fine. That said, the mons' rocksdb sizes are fairly big because there's lots of rebalancing going on. The Prometheus endpoint hanging seems to happen regardless of the mon size anyhow. mon.woodenbox0 is 41 GiB >= mon_data_size_warn (15 GiB) mon.woodenbox2 is 26 GiB >= mon_data_size_warn (15 GiB) mon.woodenbox4 is 42 GiB >= mon_data_size_warn (15 GiB) mon.woodenbox3 is 43 GiB >= mon_data_size_warn (15 GiB) mon.woodenbox1 is 38 GiB >= mon_data_size_warn (15 GiB) # fg curl -H "Connection: close" http://localhost:9283/metrics <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta> <title>503 Service Unavailable</title> <style type="text/css"> #powered_by { margin-top: 20px; border-top: 2px solid black; font-style: italic; } #traceback { color: red; } </style> </head> <body> <h2>503 Service Unavailable</h2> <p>No MON connection</p> <pre id="traceback">Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/cherrypy/_cprequest.py", line 670, in respond response.body = self.handler() File "/usr/lib/python2.7/dist-packages/cherrypy/lib/encoding.py", line 217, in __call__ self.body = self.oldhandler(*args, **kwargs) File "/usr/lib/python2.7/dist-packages/cherrypy/_cpdispatch.py", line 61, in __call__ return self.callable(*self.args, **self.kwargs) File "/usr/lib/ceph/mgr/prometheus/module.py", line 704, in metrics return self._metrics(instance) File "/usr/lib/ceph/mgr/prometheus/module.py", line 721, in _metrics raise cherrypy.HTTPError(503, 'No MON connection') HTTPError: (503, 'No MON connection') </pre> <div id="powered_by"> <span> Powered by <a href="http://www.cherrypy.org";>CherryPy 3.5.0</a> </span> </div> </body> </html> On Fri, Mar 20, 2020 at 6:33 AM Paul Choi <pchoi@xxxxxxx> wrote: > Hello, > > We are running Mimic 13.2.8 with our cluster, and since upgrading to > 13.2.8 the Prometheus plugin seems to hang a lot. It used to respond under > 10s but now it often hangs. Restarting the mgr processes helps temporarily > but within minutes it gets stuck again. > > The active mgr doesn't exit when doing `systemctl stop ceph-mgr.target" > and needs to > be kill -9'ed. > > Is there anything I can do to address this issue, or at least get better > visibility into the issue? > > We only have a few plugins enabled: > $ ceph mgr module ls > { > "enabled_modules": [ > "balancer", > "prometheus", > "zabbix" > ], > > 3 mgr processes, but it's a pretty large cluster (near 4000 OSDs) and it's > a busy one with lots of rebalancing. (I don't know if a busy cluster would > seriously affect the mgr's performance, but just throwing it out there) > > services: > mon: 5 daemons, quorum > woodenbox0,woodenbox2,woodenbox4,woodenbox3,woodenbox1 > mgr: woodenbox2(active), standbys: woodenbox0, woodenbox1 > mds: cephfs-1/1/1 up {0=woodenbox6=up:active}, 1 up:standby-replay > osd: 3964 osds: 3928 up, 3928 in; 831 remapped pgs > rgw: 4 daemons active > > Thanks in advance for your help, > > -Paul Choi > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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