Hi Ryan, If Solr auto-restarts, I suppose it's systemd doing that. When it restarts the Solr service, systemd should log this (maybe somethibg like: journalctl --no-pager | grep -i solr).
Then you can go in your Solr logs and check what happened right before that time. Also, check system logs for what happened before Solr was restarted. Best regards, Radu https://sematext.com/ joi, 4 iun. 2020, 19:24 Ryan W <rya...@gmail.com> a scris: > Happened again today. Solr stopped running. Apache hasn't stopped in 10 > days, so this is not due to a server reboot. > > Solr is not being run with the oom-killer. And when I grep for ERROR in > the logs, there is nothing from today. > > On Mon, May 18, 2020 at 3:15 PM James Greene <ja...@jamesaustingreene.com> > wrote: > > > I usually do a combination of grepping for ERROR in solr logs and > checking > > journalctl to see if an external program may have killed the process. > > > > > > Cheers, > > > > /************************************ > > * James Austin Greene > > * www.jamesaustingreene.com > > * 336-lol-nerd > > ************************************/ > > > > > > On Mon, May 18, 2020 at 1:39 PM Erick Erickson <erickerick...@gmail.com> > > wrote: > > > > > ps aux | grep solr > > > > > > on a *.nix system will show you all the runtime parameters. > > > > > > > On May 18, 2020, at 12:46 PM, Ryan W <rya...@gmail.com> wrote: > > > > > > > > Is there a config file containing the start params? I run solr > like... > > > > > > > > bin/solr start > > > > > > > > I have not seen anything in the logs that seems informative. When I > > grep > > > in > > > > the logs directory for 'memory', I see nothing besides a couple > entries > > > > like... > > > > > > > > 2020-05-14 13:05:56.155 INFO (main) [ ] > > > o.a.s.h.a.MetricsHistoryHandler > > > > No .system collection, keeping metrics history in memory. > > > > > > > > I don't know what that entry means, though the date does roughly > > coincide > > > > with the last time solr stopped running. > > > > > > > > Thank you. > > > > > > > > > > > > On Mon, May 18, 2020 at 12:00 PM Erick Erickson < > > erickerick...@gmail.com > > > > > > > > wrote: > > > > > > > >> Probably, but check that you are running with the oom-killer, it'll > be > > > in > > > >> your start params. > > > >> > > > >> But absent that, something external will be the culprit, Solr > doesn't > > > stop > > > >> by itself. Do look at the Solr log once things stop, it should show > if > > > >> someone or something stopped it. > > > >> > > > >> On Mon, May 18, 2020, 10:43 Ryan W <rya...@gmail.com> wrote: > > > >> > > > >>> I don't see any log file with "oom" in the file name. Does that > mean > > > >> there > > > >>> hasn't been an out-of-memory issue? Thanks. > > > >>> > > > >>> On Thu, May 14, 2020 at 10:05 AM James Greene < > > > >> ja...@jamesaustingreene.com > > > >>>> > > > >>> wrote: > > > >>> > > > >>>> Check the log for for an OOM crash. Fatal exceptions will be in > the > > > >> main > > > >>>> solr log and out of memory errors will be in their own -oom log. > > > >>>> > > > >>>> I've encountered quite a few solr crashes and usually it's when > > > >> there's a > > > >>>> threshold of concurrent users and/or indexing happening. > > > >>>> > > > >>>> > > > >>>> > > > >>>> On Thu, May 14, 2020, 9:23 AM Ryan W <rya...@gmail.com> wrote: > > > >>>> > > > >>>>> Hi all, > > > >>>>> > > > >>>>> I manage a site where solr has stopped running a couple times in > > the > > > >>> past > > > >>>>> week. The server hasn't been rebooted, so that's not the reason. > > > >> What > > > >>>> else > > > >>>>> causes solr to stop running? How can I investigate why this is > > > >>>> happening? > > > >>>>> > > > >>>>> Thank you, > > > >>>>> Ryan > > > >>>>> > > > >>>> > > > >>> > > > >> > > > > > > > > >
