I found my issue: it was own fault: I had created a systemctl service for solr and that was causing the issue (see https://gist.github.com/hammady/3d7b5964c7b0f90997865ebef40bf5e1)
The systemctl process starts Solr but then immediately shuts it down, which apparently takes 90 seconds, and then it helpfully restarts it. Starting Solr using the solr command works fine and it stays up. I was setting this server up very quickly without really knowing what I was doing, so there you go. I had forgotten that’d done this setup manually rather than through some Solr-supported process. Sorry to have bothered the group but maybe somebody else will find this discussion useful in the future. Cheers, Eliot _____________________________________________ Eliot Kimber Sr. Staff Content Engineer O: 512 554 9368 servicenow servicenow.com<https://www.servicenow.com> LinkedIn<https://www.linkedin.com/company/servicenow> | X<https://twitter.com/servicenow> | YouTube<https://www.youtube.com/user/servicenowinc> | Instagram<https://www.instagram.com/servicenow> From: Eliot Kimber <eliot.kim...@servicenow.com.INVALID> Date: Tuesday, January 28, 2025 at 12:53 PM To: users@solr.apache.org <users@solr.apache.org> Subject: Re: Solo server restarting every 90 seconds for no clear reason [External Email] Solr 9.7.0 I downloaded it and manually installed. I have full control of this server and thus the cron jobs, and there are no cron jobs that should be interfering with Solr in any way and certainly none that run ever 90 seconds (my cron jobs run about once an hour on this server). I found a Solr-specific directory under /tmp (jetty-127_0_0_1-8983-webapp-_solr-any-6912854890539458980) and it changes at the same 90 second interval, but I’m guessing that’s because the server restarts, not because something is interfering with it. All the directories are the default locations (i.e. /var/solr/…) and I haven’t done anything like simlink the /data directory to a different file system (my /var file system is small but still has plenty of space at the moment). This is a corporate managed VM so it’s possible that it’s being subjected to some regular command that has the effect of triggering Solr to restart. Can someone confirm that there’s no aspect of a normal Solr configuration (and certainly nothing in the default configuration) that would cause this sort of periodic restart? Since I didn’t find anything similar to this issue in my searching other than an out-of-memory condition triggering it, I’m thinking it must be something specific to my server and non-obvious. Thanks, Eliot _____________________________________________ Eliot Kimber Sr. Staff Content Engineer O: 512 554 9368 servicenow servicenow.com<https://www.servicenow.com<https://www.servicenow.com>> LinkedIn<https://www.linkedin.com/company/servicenow<https://www.linkedin.com/company/servicenow>> | X<https://twitter.com/servicenow<https://twitter.com/servicenow>> | YouTube<https://www.youtube.com/user/servicenowinc<https://www.youtube.com/user/servicenowinc>> | Instagram<https://www.instagram.com/servicenow<https://www.instagram.com/servicenow>> From: Andreas Mock <andreas.m...@drumedar.de> Date: Tuesday, January 28, 2025 at 9:46 AM To: users@solr.apache.org <users@solr.apache.org> Subject: AW: Solo server restarting every 90 seconds for no clear reason [External Email] > -----Ursprüngliche Nachricht----- > Von: Eliot Kimber <eliot.kim...@servicenow.com.INVALID> > Gesendet: Dienstag, 28. Januar 2025 14:43 > An: users@solr.apache.org > Betreff: Solo server restarting every 90 seconds for no clear reason > > I have installed Solr on RHEL 9 and it is working fine except that it > restarts every 90 seconds. Which version? Which kind of installation did you use? (dnf-driven, manual with tgz) Best regards Andreas
