> On 16 May 2016, at 12:55 , Grzegorz Junka <li...@gjunka.com> wrote: > > I have a server running 13 jails for various system services. Recently I > added two jails to run simple go applications for testing. They open a > network socket and nginx, which is in another jail, and which round robin > balances requests to them. I mention that because it may be related, however > not necessarily because it was happening earlier. > > The problem is that every 2-3 days jails in my servers stop responding. > "jexec jailname tcsh" hangs forever, "service jail stop jailname" hangs > forever as well. "top" doesn't show anything suspicious. I can login through > SSH to the main server fine. I don't login to jails through SSH so I can't > check but it seems that when that happens they stop responding because the > services that are running in them stop too (e.g. web server, imap, ...). I > tried to "kill -9" the "jexec" process that hangs but that doesn't work. > > My first question is what evidence should I gather when that happens so that > I can investigate the issue later on after the server is restarted? > > And the second question, any idea why that might be happening in the first > place? > > I am running FreeBSD 10.3 AMD64 updated from 10.2 a couple of weeks ago.
If you can log into the base system and issue commands there; try to see what procstat (-k) thinks about various jailed processes. You could also check ps axl for the WCHAN and see if anything suspicious shows up. /bz _______________________________________________ freebsd-jail@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-jail To unsubscribe, send any mail to "freebsd-jail-unsubscr...@freebsd.org"
