https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=19811 Bug ID: 19811 Summary: Preventing runaway processes bringing down Koha Change sponsored?: --- Product: Koha Version: 17.05 Hardware: All OS: All Status: NEW Severity: enhancement Priority: P5 - low Component: Architecture, internals, and plumbing Assignee: koha-bugs@lists.koha-community.org Reporter: r.delahunty@arts.ac.uk QA Contact: testopia@bugs.koha-community.org We just had a complete Koha outage which we believe was caused by 150+ requests to /cgi-bin/koha/circ/returns.pl sent simultaneously. Apparently this could have been caused by someone on the issue desk accidentally pressing the resend key. Our server support people have to kill the processes, presumably via the command line. It would be very easy to trigger repeated calls to returns.pl (and I guess other scripts) by accidently resting a book (or whatever) on the edge of the keyboard, catching the Enter key. Just now I was able to bring down our test system (both intranet and OPAC) by merely holding down the enter key (using returns.pl) for maybe a maximum of 5-7 seconds. This a serious vulnerability, where a momentary lapse of care with a book on a keyboard can crash the Koha system. Ray Delahunty University of the Arts London -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.