Plack causes permanent CPU load of 100%
Hi We are running Koha 16.11.01 on Debian GNU/Linux 8 (64-bit). Since some weeks we see Plack causing an almost permanent CPU load of 100% (maybe this happened after a regular update of the Debian Perl packages?). The file "/var/log/koha/INSTANCE/plack.log" constantly gets lines like the following added: Error while loading /etc/koha/plack.psgi: Can't load application from file "/usr/share/koha/api/v1/app.pl": Can't locate object method "cache_dir" via package "Swagger2::SchemaValidator" at /usr/share/perl5/Swagger2.pm line 41. Compilation failed in require at (eval 1221) line 1. A restart of the host doesn't solve the problem. For the moment we have stopped Plack and deactivated it completely. Does anyone know what causes this problem and how to solve it? Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 · E mik@adminkuhn.ch · W www.adminkuhn.ch
Hi Michael, Why 16.11.01? You should upgrade. The Mojolicious version has changed, and maybe the wrong version has been picked from the packages. The quick and easy fix would be to comment the "api" lines in the psgi file: @ plack.psgi:62 @ my $opac = Plack::App::CGIBin->new( root => $ENV{DEV_INSTALL}? "$home/opac": "$home/opac/cgi-bin/opac" )->to_app; -my $apiv1 = builder { - my $server = Mojo::Server::PSGI->new; - $server->load_app("$home/api/v1/app.pl"); - $server->to_psgi_app; -}; +#my $apiv1 = builder { +# my $server = Mojo::Server::PSGI->new; +# $server->load_app("$home/api/v1/app.pl"); +# $server->to_psgi_app; +#}; builder { enable "ReverseProxy"; @ plack.psgi:76 @ builder { mount '/opac' => $opac; mount '/intranet' => $intranet; - mount '/api/v1/app.pl' => $apiv1; +# mount '/api/v1/app.pl' => $apiv1; This is for master, but I guess it is more or less the same for 16.11.01 Cheers, Jonathan On Thu, 4 Jan 2018 at 11:21 Michael Kuhn <mik@adminkuhn.ch> wrote:
Hi
We are running Koha 16.11.01 on Debian GNU/Linux 8 (64-bit).
Since some weeks we see Plack causing an almost permanent CPU load of 100% (maybe this happened after a regular update of the Debian Perl packages?). The file "/var/log/koha/INSTANCE/plack.log" constantly gets lines like the following added:
Error while loading /etc/koha/plack.psgi: Can't load application from file "/usr/share/koha/api/v1/app.pl": Can't locate object method "cache_dir" via package "Swagger2::SchemaValidator" at /usr/share/perl5/Swagger2.pm line 41. Compilation failed in require at (eval 1221) line 1.
A restart of the host doesn't solve the problem. For the moment we have stopped Plack and deactivated it completely.
Does anyone know what causes this problem and how to solve it?
Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 <+41%2061%20261%2055%2061> · E mik@adminkuhn.ch · W www.adminkuhn.ch _______________________________________________ Koha mailing list http://koha-community.org Koha@lists.katipo.co.nz https://lists.katipo.co.nz/mailman/listinfo/koha
Hi Jonathan
Why 16.11.01? You should upgrade.
The Mojolicious version has changed, and maybe the wrong version has been picked from the packages. The quick and easy fix would be to comment the "api" lines in the
Well, the machine is not yet in production but there will be an upgrade to Koha 17.11 in the near future (even if we originally planned to stay on oldstable...). psgi file: Thanks for the quick fix! I just reactivated and started Plack and it works like a charm, no more visible load caused by Plack. Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 · E mik@adminkuhn.ch · W www.adminkuhn.ch
you can still use 16.11.x if you want, but the latest, 16.11.15 :) On Thu, 4 Jan 2018 at 12:36 Michael Kuhn <mik@adminkuhn.ch> wrote:
Hi Jonathan
Why 16.11.01? You should upgrade.
Well, the machine is not yet in production but there will be an upgrade to Koha 17.11 in the near future (even if we originally planned to stay on oldstable...).
The Mojolicious version has changed, and maybe the wrong version has been picked from the packages. The quick and easy fix would be to comment the "api" lines in the psgi file:
Thanks for the quick fix! I just reactivated and started Plack and it works like a charm, no more visible load caused by Plack.
Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 <+41%2061%20261%2055%2061> · E mik@adminkuhn.ch · W www.adminkuhn.ch
That's because your repository points to a newer Koha (oldstable?) I recommend that you use the version number in your config (16.11) and reinstall libmojolicious-perl and libjson-validator-perl from the repo. Regards El jue., 4 de ene. de 2018 11:21 a. m., Michael Kuhn <mik@adminkuhn.ch> escribió:
Hi
We are running Koha 16.11.01 on Debian GNU/Linux 8 (64-bit).
Since some weeks we see Plack causing an almost permanent CPU load of 100% (maybe this happened after a regular update of the Debian Perl packages?). The file "/var/log/koha/INSTANCE/plack.log" constantly gets lines like the following added:
Error while loading /etc/koha/plack.psgi: Can't load application from file "/usr/share/koha/api/v1/app.pl": Can't locate object method "cache_dir" via package "Swagger2::SchemaValidator" at /usr/share/perl5/Swagger2.pm line 41. Compilation failed in require at (eval 1221) line 1.
A restart of the host doesn't solve the problem. For the moment we have stopped Plack and deactivated it completely.
Does anyone know what causes this problem and how to solve it?
Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 · E mik@adminkuhn.ch · W www.adminkuhn.ch _______________________________________________ Koha mailing list http://koha-community.org Koha@lists.katipo.co.nz https://lists.katipo.co.nz/mailman/listinfo/koha
-- Tomás Cohen Arazi Theke Solutions (https://theke.io <http://theke.io/>) ✆ +54 9351 3513384 GPG: B2F3C15F
participants (3)
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Jonathan Druart -
Michael Kuhn -
Tomas Cohen Arazi