[Koha] Plack causes permanent CPU load of 100%

[Jonathan Druart]

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 at 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
> --
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