[Xymon] [SOLVED] Xymon and Lighttpd 500 Internal Error

[Guy]

Brian,

Thank you, this resolved the issue. I did a fresh install of lighttpd,
and after adjusting some file-system permissions, your config works
great.

Thanks again,

Guy

On Wed, Sep 4, 2019 at 10:23 PM Brian Scott <bscott at bunyatech.com.au> wrote:
>
> On 4/9/19 9:15 pm, Guy wrote:
> > On Thu, Aug 29, 2019 at 2:15 PM Guy <patterson at nullamatix.com> wrote:
> >> Hello,
> >>
> >> The Xymon index page is loading; however, when I attempt to drill down
> >> into an individual service check (invoking svcstatus.sh), lighttpd
> >> returns a 500 internal server error.
> >>
> > Someone from the Lighttpd support forums responded with the following:
> > "It appears that the CGI is not returning any output, which is an
> > invalid CGI/1.1 response. lighttpd is receiving POLLHUP on the pipe
> > and cleaning up the CGI. Perhaps you forgot to flush output in the
> > script?"
> >
> > Here's the thread:
> > https://redmine.lighttpd.net/boards/2/topics/8703?r=8705#message-8705
> >
> > If I create /var/www/html/hello-world.sh and run it, it works as expected.
> >
> >> OS: Devuan Ascii 2.0
> >> Kernel: Linux pihole 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1+deb9u5
> >> (2019-08-11) x86_64 GNU/Linux
> >> Lighttpd: Version: 1.4.45-1
> >> Xymon: Version: 4.3.28-2
> >>
> >> Xymon and lighttpd were both installed from the official Devuan repos
> >> using apt-get.
> >>
> >> Here's my lighttpd config: https://clbin.com/F2LzF
> >> Here's an strace: https://clbin.com/EuesM
> >>
> >> Thanks,
> >>
> >> Guy
> > _______________________________________________
> > Xymon mailing list
> > Xymon at xymon.com
> > http://lists.xymon.com/mailman/listinfo/xymon
>
> Hi,
>
> The .sh files aren't actually shell scripts any more, they are compiled
> programs. Try getting rid of the cgi.assign clause for .sh completely.
>
> I've just had a look at an old lighttpd config that I used for xymon and
> found this in my vhosts.d directory:
>
> > server.modules  += ( "mod_cgi",
> >         "mod_auth",
> >         "mod_alias"
> > )
> >
> > alias.url += (
> >         "/xymon-cgi/" => "/usr/local/xymon/cgi-bin/",
> >         "/xymon-seccgi/" => "/usr/local/xymon/cgi-secure/",
> >         "/xymon/" => "/usr/local/xymon/server/www/",
> >         "/xymon" => "/usr/local/xymon/server/www/"
> > )
> >
> > $HTTP["url"] =~ "^/xymon-cgi/|^/xymon-seccgi/" {
> >         dir-listing.activate = "disable"
> >         cgi.assign = ( "" => "" )
> > }
> >
> > auth.backend = "htpasswd"
> > auth.backend.htpasswd.userfile = "/usr/local/xymon/server/etc/xymonpasswd"
> >
> > auth.require = ( "/xymon-seccgi/" => (
> >         "method"  => "basic",
> >         "realm"   => "Xymon Administration",
> >         "require" => "user=admin"
> >         )
> > )
> There is no mention of '.sh' mapping anywhere. While I'm a little hazy
> about all of this, I suspect that the line 'cgi.assign = ( "" => "" )'
> for the cgi directories is where the magic happens.
>
>
> Cheers,
>
>
> Brian Scott
>