On 4/5/2017 11:33 AM, Asif Iqbal wrote:

(xymon)@xymon:~$ tail -1 /var/log/apache2/error.log [Wed Apr 05 14:15:17.305430 2017] [cgi:error] [pid 3744] [client 10.13.136.222:40560 <http://10.13.136.222:40560>] End of script output before headers: acknowledge.sh, referer: https://xymon.example.net/xymon/groupA/groupA_syslog/groupA_syslog.html

page groupA GroupA SERVERS subpage groupA_syslog GroupA Syslog Servers group-compress <H3><I>GorupA Syslog SERVERS</I></H3> 192.168.1.250 foo.example.net <http://foo.example.net> 192.168.2.250 bar.example.net <http://bar.example.net>

If I am a layer up Acknowledge Alert works without giving any internal server error.

Any suggestion on where to look?

Thanks

Hmm. Was not able to duplicate this on my side.

I would begin by setting XYMONCGILOGDIR in your environment to somewhere apache (etc.) has write privileges, then adding --debug to CGI_ACK_OPTS in cgioptions.cfg. That should result in logs there. Alternatively, --debug=stderr should send at least the debug output over to your normal apache log.

HTH, -jc