perfSONAR User Q&A and Other Discussion

[Brian Candler <>]

I made a fresh perfsonar-toolkit install in an Ubuntu 18.04 lxd 
container, using the debian package repo.

Problem: clicking on the "reverse traceroute" link on the front page 
(with target/toolkit/gui/reverse_traceroute.cgi) gives me a 500 internal 
server error.

/var/log/apache2/error.log shows:

[Sat Aug 31 13:36:53.609603 2019] [cgid:error] [pid 7071:tid 
140681676458944] (13)Permission denied: AH01241: exec of 
'/usr/lib/perfsonar/web-ng/root/gui/reverse_traceroute.cgi' failed
[Sat Aug 31 13:36:53.610807 2019] [cgid:error] [pid 381:tid 
140681538365184] [client xxxx] End of script output before headers: 
reverse_traceroute.cgi, referer: https://xxxx/toolkit/

And indeed, the execute permission is missing:

root@perf1:~# ls -l 
/usr/lib/perfsonar/web-ng/root/gui/reverse_traceroute.cgi
-rw-r--r-- 1 root root 52182 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/gui/reverse_traceroute.cgi

AFAICS, it's the only CGI with this problem:

root@perf1:~# find /usr/lib/perfsonar/ -name '*.cgi' | xargs ls -l
-rwxr-xr-x 1 root root 52669 Aug 15 01:10 
/usr/lib/perfsonar/graphs/cgi-bin/graphData.cgi
-rwxr-xr-x 1 root root 15346 Aug 15 01:10 
/usr/lib/perfsonar/traceroute-viewer/index.cgi
-rwxr-xr-x 1 root root 12545 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/admin/administrative_info/index.cgi
-rwxr-xr-x 1 root root  2340 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/admin/host.cgi
-rwxr-xr-x 1 root root  2492 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/admin/index.cgi
-rwxr-xr-x 1 root root 39425 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/admin/regular_testing/index.cgi
-rwxr-xr-x 1 root root  5379 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/admin/services/communities.cgi
-rwxr-xr-x 1 root root 10325 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/admin/services/host.cgi
-rwxr-xr-x 1 root root  6716 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/admin/services/ntp.cgi
-rwxr-xr-x 1 root root  4153 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/admin/services/regular_testing.cgi
-rwxr-xr-x 1 root root  2390 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/admin/tests.cgi
-rw-r--r-- 1 root root 52182 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/gui/reverse_traceroute.cgi
-rwxr-xr-x 1 root root  2640 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/index.cgi
-rwxr-xr-x 1 root root  2060 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/services/communities.cgi
-rwxr-xr-x 1 root root  4005 Aug 15 01:10 
/usr/lib/perfsonar/web-ng/root/services/host.cgi

It was an easy fix:

chmod +x /usr/lib/perfsonar/web-ng/root/gui/reverse_traceroute.cgi

But it would be good to fix this in the package:

root@perf1:~# dpkg-query -S 
/usr/lib/perfsonar/web-ng/root/gui/reverse_traceroute.cgi
perfsonar-toolkit: /usr/lib/perfsonar/web-ng/root/gui/reverse_traceroute.cgi

Regards,

Brian Candler.

P.S. There are also a couple of broken image links in the traceroute 
results page, in the top-left corner of the screen.

http://www.slac.stanford.edu/comp/net/wan-mon/stanford-seal.gif
http://www.slac.stanford.edu/icon/newlogo-sm.gif