perfSONAR User Q&A and Other Discussion

[Casey Russell <>]

I had missed Jason's email, but I see it now.  I'll add gnuplot to my list of things to check after installing updates.  

Thank you guys.  We certainly appreciate it.

Casey Russell

Network Engineer

Kansas Research and Education Network

1405 Wakarusa Dr., Ste B
Lawrence, KS 66049

(785)856-9820  ext 9809

On Wed, Sep 4, 2013 at 2:48 PM, Alan Whinery <> wrote:

I have observed multiple cases where a package manager (one time yum, another time apt) decided I wasn't using something or found it otherwise un-needed (i.e. it was a dependency for something that got explicitly removed), and removed it.

On 9/4/2013 9:44 AM, Casey Russell wrote:

Andy, 

Well, as has happened far too often in my 15 year IT career, as soon as I publicly announce a problem, the machine makes me a liar and begins to behave normally.  

This problem existed every time I've tried to load the pages for the last 6 days, but just now when I tried it (to get you log files) the graphs loaded normally.

So here are the logs from earlier this morning when it was failing.  Perhaps if I know why it was failing before, I can fix it myself next time.  

[Wed Sep 04 12:20:09 2013] [error] [client 2001:470:7c:1a2:fcba:46b4:102e:fe38] [Wed Sep  4 12:20:09 2013] owampplot_histogram.cgi: Couldn't run gnuplot at /opt/perfsonar_ps/toolkit/web/root/gui/owamp_jitter/owampplot_histogram.cgi line 408., referer: http://ps-data.kanren.net/toolkit/gui/owamp_jitter/owamp.cgi?name=KANREN_OWAMP_TCP4

[Wed Sep 04 12:20:12 2013] [error] [client 2001:470:7c:1a2:fcba:46b4:102e:fe38] [Wed Sep  4 12:20:12 2013] owampplot_histogram.cgi: Can't exec "gnuplot": No such file or directory at /opt/perfsonar_ps/toolkit/web/root/gui/owamp_jitter/owampplot_histogram.cgi line 408., referer: http://ps-data.kanren.net/toolkit/gui/owamp_jitter/owamp.cgi?name=KANREN_OWAMP_TCP4

[Wed Sep 04 12:20:12 2013] [error] [client 2001:470:7c:1a2:fcba:46b4:102e:fe38] [Wed Sep  4 12:20:12 2013] owampplot_histogram.cgi: Couldn't run gnuplot at /opt/perfsonar_ps/toolkit/web/root/gui/owamp_jitter/owampplot_histogram.cgi line 408., referer: http://ps-data.kanren.net/toolkit/gui/owamp_jitter/owamp.cgi?name=KANREN_OWAMP_TCP4

[Wed Sep 04 12:25:44 2013] [error] [client 2001:470:7c:1a2:fcba:46b4:102e:fe38] [Wed Sep  4 12:25:44 2013] owampplot_histogram.cgi: Can't exec "gnuplot": No such file or directory at /opt/perfsonar_ps/toolkit/web/root/gui/owamp_jitter/owampplot_histogram.cgi line 408., referer: http://ps-data.kanren.net/toolkit/gui/owamp_jitter/owamp.cgi?name=KANREN_OWAMP_TCP4

[Wed Sep 04 12:25:44 2013] [error] [client 2001:470:7c:1a2:fcba:46b4:102e:fe38] [Wed Sep  4 12:25:44 2013] owampplot_histogram.cgi: Couldn't run gnuplot at /opt/perfsonar_ps/toolkit/web/root/gui/owamp_jitter/owampplot_histogram.cgi line 408., referer: http://ps-data.kanren.net/toolkit/gui/owamp_jitter/owamp.cgi?name=KANREN_OWAMP_TCP4

[Wed Sep 04 12:26:18 2013] [error] [client 2001:470:7c:1a2:fcba:46b4:102e:fe38] [Wed Sep  4 12:26:18 2013] owampplot_histogram.cgi: Can't exec "gnuplot": No such file or directory at /opt/perfsonar_ps/toolkit/web/root/gui/owamp_jitter/owampplot_histogram.cgi line 408., referer: http://ps-data.kanren.net/toolkit/gui/owamp_jitter/owamp.cgi?name=KANREN_OWAMP_TCP4

Casey Russell

Network Engineer

Kansas Research and Education Network

1405 Wakarusa Dr., Ste B
Lawrence, KS 66049

(785)856-9820  ext 9809

On Wed, Sep 4, 2013 at 1:43 PM, Andy Lake <> wrote:

Hi Casey,

Could you open the page in question in your browser then then send us /var/log/httpd/error_log? It looks like your host is collecting OWAMP data from browsing the various pages, looks like maybe the CGI script is hitting some type of error. 

Thanks,

Andy