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leonardo_gyn
Cacti User
Joined: 22 Jan 2005
Posts: 65
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 Posted: Wed Feb 01, 2006 11:16 am Post subject: Use of uninitialized value in concatenation |
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Hi Guys,
I have installed template on a new Fedora Core 4 machine and got the following errors when running the script:
[root@proxy scripts]# perl ws_apachestats.pl www.mymachine.com
Use of uninitialized value in concatenation (.) or string at ws_apachestats.pl line 63.
Use of uninitialized value in concatenation (.) or string at ws_apachestats.pl line 65.
Use of uninitialized value in concatenation (.) or string at ws_apachestats.pl line 67.
Use of uninitialized value in concatenation (.) or string at ws_apachestats.pl line 69.
Use of uninitialized value in concatenation (.) or string at ws_apachestats.pl line 71.
Use of uninitialized value in split at ws_apachestats.pl line 91.
Use of uninitialized value in concatenation (.) or string at ws_apachestats.pl line 105.
apache_total_hits: apache_total_kbytes: apache_busy_workers: apache_idle_workers: apache_reqs_second: thread_O:0 threadC:0 threadD:0 threadG:0 threadI:0 threadK:0 threadL:0 threadR:0 threadS:0 threadW:0 thread_W:0 apache_cpuload:
[root@proxy scripts]#
Error is happening from console with root and with cacti user as well, the user i run cacti processes.
Strange is that I have this script running on some Red Hat 9 machines and got no errors at all.
Is this a new check from newer Perl versions ???
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gandalf
Developer
Joined: 02 Dec 2004
Posts: 12604
Location: Muenster, Germany
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| Posted: Wed Feb 01, 2006 2:37 pm Post subject: |
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Please tell us what your browser returns when entering www.mymachine.com/server-status?auto as URL. The script awaits some output like | Code: | $output =~ /Total Accesses: (.*)/;
$out .= "apache_total_hits:".$1." ";
$output =~ /Total kBytes: (.*)/;
$out .= "apache_total_kbytes:".$1." ";
$output =~ /Busy.*: (.*)/;
$out .= "apache_busy_workers:".$1." ";
$output =~ /Idle.*: (.*)/;
$out .= "apache_idle_workers:".$1." "; |
Please note the apache version
Reinhard
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leonardo_gyn
Cacti User
Joined: 22 Jan 2005
Posts: 65
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| Posted: Thu Feb 02, 2006 4:55 pm Post subject: |
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I dont know if this is related, but i upgraded perl and the warnings are gone. Unfortunely i have no fedora core 4 with original perl ... i will have one on the next days and i will redo tests on it.
I will post results until the weekend.
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dust2k
Cacti User
Joined: 04 Dec 2005
Posts: 85
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| Posted: Fri Feb 03, 2006 9:06 am Post subject: |
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does that pl script work under windows ?
I run it manually at command line and I got
perl G:/root/web/cacti/scripts/ws_apachestats.pl 192.168.1.20
The system cannot find the path specified.
Use of uninitialized value in concatenation (.) or string at G:/root/web/cacti/scripts/ws_apachestats.pl line 63.
Use of uninitialized value in concatenation (.) or string at G:/root/web/cacti/scripts/ws_apachestats.pl line 65.
Use of uninitialized value in concatenation (.) or string at G:/root/web/cacti/scripts/ws_apachestats.pl line 67.
Use of uninitialized value in concatenation (.) or string at G:/root/web/cacti/scripts/ws_apachestats.pl line 69.
Use of uninitialized value in split at G:/root/web/cacti/scripts/ws_apachestats.pl line 89.
Use of uninitialized value in concatenation (.) or string at G:/root/web/cacti/scripts/ws_apachestats.pl line 103.
apache_total_hits: apache_total_kbytes: apache_busy_workers: apache_idle_workers: thread_O:0 threadC:0 threadD:0 threadG:0 threadI:0 threadK:0 threadL:0 threadR:0 threadS:0 threadW:0 thread_W:0 apache_cpuload:
I compare the new script with original one and found new script actually use high speed version which use wget or lynx which I don't have on my windows box, what I can do now?
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dust2k
Cacti User
Joined: 04 Dec 2005
Posts: 85
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| Posted: Fri Feb 03, 2006 9:29 am Post subject: |
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Found the problem,
Apache doesn't accept IP as server name to show server-status and I need reconfig the internal DNS name to make it work.
also get wget and modify the script to use right path, everything is alright now.
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dust2k
Cacti User
Joined: 04 Dec 2005
Posts: 85
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| Posted: Fri Feb 03, 2006 10:09 am Post subject: Re: Use of uninitialized value in concatenation |
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| leonardo_gyn wrote: |
Error is happening from console with root and with cacti user as well, the user i run cacti processes.
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Your Apache's problem, server-status?auto didn't return proper values.
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leonardo_gyn
Cacti User
Joined: 22 Jan 2005
Posts: 65
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| Posted: Sat Feb 11, 2006 4:47 pm Post subject: Re: Use of uninitialized value in concatenation |
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| dust2k wrote: |
Your Apache's problem, server-status?auto didn't return proper values. |
Yeah, i think you are sure ..... i couldnt reproduce the problem and unfortunelly i didnt check server-status?auto URL when I was having the problem. I have tried all combination of things, restarting apache, perl stock and updated versions on FC4 but couldnt, not even one single time, reproduce the error.
I can get server-status page using my IP address (http://192.168.X.X/server-status), dont think that was the problem. In fact i was using www.myserver.com and not IP address ...
Well, i would like to have found a way of reproducing the error so we could handle it, but i couldnt ...
By the time, graphs are working perfectly !!!
| Description: |
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| Filesize: |
47.2 KB |
| Viewed: |
9057 Time(s) |
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dust2k
Cacti User
Joined: 04 Dec 2005
Posts: 85
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| Posted: Sun Feb 12, 2006 3:02 am Post subject: |
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| it's bit weired for me to implement it as well, first time it doesn't work, so I changed the httpd.conf and restarted apache, it still not working, even I just brower to test the url, but 5 mins later, everything start working, then I re-test other, everything is working..hehe .
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leonardo_gyn
Cacti User
Joined: 22 Jan 2005
Posts: 65
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| Posted: Sun Feb 12, 2006 6:10 am Post subject: |
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I think we should call that 'Believe it or not' TV show 
But are your graphs finally working now, all of them ?
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gandalf
Developer
Joined: 02 Dec 2004
Posts: 12604
Location: Muenster, Germany
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| Posted: Sun Feb 12, 2006 6:52 am Post subject: |
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| dust2k wrote: | | it's bit weired for me to implement it as well, first time it doesn't work, so I changed the httpd.conf and restarted apache, it still not working, even I just brower to test the url, but 5 mins later, everything start working, then I re-test other, everything is working..hehe . |
The 5 mins are commonly known as the poller interval. This perfectly normal that it would take at least 5 min (for GAUGE data sources) or up to 10 mins (for COUNTER data sources, difference between two polling cycles will be needed) for data to come up...
Reinhard
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gandalf
Developer
Joined: 02 Dec 2004
Posts: 12604
Location: Muenster, Germany
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| Posted: Sun Feb 12, 2006 7:03 am Post subject: |
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Here's a snippet from my /etc/http/conf/httpd.conf | Code: | # ExtendedStatus controls whether Apache will generate "full" status
# information (ExtendedStatus On) or just basic information (ExtendedStatus
# Off) when the "server-status" handler is called. The default is Off.
#
ExtendedStatus On |
and later | Code: | # Allow server status reports generated by mod_status,
# with the URL of http://servername/server-status
# Change the ".example.com" to match your domain to enable.
#
<Location /server-status>
SetHandler server-status
Order deny,allow
Deny from all
Allow from .team-scheck.de
Allow from 127.0.0.1
</Location> |
as well as a module | Code: | | LoadModule status_module modules/mod_status.so |
After changing the httpd.cond, refresh/restart of apache will be necessary. Of course you'll need tpo customize the Allow directives to your needs.
Verify this by entering sth like | Code: | | http://localhost/server-status |
as URL to your browser to see sth like the attached picture
Reinhard
| Description: |
| Apache's server-status page (example) |
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| Filesize: |
53.08 KB |
| Viewed: |
9048 Time(s) |
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dust2k
Cacti User
Joined: 04 Dec 2005
Posts: 85
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| Posted: Mon Feb 13, 2006 9:00 am Post subject: |
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| leonardo_gyn wrote: | | But are your graphs finally working now, all of them ? |
yes, all of them, works beautifully, the only issue I have now, the graph doesn't have pure connection chart like the IIS one, but that's ok, not a big problem anyway.
and thanks for lvm's post, it should come bit early then will save me lots of time.
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jmeyerdo
Joined: 02 May 2005
Posts: 26
Location: Dortmund, Germany
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| Posted: Wed Feb 15, 2006 2:44 am Post subject: |
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Hello!
Great tool - it is running on another server since several weeks.
With a new installation I have one problem. I read both major threads for "apachestats" now - but can't find a solution.
I installed apachestats yesterday (and the improved version this morning). Installation was without problems, the perl-script can grab the details.
But the graphs are not displayed:
| Code: |
/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="Localhost - Apache Statistics - Hits / s" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label="Hits/sec" \
AREA:#AAABA1:"Hits/sec" \
GPRINT::LAST:"Current\:%8.2lf %s" \
GPRINT::AVERAGE:"Average\:%8.2lf %s" \
GPRINT::MAX:"Maximum\:%8.2lf %s\n" \
COMMENT:" Represents the number of hits per second\n" \
COMMENT:" ApacheStats v0.4 - Rolf Poser\n"
RRDTool Says:
ERROR: can't parse '#AAABA1:Hits/sec'
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I am using rrdtool-1.0.49.
Any hint to solve this problem would be great - thank you!
Kind regards, Jens
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gandalf
Developer
Joined: 02 Dec 2004
Posts: 12604
Location: Muenster, Germany
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| Posted: Thu Feb 16, 2006 1:27 pm Post subject: |
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Seems that importing was not ok. The DEF statements are missing for the rrdtool graph. Please re-import the templates and send a screenshot/list of the outcome
Reinhard
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jmeyerdo
Joined: 02 May 2005
Posts: 26
Location: Dortmund, Germany
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| Posted: Thu Feb 16, 2006 3:00 pm Post subject: |
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Hello!
Thank you for your answer.
I re-imported (without deletion - is this ok?) the xml-template.
FInd output attached to this post.
Kind regards (from Dortmund), Jens
| Description: |
| Screenshot (re-) import XML-file. |
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| Filesize: |
96.49 KB |
| Viewed: |
8987 Time(s) |
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