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Graphing in Xymon

list Jeremy Laidman
Fri, 20 Sep 2019 10:01:20 +1000
Message-Id: <CACO=ejzuSUPVAoErv9967dNf5jrw4JF_cRXLh-Uzr=user-7163abc9e3d1@xymon.invalid>

It's my understanding that the "service=XYZ" option is used to find a match
in graphs.cfg (ie [XYZ]). Usually this is the same string as the column
name, but sometimes not, and I have to admit that I don't fully understand
the relationships between RRD filename, graph name, column name, service
name, the variables TEST2RRD and GRAPHS and the per-host TRENDS settings.


On Fri, 20 Sep 2019 at 03:03, Root, Paul T <user-76fdb6883669@xymon.invalid>
wrote:

Ah, that got it.  I had REQUEST_METHOD=get on the same line as
SCRIPT_NAME, effectively making the command ?showgraph REQUEST_METHOD=GET?


Also, the QUERY_STRING does not want the ncv: in it.


ConfigPulls yields:

$ $SCRIPT_NAME

Content-type: text/html


<html><head><title>Invalid request</title></head>

<body>Unknown graph requested</body></html>


While cpu, and another custom graph we have (proc-mem) both work fine.


I?m thinking the upper case maybe causing the issue. I?m going to try to
rename the test to lowercase.


*From:* Jeremy Laidman <user-0608abae5e7c@xymon.invalid>
*Sent:* Wednesday, September 18, 2019 6:47 PM
*To:* Root, Paul T <user-76fdb6883669@xymon.invalid>
*Cc:* xymon at xymon.com
*Subject:* Re: [Xymon] Graphing in Xymon


Following your commands, the only suggestion is that the variables might
not have been set correctly. Perhaps run "echo $QUERY_STRING; echo
$REQUEST_METHOD; echo $SCRIPT_NAME" immediately before "$SCRIPT_NAME".


In case my instructions were amiss, here's another example of debugging
showgraph.sh to follow:


https://lists.xymon.com/archive/2012-July/035214.html
<https://imss91-ctp.trendmicro.com:443/wis/clicktime/v1/query?url=https%3a%2f%2flists.xymon.com%2farchive%2f2012%2dJuly%2f035214.html&umid=53F7D197-92DC-7705-AA3B-96B005793723&auth=19120be9529b25014b618505cb01789c5433dae7-0da69dac38e7cd9a0ec0cb613ccf621beba4f183>;


J


On Wed, 18 Sep 2019 at 04:32, Root, Paul T <user-76fdb6883669@xymon.invalid>
wrote:

I must be doing something group here, neither worked:


$ SCRIPT_NAME=showgraph.sh REQUEST_METHOD=GET

root nsmdenvp117:/etc/xymon/analysis.d

$
QUERY_STRING='host=nsmdenvp185&service=ncv:ConfigPulls&graph_width=576&graph_height=120&disp=nsmdenvp185&nostale&color=blue&graph_start=1568489816&graph_end=1568662616&graph=hourly&action=view'


$ PATH=$PATH:/usr/lib64/xymon/cgi-bin

$ type showgraph.sh

showgraph.sh is /usr/lib64/xymon/cgi-bin/showgraph.sh

$ showgraph.sh

Content-type: text/html


<html><head><title>Invalid request</title></head>

<body>Invalid request - no host or service</body></html>

$ export QUERY_STRING

$ export SCRIPTNAME

$ $SCRIPTNAME

$ export SCRIPT_NAME

$ $SCRIPT_NAME

Content-type: text/html


<html><head><title>Invalid request</title></head>

<body>Invalid request - no host or service</body></html>

$
QUERY_STRING='host=nsmdenvp185&service=cpu&graph_width=576&graph_height=120&disp=nsmdenvp185&nostale&color=blue&graph_start=1568489816&graph_end=1568662616&graph=hourly&action=view'


$ $SCRIPT_NAME

Content-type: text/html


<html><head><title>Invalid request</title></head>

<body>Invalid request - no host or service</body></html>

$ file /usr/lib64/xymon/cgi-bin/showgraph.sh

/usr/lib64/xymon/cgi-bin/showgraph.sh: ELF 64-bit LSB executable, x86-64,
version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux
2.6.18, stripped


*From:* Jeremy Laidman <user-0608abae5e7c@xymon.invalid>
*Sent:* Monday, September 16, 2019 3:38 PM
*To:* Root, Paul T <user-76fdb6883669@xymon.invalid>
*Cc:* xymon at xymon.com
*Subject:* Re: [Xymon] Graphing in Xymon


On Tue, 17 Sep 2019 at 05:53, Root, Paul T <user-76fdb6883669@xymon.invalid>
wrote:

Looping back on this:


Running the showgraph by hand


$ *./showgraph.sh host=nsmdenvp185 service=ncv:ConfigPulls
graph_width=576 graph_height=120 disp=nsmdenvp185 nostale color=blue
graph_start=1568489816 graph_end=1568662616 graph=hourly action=view*


This won't work. The showgraph.cgi binary expects to be run as a CGI and
requires QUERY_STRING to be set (to
host=nsmdenvp185&service=ncv:ConfigPulls&graph_width=...) and
REQUEST_MATHOD to be set to "GET". It also expects SCRIPT_NAME to be set
(and normally it would be showgraph.sh) but I think this only generates
warnings.


Try running like so:


SCRIPT_NAME=showgraph.sh REQUEST_METHOD=GET
QUERY_STRING='host=nsmdenvp185&service=ncv:ConfigPulls&graph_width=576&graph_height=120&disp=nsmdenvp185&nostale&color=blue&graph_start=1568489816&graph_end=1568662616&graph=hourly&action=view'
./showgraph.sh


The output will be partly binary, so you might want to try:


SCRIPT_NAME=showgraph.sh REQUEST_METHOD=GET
QUERY_STRING='host=nsmdenvp185&service=ncv:ConfigPulls&graph_width=576&graph_height=120&disp=nsmdenvp185&nostale&color=blue&graph_start=1568489816&graph_end=1568662616&graph=hourly&action=view'
./showgraph.sh | sed '1,/^$/d' | file -


and see if it shows that a PNG file format was generated.


If this doesn't work, check for a service name such as "cpu" that is known
to work, rather than your custom "ncv:ConfigPulls".


Content-type: text/html


<html><head><title>Invalid request</title></head>

<body>Invalid request - no host or service</body></html>


Yep, cos no QUERY_STRING.


$ *ls /var/lib/xymon/rrd/nsmdenvp185/ConfigPulls**

/var/lib/xymon/rrd/nsmdenvp185/ConfigPulls.rrd

root nsmdenvp117:/usr/lib64/xymon/cgi-bin

$ cat ~ptroot/crap2

#!/bin/bash


$* curl -k
https://nsmdenvp117.corp.intranet/xymon-cgi/showgraph.sh\?host=nsmdenvp185\&service=ncv:ConfigPulls\&graph_width=576\&graph_height=120\&disp=nsmdenvp185\&nostale\&color=blue\&graph_start=1568489816\&graph_end=1568662616\&graph=hourly\&action=view
<https://imss91-ctp.trendmicro.com:443/wis/clicktime/v1/query?url=https%3a%2f%2fnsmdenvp117.corp.intranet%2fxymon%2dcgi%2fshowgraph.sh%255C%3fhost%3dnsmdenvp185%255C%26service%3dncv%3aConfigPulls%255C%26graph%5fwidth%3d576%255C%26graph%5fheight%3d120%255C%26disp%3dnsmdenvp185%255C%26nostale%255C%26color%3dblue%255C%26graph%5fstart%3d1568489816%255C%26graph%5fend%3d1568662616%255C%26graph%3dhourly%255C%26action%3dview&umid=53F7D197-92DC-7705-AA3B-96B005793723&auth=19120be9529b25014b618505cb01789c5433dae7-99d13073304ea227297a4aef5b6bce69d989c333>*

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">

<html><head>

<title>500 Internal Server Error</title>


This works for me (substituting my own Xymon servername, hostname and
service.


</head><body>

<h1>Internal Server Error</h1>


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