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<td class="ProgramTitle"> Snmp process check</td>
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<p class="NewsItemDate">Script : check_snmp_process.pl</p>
<p class="SectionTitle"> Last update : Jun 09 2007</p>
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<p class="SectionTitle">Description : </p>
<p class="SectionBody">Checks by snmp v1 or v3 if a process is running
and how many instances are running (minimum &amp; maximum). <br>
It is also possible to check memory and cpu used by one or a group
of process<br>
<br>
Works on Windows, Linux/Unix, AS400.</p>
<p class="SectionBody"> V<>rifie par snmp v1 ou v3 si un process tourne
et combien d'instances de ce process tournent (minimum et maximum).<br>
Il est &eacute;galement possible de v&eacute;rifier la m&eacute;moire
et le cpu utilis&eacute;.<br>
<br>
<span class="SectionTitle"> Standard checks<br>
</span></p>
<p class="SectionBody">The plugin checks if there is at least one
process matching the filter (<b>-n </b>option) when no warning or
critical levels are set. <br>
The filter is treated as a regular expression by default, but you
can deactivate this (<b>-r</b>)</p>
<p class="SectionBody">With the following options, you can add to your process selection : </p>
<p class="SectionBody">-f : get full path of the script instead of only it's name</p>
<p class="SectionBody">-A : add parameters with the script name</p>
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<th class="SectionBody" scope="col">Option</th>
<th class="SectionBody" scope="col">how the script will see the process </th>
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<td class="SectionBody">None</td>
<td><span class="SectionBody">named</span></td>
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<td class="SectionBody">-f</td>
<td><span class="SectionBody">/usr/sbin/named</span></td>
</tr>
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<td class="SectionBody">-A</td>
<td><span class="SectionBody">named -u named -t /var/named/chroot</span></td>
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<td class="SectionBody">-f -A </td>
<td><span class="SectionBody">/usr/sbin/named -u named -t /var/named/chroot</span></td>
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</table>
<p class="SectionBody">Warning : the -f &amp; -A option will not function properly for Windows hosts (the snmp agent don't give this information)</p>
<p class="SectionBody"> You can use -w and -c options to set the warning
and critical levels : <br>
<b>-w &lt;minW&gt;,&lt;maxW&gt; </b>: with minW and maxW the minimum
and maximum number of processes.<br>
<br>
<b>-c &lt;minC&gt;,&lt;maxC&gt;</b> : same thing<br>
Of course : <b>minC &lt;= minW &lt; maxW &lt;=maxC</b><br>
<i><br>
You can omit &lt;maxW&gt; and &lt;maxC&gt;</i><br>
<br>
Saying N is the current number of processes<br>
- N &lt; minC : critical<br>
- minC &lt; N &lt;=minW : warning<br>
- minW&lt; N &lt;= maxW : OK<br>
- maxW&lt; N &lt;= maxC : warning<br>
- maxC &lt; N : critical<br>
</p>
<p class="SectionTitle">Memory checks </p>
<p class="SectionBody">The <b>-m </b>option can check the memory used
by the selected processes.<br>
By default, this will select the process wich use the maximum memory.
The <b>-a</b> switch will make an average<br>
<br>
Ex : <b>-m 7,20 </b>will send a warning if a process uses more than
7 Mb, and critical for more than 20Mb.</p>
<p class="SectionTitle">CPU checks</p>
<p class="SectionBody">When you use the <b>-u </b>option, a temporary
file will be created in &quot;/tmp&quot; by default : this can be
changed at the beginning of the script. <br>
The file name will be : tmp_Nagios_proc.&lt;host IP&gt;.&lt;process
filter&gt;.</p>
<p class="SectionBody">The -u option will add all the cpu used by
all selected process and the make the check<br>
</p>
<p class="SectionBody"><b>-u 91,95</b> : will send a warning if more
than 91% of cpu is used, and critical if more than 95% is used.</p>
<p class="SectionBody">On multiprocessor hosts, the % of cpu use can
be &gt; 100% : on a 4 CPU host, cpu usage can go up to 400% (the
script doesn't check if a host is multiprocessor or not).</p>
<p class="SectionBody">The script curently wants a minimum of 5 minutes
between values taken from host (can be changed at the beginning
of the scripts). You can check more than once every 5 minutes but
don't put check-interval to more than 15 minutes.<br>
When the script doesn't have enough data to compute the CPU use
(for example, the first time it is run), then it will return a UNKNOWN
status. </p>
<p class="SectionBody"><b>Msg size option </b>(<i>-o</i><b><i> </i></b>option)</p>
<p class="SectionBody">In case you get a &quot;ERROR: running table
: Message size exceeded maxMsgSize&quot; error, you may need to
adjust the maxMsgSize, i.e. the maximum size of snmp message with
the -o option. Try a value with the -o AND the -v option : the script
will output the actual value so you can add some octets to it with
the -o option.</p>
<p class="SectionBody"><span class="SectionTitle">SNMP Login</span><br>
</p>
<p class="SectionBody">See <a href="index_info.html">snmp info page</a></p>
<p class="SectionTitle">Requirements :</p>
<p class="SectionBody"> - Perl in /usr/bin/perl - or just run 'perl
script' <br>
- Net::SNMP<br>
- file 'utils.pm' in plugin diretory<br>
</p>
<p class="SectionBody"><a href="check_snmp_process.pl" class="SectionTitle">Dowload
latest version : 1.5</a> </p>
<p class="SectionBody"><a href="index_commands.html" class="SectionTitle">Configurations
examples</a></p>
<p class="SectionBody"><span class="SectionTitle">Changelog</span>
: On CVS repository on sourceforge : <a href="http://nagios-snmp.cvs.sourceforge.net/nagios-snmp/plugins/">http://nagios-snmp.cvs.sourceforge.net/nagios-snmp/plugins/</a>.</p>
<p class="SectionTitle">Examples :</p>
<p class="SectionBody"><br>
All examples below are considering the script is local directory.
Host to be checked is 127.0.0.1 with snmp community &quot;public&quot;.</p>
<p class="SectionBody">If multiple interfaces are selected, all must
be up to get an OK result</p>
<table border="1" cellspacing="5" width="819">
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<td class="NewsItemDate" valign = top width="261">
<p>Get help
</td>
<td class="SectionBody" width="533">
<p>./check_snmp_process.pl <b>-h</b></p>
</td>
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<td class="NewsItemDate" valign = top width="261">snmpv3 login</td>
<td class="SectionBody" width="533">./check_snmp_process.pl -H
127.0.0.1 -l login -x passwd<b></b></td>
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<td class="NewsItemDate" valign = top width="261">
<p>Check if at least one process matching http is running
</td>
<td class="SectionBody" width="533">
<p>./check_snmp_process.pl -H 127.0.0.1 -C public <b>-n http</b></p>
</td>
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<td class="NewsItemDate" valign = top width="261">
<p align="right">Result example :
</td>
<td class="SectionBody" width="533">
<p>3 process matching http : &gt; 0 : OK</p>
</td>
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<td class="NewsItemDate" valign = top width="261">
<p>Check if at least 3 process matching http are running
</td>
<td class="SectionBody" width="533">
<p>./check_snmp_process.pl -H 127.0.0.1 -C public -n http<b>
-w 2 -c 0</b></p>
</td>
</tr>
<tr>
<td class="NewsItemDate" valign = top width="261">
<div align="right">Result example : <br>
(&lt;=2 will return warning, 0 critical)</div>
</td>
<td class="SectionBody" width="533">3 process matching httpd :
&gt; 2 : OK</td>
</tr>
<tr>
<td class="NewsItemDate" valign = top width="261">Check if at
least one process named &quot;httpd&quot; exists (no regexp)</td>
<td class="SectionBody" width="533">./check_snmp_process.pl -H
127.0.0.1 -C public -n http <b>-r</b></td>
</tr>
<tr>
<td class="NewsItemDate" valign = top width="261">
<p align="right">Result example : </p>
</td>
<td class="SectionBody" width="533">3 process <b>named</b> httpd
: &gt; 0 : OK</td>
</tr>
<tr>
<td class="NewsItemDate" valign = top width="261">Check process
by their full path : check process of /opt/soft/bin/ (at least
one) </td>
<td class="SectionBody" width="533">./check_snmp_process.pl -H
127.0.0.1 -C public <b>-n /opt/soft/bin/ -f</b></td>
</tr>
<tr>
<td class="NewsItemDate" valign = top width="261">Check that at
least 3 process but not more than 8 are running</td>
<td class="SectionBody" width="533">./check_snmp_process.pl -H
127.0.0.1 -C public -n http <b>-w 3,8 -c 0,15</b></td>
</tr>
<tr>
<td class="NewsItemDate" valign = top width="261">Same checks
+ checks maximum memory used by process (in Mb) : warning and
critical levels</td>
<td class="SectionBody" width="533">./check_snmp_process.pl -H
127.0.0.1 -C public -n http -w 3,8 -c 0,15 <b>-m 9,25</b></td>
</tr>
<tr>
<td class="NewsItemDate" valign = top width="261">Same check but
sum all CPU used by all selected process</td>
<td class="SectionBody" width="533">./check_snmp_process.pl -H
127.0.0.1 -C public -n http -w 3,8 -c 0,15 -m 9,25 <b>-u 70,99</b></td>
</tr>
</table>
<p class="NewsItemDate">Output of check_snmp_process.pl -h</p>
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<td class="SectionBody" valign = top>
<p>SNMP Process Monitor for Nagios version 1.5<br>
GPL licence, (c)2004-2006 Patrick Proy</p>
<p>Usage: ./check_snmp_process.pl [-v] -H &lt;host&gt; -C &lt;snmp_community&gt; [-2] | (-l login -x passwd) [-p &lt;port&gt;] -n &lt;name&gt; [-w &lt;min_proc&gt;[,&lt;max_proc&gt;] -c &lt;min_proc&gt;[,max_proc] ] [-m&lt;warn Mb&gt;,&lt;crit Mb&gt; -a -u&lt;warn %&gt;,&lt;crit%&gt; -d&lt;delta&gt; ] [-t &lt;timeout&gt;] [-o &lt;octet_length&gt;] [-f -A -F ] [-r] [-V] [-g]<br>
-v, --verbose<br>
print extra debugging information (and lists all storages)<br>
-h, --help<br>
print this help message<br>
-H, --hostname=HOST<br>
name or IP address of host to check<br>
-C, --community=COMMUNITY NAME<br>
community name for the host's SNMP agent (implies SNMP v1 or v2c with option)<br>
-l, --login=LOGIN ; -x, --passwd=PASSWD, -2, --v2c<br>
Login and auth password for snmpv3 authentication <br>
If no priv password exists, implies AuthNoPriv <br>
-2 : use snmp v2c<br>
-X, --privpass=PASSWD<br>
Priv password for snmpv3 (AuthPriv protocol)<br>
-L, --protocols=&lt;authproto&gt;,&lt;privproto&gt;<br>
&lt;authproto&gt; : Authentication protocol (md5|sha : default md5)<br>
&lt;privproto&gt; : Priv protocole (des|aes : default des) <br>
-p, --port=PORT<br>
SNMP port (Default 161)<br>
-n, --name=NAME<br>
Name of the process (regexp)<br>
No trailing slash !<br>
-r, --noregexp<br>
Do not use regexp to match NAME in description OID<br>
-f, --fullpath<br>
Use full path name instead of process name <br>
(Windows doesn't provide full path name)<br>
-A, --param<br>
Add parameters to select processes.<br>
ex : &quot;named.*-t /var/named/chroot&quot; will only select named process with this parameter <br>
-F, --perfout<br>
Add performance output<br>
outputs : memory_usage, num_process, cpu_usage<br>
-w, --warn=MIN[,MAX]<br>
Number of process that will cause a warning <br>
-1 for no warning, MAX must be &gt;0. Ex : -w-1,50<br>
-c, --critical=MIN[,MAX]<br>
number of process that will cause an error (<br>
-1 for no critical, MAX must be &gt;0. Ex : -c-1,50<br>
Notes on warning and critical : <br>
with the following options : -w m1,x1 -c m2,x2<br>
you must have : m2 &lt;= m1 &lt; x1 &lt;= x2<br>
you can omit x1 or x2 or both<br>
-m, --memory=WARN,CRIT<br>
checks memory usage (default max of all process)<br>
values are warning and critical values in Mb<br>
-a, --average<br>
makes an average of memory used by process instead of max<br>
-u, --cpu=WARN,CRIT<br>
checks cpu usage of all process<br>
values are warning and critical values in % of CPU usage<br>
if more than one CPU, value can be &gt; 100% : 100%=1 CPU<br>
-d, --delta=seconds<br>
make an average of &lt;delta&gt; seconds for CPU (default 300=5min) <br>
-g, --getall<br>
In some cases, it is necessary to get all data at once because<br>
process die very frequently.<br>
This option eats bandwidth an cpu (for remote host) at breakfast.<br>
-o, --octetlength=INTEGER<br>
max-size of the SNMP message, usefull in case of Too Long responses.<br>
Be carefull with network filters. Range 484 - 65535, default are<br>
usually 1472,1452,1460 or 1440. <br>
-t, --timeout=INTEGER<br>
timeout for SNMP in seconds (Default: 5)<br>
-V, --version<br>
prints version number<br>
Note : <br>
CPU usage is in % of one cpu, so maximum can be 100% * number of CPU <br>
example : <br>
Browse process list : &lt;script&gt; -C &lt;community&gt; -H &lt;host&gt; -n &lt;anything&gt; -v <br>
the -n option allows regexp in perl format : <br>
All process of /opt/soft/bin : -n /opt/soft/bin/ -f<br>
All 'named' process : -n named<br>
<br>
</p>
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<p class="SectionBody">This project is hosted on : <br>
<A href="http://sourceforge.net/projects/nagios-snmp"> <IMG src="http://sourceforge.net/sflogo.php?group_id=134917&type=5" width="210" height="62" border="0" alt="SourceForge.net Logo" /></A>
</p>
<p class="SectionBody"> Nagios and the Nagios logo are registered
trademarks of Ethan Galstad.</p>
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