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	<title>Smemorando &#187; Nagios</title>
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		<title>Nagios NSClient++ per monitorare server Windows</title>
		<link>http://www.smemorando.com/2009/10/02/nagios-nsclient-per-monitorare-server-windows/</link>
		<comments>http://www.smemorando.com/2009/10/02/nagios-nsclient-per-monitorare-server-windows/#comments</comments>
		<pubDate>Fri, 02 Oct 2009 18:58:07 +0000</pubDate>
		<dc:creator>Cristian</dc:creator>
				<category><![CDATA[Nagios]]></category>
		<category><![CDATA[check_nt]]></category>
		<category><![CDATA[check_nt_logon_errors]]></category>
		<category><![CDATA[check_nt_paging_file_useage]]></category>
		<category><![CDATA[check_nt_sql_server_connections]]></category>
		<category><![CDATA[commands]]></category>
		<category><![CDATA[NSClient++]]></category>

		<guid isPermaLink="false">http://www.smemorando.com/?p=177</guid>
		<description><![CDATA[NSClient++ è un agent per server windows disponibile per sistemi X32, X64 ed Itanium che permette a Nagios di eseguire innumerevoli check a servizi, processi e molto altro. Una volta scaricata dal sito nsclient.org la versione corretta per il vostro sistema ed installata, basta personalizzare il file nsc.ini presente nella directory in cui è stato [...]]]></description>
			<content:encoded><![CDATA[<p style="text-align: justify;">NSClient++ è un agent per server windows disponibile per sistemi X32, X64 ed Itanium che permette a Nagios di eseguire innumerevoli check a servizi, processi e molto altro.</p>
<p style="text-align: justify;">Una volta scaricata dal sito <a href="http://nsclient.org/nscp/downloads" target="_blank" onclick="pageTracker._trackPageview('/outgoing/nsclient.org/nscp/downloads?referer=');">nsclient.org</a> la versione corretta per il vostro sistema ed installata, basta personalizzare il file nsc.ini presente nella directory in cui è stato installato l&#8217;agent così da attivare i moduli aggiuntivi necessario ed impostare una password di sicurezza che non è obbligatoria ma a mio avviso vivamente consigliata.</p>
<p style="text-align: justify;">E&#8217; bene anche controllare le impostazioni del servizio che è stato creato NSClientpp e inpostare sul Log On il flag su Local System account e Allow service to interact with desktop.</p>
<p style="text-align: center;"><a title="NSClient" href="http://www.smemorando.com/wp-content/uploads/2009/10/nsclient1-1024x497.gif" target="_blank"><img class="aligncenter size-large wp-image-185" title="nsclient" src="http://www.smemorando.com/wp-content/uploads/2009/10/nsclient1-1024x497.gif" alt="nsclient" width="531" height="257" /></a></p>
<p style="text-align: center;"><a title="NSClient" href="http://www.smemorando.com/wp-content/uploads/2009/10/nsclient2-1024x497.gif" target="_blank"><img class="aligncenter size-large wp-image-186" title="nsclient" src="http://www.smemorando.com/wp-content/uploads/2009/10/nsclient2-1024x497.gif" alt="nsclient" width="531" height="257" /></a></p>
<p style="text-align: justify;">Io ho installato una versione un pò vecchia, ho visto che ora c&#8217;è la 0.3.7&#8230;</p>
<p>Per attivare i moduli basta decommentare le righe associate ai moduli di cui si ha bisogno all&#8217;interno del file nsc.ini.</p>
<p>di seguito la parti minime da personalizzare sul file nsc.ini che comunque con l&#8217;ultima versione del client dovrebbe poter essere possibile impostare già dalla gui di installazione:</p>
<p><strong>[modules]<br />
;# NSCLIENT++ MODULES<br />
;# A list with DLLs to load at startup.<br />
;  You will need to enable some of these for NSClient++ to work.<br />
; ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !<br />
; *                                                               *<br />
; * N O T I C E ! ! ! &#8211; Y O U   H A V E   T O   E D I T   T H I S *<br />
; *                                                               *<br />
; ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !<br />
FileLogger.dll<br />
CheckSystem.dll<br />
CheckDisk.dll<br />
NSClientListener.dll<br />
NRPEListener.dll<br />
SysTray.dll<br />
CheckEventLog.dll<br />
CheckHelpers.dll<br />
;CheckWMI.dll<br />
;<br />
; RemoteConfiguration IS AN EXTREM EARLY IDEA SO DONT USE FOR PRODUCTION ENVIROMNEMTS!<br />
;RemoteConfiguration.dll<br />
; NSCA Agent is a new beta module use with care!<br />
NSCAAgent.dll<br />
; LUA script module used to write your own &#8220;check deamon&#8221; (sort of) early beta.<br />
LUAScript.dll<br />
; Script to check external scripts and/or internal aliases, early beta.<br />
CheckExternalScripts.dll<br />
; Check other hosts through NRPE extreme beta and probably a bit dangerous! <img src='http://www.smemorando.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /><br />
NRPEClient.dll<br />
; Extreamly early beta of a task-schedule checker<br />
CheckTaskSched.dll</strong></p>
<p><strong>[Settings]<br />
;# OBFUSCATED PASSWORD<br />
;  This is the same as the password option but here you can store the password in an obfuscated manner.<br />
;  *NOTICE* obfuscation is *NOT* the same as encryption, someone with access to this file can still figure out the<br />
;  password. Its just a bit harder to do it at first glance.<br />
;obfuscated_password=Jw0KAUUdXlAAUwASDAAB<br />
;<br />
;# PASSWORD<br />
;  This is the password (-s) that is required to access NSClient remotely. If you leave this blank everyone will be able to access the daemon remotly.<br />
password=</strong><span style="text-decoration: line-through;">QUI INSERISCO LA PASSWORD A PROTEZIONE DELL&#8217;AGENT</span><br />
<strong>;<br />
;# ALLOWED HOST ADDRESSES<br />
;  This is a comma-delimited list of IP address of hosts that are allowed to talk to the all daemons.<br />
;  If leave this blank anyone can access the deamon remotly (NSClient still requires a valid password).<br />
;  The syntax is host or ip/mask so 192.168.0.0/24 will allow anyone on that subnet access<br />
allowed_hosts=</strong><span style="text-decoration: line-through;">QUI INSERISCO L&#8217;IP DEL MIO SERVER NAGIOS</span><br />
&#8230;&#8230;&#8230;.</p>
<p>Ora che lato windows abbiamo ultimato la configurazione è necessario definire l&#8217;host, i servizi da monitorare ed inserire nei check presenti sul file command.cfg la password messa a protezione del client NSclient installato sul server windows.</p>
<p>Di seguito tutte le definizioni da inserire nei file di configurazione lato Nagios.</p>
<p>Riga da aggiungere nel file degli hosts.cfg <em>(che dovrà essere a sua volta incluso nel file di configurazione di nagios.cfg)</em></p>
<p><strong># Definizioni host 192.168.1.101<br />
define host{<br />
host_name                         192.168.1.101<br />
alias                                      192.168.1.101<br />
address                               192.168.1.101<br />
check_command            check-host-alive<br />
check_interval                5<br />
retry_interval                 1<br />
max_check_attempts  5<br />
check_period                  24&#215;7<br />
contact_groups              admins<br />
process_perf_data        0<br />
retain_nonstatus_information    0<br />
notification_interval           30<br />
notification_period             24&#215;7<br />
notification_options           d,u,r<br />
parents                                     192.168.1.1<br />
}<br />
</strong></p>
<p>Righe da aggiungere o modificare se già presenti nel file services.cfg</p>
<p><strong># Create a service for monitoring CPU USAGE<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     CPU Load<br />
check_command           check_nt!CPULOAD!-l 5,80,90<br />
}</strong></p>
<p><strong># Create a service for monitoring ping<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     PING<br />
check_command           check-host-alive<br />
}</strong></p>
<p><strong># Create a service for monitoring MEMORY USAGE<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     Memory Usage<br />
check_command           check_nt!MEMUSE!-w 80 -c 90<br />
}</strong></p>
<p><strong># Create a service for monitoring C:\ disk usage<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     C:\ Drive Space<br />
check_command           check_nt!USEDDISKSPACE!-l c -w 85 -c 95<br />
}</strong></p>
<p><strong># Create a service for monitoring S:\ disk usage<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     S:\ Drive Space<br />
check_command           check_nt!USEDDISKSPACE!-l s -w 85 -c 95<br />
}</strong></p>
<p><strong># Create a service for monitoring sql server connections<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     SQL Server connection<br />
check_command           check_nt_sql_server_connections<br />
}</strong></p>
<p><strong># Create a service for monitoring paging file useage<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     Utilizza file paging<br />
check_command           check_nt_paging_file_useage<br />
}</strong></p>
<p><strong># Create a service for monitoring error logs<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     Error logs<br />
check_command           check_nt_logon_errors<br />
}</strong></p>
<p><strong># Create a service for monitoring W3SVC service<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     W3SVC<br />
check_command           check_nt!SERVICESTATE!-d SHOWALL -l W3SVC<br />
}</strong></p>
<p><strong># Create a service for monitoring IIS Admin Service<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     IIS Admin Service<br />
check_command           check_nt!SERVICESTATE!-d SHOWALL -l IISADMIN<br />
}</strong></p>
<p><strong># Create a service for monitoring HTTS SSL service<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     HTTP SSL<br />
check_command           check_nt!SERVICESTATE!-d SHOWALL -l HTTPFilter<br />
}</strong></p>
<p><strong># Create a service for monitoring Windows TIME service<br />
define service{<br />
use                     generic-service<br />
host_name               192.168.1.101<br />
service_description     Servizio Windows TIME<br />
check_command           check_nt!SERVICESTATE!-d SHOWALL -l W32Time<br />
}</strong></p>
<p>righe da aggiungere o modificare se già presenti nel file commands.cfg</p>
<p><strong># &#8216;check_nt&#8217; command definition<br />
define command{<br />
command_name    check_nt<br />
command_line    $USER1$/check_nt -H $HOSTADDRESS$ -p 12489 -s </strong><span style="text-decoration: line-through;">PASSWORD INSERITA NEL FILE NSC.INI</span><strong> -v $ARG1$ $ARG2$<br />
}</strong></p>
<p><strong># &#8216;check_nt&#8217; command definition per error log<br />
define command{<br />
command_name     check_nt_logon_errors<br />
command_line     $USER1$/check_nt -H $HOSTADDRESS$ -s </strong><span style="text-decoration: line-through;">PASSWORD INSERITA NEL FILE NSC.INI</span> <strong>-p 12489 -v COUNTER -l &#8220;\\Server\\Errors Logon&#8221;,&#8221;Logon Errors since last reboot is %.f&#8221; -w 50 -c 150<br />
}</strong></p>
<p><strong>#Paging File Usage<br />
define command{<br />
command_name     check_nt_paging_file_useage<br />
command_line     $USER1$/check_nt -H $HOSTADDRESS$ -s</strong> <span style="text-decoration: line-through;">PASSWORD INSERITA NEL FILE NSC.INI</span> <strong>-p 12489 -v COUNTER  -l &#8220;\\Paging File(_Total)\\% Usage&#8221;,&#8221;Paging file usage is %.2f %%&#8221; -w 30 -c 60<br />
}</strong></p>
<p><strong>#SQL Server Connections<br />
define command{<br />
command_name     check_nt_sql_server_connections<br />
command_line     $USER1$/check_nt -H $HOSTADDRESS$ -s</strong> <span style="text-decoration: line-through;">PASSWORD INSERITA NEL FILE NSC.INI</span> <strong>-p 12489 -v COUNTER -l &#8220;\\SQLServer:General Statistics\\User Connections&#8221;,&#8221;SQL Server Connections are %.f&#8221; -w 1500 -c 2000<br />
}</strong></p>
<p style="text-align: justify;">In conclusione una volta installato e configurato NSClient, definito il nuovo host, i nuovi services e i nuovi commands sui rispettivi file di configurazione  richiamati  dal file di configurazione di Nagios basta fare un  /etc/init.d/nagios reload e se non ci sono errori si dovrebbe ottenere qualcosa del genere.</p>
<p style="text-align: center;"><strong><a title="Nagios check_nt" href="http://www.smemorando.com/wp-content/uploads/2009/10/nagios.gif" target="_blank"><img class="aligncenter size-full wp-image-202" title="nagios" src="http://www.smemorando.com/wp-content/uploads/2009/10/nagios.gif" alt="nagios" width="576" height="461" /></a></strong></p>
]]></content:encoded>
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		</item>
		<item>
		<title>Installare e configurare NagiosGrapher</title>
		<link>http://www.smemorando.com/2009/09/16/installare-e-configurare-nagiosgrapher/</link>
		<comments>http://www.smemorando.com/2009/09/16/installare-e-configurare-nagiosgrapher/#comments</comments>
		<pubDate>Wed, 16 Sep 2009 17:04:58 +0000</pubDate>
		<dc:creator>Cristian</dc:creator>
				<category><![CDATA[Nagios]]></category>
		<category><![CDATA[NagiosGrapher]]></category>
		<category><![CDATA[NagiosGrapher-1.7.1.tar.gz]]></category>

		<guid isPermaLink="false">http://www.smemorando.com/?p=160</guid>
		<description><![CDATA[NagiosGrapher si integra con Nagios e sfruttando rrd permette di popolare dei grafici sull&#8217;andamento temporale dei servizi posti sotto monitoraggio, di seguito i passi da seguire per installarlo e configurarlo al meglio su ubuntu server. Per prima cosa scarico l&#8217;ultima versione stabile disponibile dal sito https://www.nagiosforge.org/gf/project/nagiosgrapher/frs/ wget https://www.nagiosforge.org/gf/download/frsrelease/135/285/NagiosGrapher-1.7.1.tar.gz poi scompatto il tar.gz ed entro nella [...]]]></description>
			<content:encoded><![CDATA[<p>NagiosGrapher si integra con Nagios e sfruttando rrd permette di popolare dei grafici sull&#8217;andamento temporale dei servizi posti sotto monitoraggio, di seguito i passi da seguire per installarlo e configurarlo al meglio su ubuntu server.</p>
<p style="text-align: center;">
<p style="text-align: center;"><img class="aligncenter size-large wp-image-173" title="nagios-screenshot" src="http://www.smemorando.com/wp-content/uploads/2009/09/nagios-screenshot-1024x634.gif" alt="nagios-screenshot" width="581" height="360" /></p>
<p>Per prima cosa scarico l&#8217;ultima versione stabile disponibile dal sito https://www.nagiosforge.org/gf/project/nagiosgrapher/frs/</p>
<p><strong>wget https://www.nagiosforge.org/gf/download/frsrelease/135/285/NagiosGrapher-1.7.1.tar.gz</strong></p>
<p>poi scompatto il tar.gz ed entro nella cartella:<br />
<strong>tar xzf NagiosGrapher-1.7.1.tar.gz<br />
</strong><strong>cd NagiosGrapher-1.7.1<br />
</strong></p>
<p>installo i pacchetti per proseguire nell&#8217;installazione di NagiosGrapher:<br />
<strong>apt-get install autoconf rrdtool perl perl-base perl-modules libcalendar-simple-perl libgd-gd2-perl perlmagick librrds-perl liburi-perl</strong></p>
<p>e passo all&#8217;installazione del pacchetto scaricato prima:<br />
<strong>autoconf<br />
./configure<br />
make testdeps<br />
make install<br />
make update</strong></p>
<p>se la procedura si è completata senza errori aggiungo le righe sottostanti al file di configurazione di nagios /usr/local/nagios/etc/nagios.cfg:<br />
<strong># per Nagiosgrapher<br />
cfg_dir=/usr/local/nagios/etc/serviceext<br />
process_performance_data=1<br />
service_perfdata_file=/usr/local/nagios/var/service-perfdata<br />
service_perfdata_file_template=$HOSTNAME$\t$SERVICEDESC$\t$SERVICEOUTPUT$\t$SERVICEPERFDATA$\t$TIMET$<br />
service_perfdata_file_mode=a<br />
service_perfdata_file_processing_interval=30<br />
service_perfdata_file_processing_command=process-service-perfdata-file</strong></p>
<p>nelle varie guide disponibili su internet in molti casi viene riportata &#8216;erroneamente&#8217; questa stringa<strong>:</strong><em><br />
service_perfdata_file_template=$HOSTNAME$ $SERVICEDESC$ $SERVICEOUTPUT$ $SERVICEPERFDATA$ $TIMET$</em><strong> </strong></p>
<p><strong></strong>al posto di questa:<br />
<em>service_perfdata_file_template=$HOSTNAME$\t$SERVICEDESC$\t$SERVICEOUTPUT$\t$SERVICEPERFDATA$\t$TIMET$</em><strong><strong><br />
</strong></strong>che non permette la generazione e popolazione dei file sotto /usr/local/nagios/var/rrd e la conseguente mancata visualizzazione dei grafici quindi almeno in questa installazione è da evitare se lo si vuol far funzionare</p>
<p>poi aggiungo le righe che seguono al file /usr/local/nagios/etc/objects/commands.cfg:<br />
<strong># per NagiosGrapher<br />
define command{<br />
command_name process-service-perfdata-file<br />
command_line mv /usr/local/nagios/var/service-perfdata /usr/local/nagios/var/service-perfdata.$TIMET$<br />
}</strong></p>
<p>ora in base ai check che ho attivato attivo anche i grafici corrispondenti, faccio qualche esempio..</p>
<p>se sto monitorando tramite un check_ping la risposta di un host e nel file di configurazione dei servizi (services.cfg) ho definito come <em>service_description <strong>PING basterà attivare il file</strong></em> check_ping.ncfg.disabled semplicemente muovendolo in un altro file così come segue:<br />
<strong>mv check_ping.ncfg.disabled check_ping.ncfg<br />
</strong></p>
<p>ed avviare nagios e nagios_grapher:<br />
<strong>/etc/init.d/nagios_grapher start<br />
/etc/init.d/nagios restart</strong></p>
<p>aspettare qualche minuto che si generino in automatico i file di configurazione sotto /usr/local/nagios/etc/serviceext e che si generino e popolino i file in /usr/local/nagios/var/rrd/ e poi riavviare nagios_grapher e far ricaricare la configurazione a nagios<strong>:</strong><strong><br />
/etc/init.d/nagios_grapher restart<br />
</strong><strong>/etc/init.d/nagios  reload</strong></p>
<p>A questo punto dovrebbe apparire accanto alla descrizione del servizio un&#8217;icona cliccabile che permetterà di visualizzare i grafici che mammano verranno popolati. <strong><br />
</strong></p>
]]></content:encoded>
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		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>nagiosDataNotUpToDate: NDOMy: NDO data to old (Backend ndomy_1) [SOLVED] [RISOLTO]</title>
		<link>http://www.smemorando.com/2009/08/24/nagiosdatanotuptodate-ndomy-ndo-data-to-old-backend-ndomy_1-solved-risolto/</link>
		<comments>http://www.smemorando.com/2009/08/24/nagiosdatanotuptodate-ndomy-ndo-data-to-old-backend-ndomy_1-solved-risolto/#comments</comments>
		<pubDate>Mon, 24 Aug 2009 18:57:24 +0000</pubDate>
		<dc:creator>Cristian</dc:creator>
				<category><![CDATA[Nagios]]></category>
		<category><![CDATA[DataNotUpToDate]]></category>
		<category><![CDATA[nagvis]]></category>
		<category><![CDATA[ndo]]></category>
		<category><![CDATA[NDOMy]]></category>
		<category><![CDATA[ndoutils]]></category>

		<guid isPermaLink="false">http://www.smemorando.com/?p=111</guid>
		<description><![CDATA[Utilizzado NDOutils e NagVis può capitare di vedersi restituire un errore di questo tipo: nagiosDataNotUpToDate: NDOMy: NDO data to old (Backend ndomy_1) se l&#8217;avvio di NDO è stato integrato nel file di configurazione di nagios (nagios.conf) basta stoppare nagios con: /etc/init.d/nagios stop verificare se il processo è stato stoppato utilizzando: ps -aux &#124; grep ndo* [...]]]></description>
			<content:encoded><![CDATA[<p>Utilizzado <span>NDO</span>utils e NagVis può capitare di vedersi restituire un errore di questo tipo:<br />
<em> nagiosDataNotUpToDate: NDOMy: NDO data to old (Backend ndomy_1)</em></p>
<p>se l&#8217;avvio di NDO è stato integrato nel file di configurazione di nagios (nagios.conf) basta stoppare nagios con:<br />
<strong> /etc/init.d/nagios stop</strong></p>
<p>verificare se il processo è stato stoppato utilizzando:<br />
<strong>ps -aux | grep ndo*</strong></p>
<p>e nel caso in cui ndo sia ancora in esecuzione ed ottengo come risultato qualcosa di questo tipo..<br />
root     2529  &#8230;&#8230;.  S   20:47   0:00 /usr/local/nagios/bin/ndo2db-3x -c /usr/local/nagios/etc/ndo2db.cf</p>
<p>basta lanciare un:<br />
<strong>kill -9 2529</strong></p>
<p>il valore del quale vado a fare il kill corrisponde all&#8217;id del processo.</p>
<p>Una volta fatto tutto questo basta cancellare il file ndo.sock:<strong><br />
rm /usr/local/nagios/var/<span>ndo</span>.sock</strong> (il percorso potrebbe essere differente<strong>)<br />
</strong></p>
<p>ed avviare nuovamente nagios:<br />
<strong>/etc/init.d/nagios start</strong></p>
]]></content:encoded>
			<wfw:commentRss>http://www.smemorando.com/2009/08/24/nagiosdatanotuptodate-ndomy-ndo-data-to-old-backend-ndomy_1-solved-risolto/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Can&#8217;t locate Net/SNMP.pm [SOLVED] [RISOLTO]</title>
		<link>http://www.smemorando.com/2009/08/13/cant-locate-netsnmp-pm-solved-risolto/</link>
		<comments>http://www.smemorando.com/2009/08/13/cant-locate-netsnmp-pm-solved-risolto/#comments</comments>
		<pubDate>Thu, 13 Aug 2009 18:46:43 +0000</pubDate>
		<dc:creator>Cristian</dc:creator>
				<category><![CDATA[Nagios]]></category>
		<category><![CDATA[check_snmp]]></category>
		<category><![CDATA[snmp]]></category>

		<guid isPermaLink="false">http://www.smemorando.com/?p=92</guid>
		<description><![CDATA[nel tentativo di utilizzare lo script check_snmp_mem.pl per monitorare l&#8217;snmp con Nagios può capitare di vedersi restituire l&#8217;errore seguente Can&#8217;t locate Net/SNMP.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl /5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share /perl/5.10 /usr/local/lib/site_perl .) at ./check_snmp_mem.pl line 16. questo è dovuto al fatto che non si è provveduto ad installare libnet-snmp-perl quindi [...]]]></description>
			<content:encoded><![CDATA[<p>nel tentativo di utilizzare lo script <a href="http://nagios.manubulon.com/check_snmp_mem.pl" target="_blank" onclick="pageTracker._trackPageview('/outgoing/nagios.manubulon.com/check_snmp_mem.pl?referer=');">check_snmp_mem.pl</a> per monitorare l&#8217;snmp con Nagios può capitare di vedersi restituire l&#8217;errore seguente</p>
<p><strong><span style="font-size: 85%;">Can&#8217;t locate Net/SNMP.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl</span></strong><br />
<strong><span style="font-size: 85%;">/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share</span></strong><br />
<strong><span style="font-size: 85%;">/perl/5.10 /usr/local/lib/site_perl .) at ./check_snmp_mem.pl line 16.</span></strong></p>
<p>questo è dovuto al fatto che non si è provveduto ad installare libnet-snmp-perl quindi basta lanciare <span style="font-size: 85%;">(su Ubuntu):<br />
</span><strong>sudo apt-get install libnet-snmp-perl</strong></p>
<p>e riprovare.</p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Principali file di configurazione in Nagios</title>
		<link>http://www.smemorando.com/2009/08/11/principali-file-di-configurazione-in-nagios/</link>
		<comments>http://www.smemorando.com/2009/08/11/principali-file-di-configurazione-in-nagios/#comments</comments>
		<pubDate>Tue, 11 Aug 2009 08:46:46 +0000</pubDate>
		<dc:creator>Cristian</dc:creator>
				<category><![CDATA[Nagios]]></category>
		<category><![CDATA[check-host-alive]]></category>
		<category><![CDATA[commands]]></category>
		<category><![CDATA[configurazione nagios]]></category>
		<category><![CDATA[contact]]></category>
		<category><![CDATA[hosts-group]]></category>
		<category><![CDATA[monitoraggio]]></category>
		<category><![CDATA[snmp]]></category>
		<category><![CDATA[snmpwalk]]></category>
		<category><![CDATA[Tutto Nagios]]></category>

		<guid isPermaLink="false">http://www.smemorando.com/?p=32</guid>
		<description><![CDATA[Il file di configurazione di Nagios viene collocato di default sotto /etc/nagios/nagios.cfg &#8211; /usl/local/nagios/etc/nagios.cfg dipende dalla distribuzione che utilizzate. Per una questione di ordine è a mio avviso meglio suddividere le configurazioni degli host, service, command, ecc. su diversi file ed includerli all&#8217;interno del nostro nagios.cfg come negli esempi che vedremo poi sotto e come suggerito [...]]]></description>
			<content:encoded><![CDATA[<p><span>Il file di configurazione di Nagios viene collocato di default sotto <strong>/etc/nagios/nagios.cfg &#8211; /usl/local/nagios/etc/nagios.cfg</strong> dipende dalla distribuzione che utilizzate. </span></p>
<p><span>Per una questione di ordine è a mio avviso meglio suddividere le configurazioni degli host, service, command, ecc. su diversi file ed includerli all&#8217;interno del nostro nagios.cfg come negli esempi che vedremo poi sotto e come suggerito anche dagli esempi commentati già presenti nel file nagios.cfg.</span></p>
<p style="text-align: center;">
<p><em>## &#8212;&#8211; ESTRATTO DAL FILE NAGIOS.CFG<br />
# Definitions services and hosts<br />
cfg_file=/usr/local/nagios/etc/services.cfg<br />
cfg_file=/usr/local/nagios/etc/hosts.cfg</em><em><br />
cfg_file=/usr/local/nagios/etc/contacts.cfg<br />
cfg_file=/usr/local/nagios/etc/contact-group.cfg</em><br />
<em>cfg_file=/usr/local/nagios/etc/hosts-extinfo.cfg<br />
cfg_file=/usr/local/nagios/etc/timeperiods.cfg<br />
cfg_file=/usr/local/nagios/etc/commands.cfg</em></p>
<p><em>## &#8212;&#8212;- ESTRATTO DAL FILE HOSTS.CFG<br />
# Definizioni host 192.168.0.101<br />
define host{<br />
host_name 192.168.0.101<br />
alias 192.168.0.101<br />
address 192.168.0.101<br />
check_command check-host-alive<br />
check_interval 5<br />
retry_interval 1<br />
max_check_attempts 5<br />
check_period 24&#215;7<br />
contact_groups admins<br />
process_perf_data 0<br />
retain_nonstatus_information 0<br />
notification_interval 30<br />
notification_period 24&#215;7<br />
notification_options d,u,r<br />
parents 192.168.0.1<br />
}</em></p>
<p><em># Definizioni host 192.168.0.102 &#8211; Cisco VPNConcentrator<br />
define host{<br />
host_name 192.168.0.102<br />
alias 192.168.0.102<br />
address 192.168.0.102<br />
check_command check-host-alive<br />
check_interval 5<br />
retry_interval 1<br />
max_check_attempts 5<br />
check_period 24&#215;7<br />
contact_groups admins<br />
process_perf_data 0<br />
retain_nonstatus_information 0<br />
notification_interval 30<br />
notification_period 24&#215;7<br />
notification_options d,u,r<br />
parents 192.168.0.1<br />
}</em></p>
<p><em># Definizioni host 192.168.0.103<br />
define host{<br />
host_name 192.168.0.103<br />
alias 192.168.0.103<br />
address 192.168.0.103<br />
check_command check-host-alive<br />
check_interval 5<br />
retry_interval 1<br />
max_check_attempts 5<br />
check_period 24&#215;7<br />
contact_groups admins<br />
process_perf_data 0<br />
retain_nonstatus_information 0<br />
notification_interval 30<br />
notification_period 24&#215;7<br />
notification_options d,u,r<br />
parents 192.168.0.1<br />
}</em></p>
<p><em># Definizioni host 192.168.0.110<br />
define host{<br />
host_name 192.168.0.110<br />
alias 192.168.0.110<br />
address 192.168.0.110<br />
check_command check-host-alive<br />
check_interval 5<br />
retry_interval 1<br />
max_check_attempts 5<br />
check_period 24&#215;7<br />
contact_groups admins<br />
process_perf_data 0<br />
retain_nonstatus_information 0<br />
notification_interval 30<br />
notification_period 24&#215;7<br />
notification_options d,u,r<br />
parents 192.168.0.1<br />
}</em></p>
<p><em># Definizioni host 62.149.140.117<br />
define host{<br />
host_name 62.149.140.117<br />
alias 62.149.140.117<br />
address 62.149.140.117<br />
check_command check-host-alive<br />
check_interval 5<br />
retry_interval 1<br />
max_check_attempts 5<br />
check_period 24&#215;7<br />
contact_groups admins<br />
process_perf_data 0<br />
retain_nonstatus_information 0<br />
notification_interval 30<br />
notification_period 24&#215;7<br />
notification_options d,u,r<br />
}</em></p>
<p><em>## &#8212;&#8212;- ESTRATTO DAL FILE SERVICE.CFG<br />
# Create a service for monitoring CPU load 192.168.0.101 &#8212; occorre aver installato sull&#8217;host NSClient++<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.101<br />
service_description CPU Load<br />
check_command check_nt!CPULOAD!-l 5,80,90<br />
}</em></p>
<p><em># Create a service for monitoring 192.168.0.101 &#8212; occorre aver installato sull&#8217;host NSClient++<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.101<br />
service_description Memory Usage<br />
check_command check_nt!MEMUSE!-w 80 -c 90<br />
}</em></p>
<p><em># Create a service for monitoring C:\ disk usage 192.168.0.101 &#8212; occorre aver installato sull&#8217;host NSClient++<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.101<br />
service_description C:\ Drive Space<br />
check_command check_nt!USEDDISKSPACE!-l c -w 75 -c 95<br />
}</em></p>
<p><em># Create a service for monitoring the service 192.168.0.101 &#8212; occorre aver installato sull&#8217;host NSClient++<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.101<br />
service_description NOME_SERVIZIO<br />
check_command check_nt!SERVICESTATE!-d SHOWALL -l NOME_SERVIZIO<br />
}</em></p>
<p><em>#Create a service server 192.168.0.103<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.103<br />
service_description PING<br />
check_command check-host-alive<br />
}</em></p>
<p><em>#Create a service server 192.168.0.103<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.103<br />
service_description TCP port 8080<br />
check_command check_tcp!8080<br />
}</em></p>
<p><em>#Create a service switch Cisco &#8211; 192.168.0.110<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.110<br />
service_description CPU Utilizzata<br />
check_command check_snmp!-C public -o 1.3.6.1.4.1.9.2.1.56.0 -l Status -w 80 -c 95<br />
}</em></p>
<p><em>#Create a service switch Cisco &#8211; 192.168.0.110<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.110<br />
service_description RAM libera<br />
check_command check_snmp!-C public -o 1.3.6.1.4.1.9.9.48.1.1.1.6.1<br />
}</em></p>
<p><em>#Create a service switch Cisco &#8211; 192.168.0.110<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.110<br />
service_description RAM utilizzata<br />
check_command check_snmp!-C public -o 1.3.6.1.4.1.9.9.48.1.1.1.5.1<br />
}</em></p>
<p><em>#Create a service switch Cisco &#8211; 192.168.0.110<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.110<br />
service_description UpTime<br />
check_command check_snmp!-C public -o sysUpTime.0<br />
}</em></p>
<p><em>#Create a service check </em><a href="http://www.smemorando.com"><em>www.smemorando.com</em></a><br />
<em>define service{<br />
use generic-service<br />
host_name 62.149.140.117<br />
service_description PING<br />
check_command check-host-alive<br />
}</em></p>
<p><em>#Create a service check certificato </em><a href="../"><em>www.smemorando.com</em></a><br />
<em>define service{<br />
use generic-service<br />
host_name 62.149.140.117<br />
service_description Stato Certificato<br />
check_command check_http_cert<br />
}</em></p>
<p><em>#Create a service check </em><a href="http://www.smemorando.com"><em>www.smemorando.com</em></a><br />
<em>define service{<br />
use generic-service<br />
host_name 62.149.140.117<br />
service_description HTTP </em><a href="http://www.smemorando.com"><em>www.smemorando.com</em></a><br />
<em>check_command check_http_smemorando<br />
}</em></p>
<p><em># Create a service for monitoring via SNMP service 192.168.0.102 &#8212; occorre sia attivo l&#8217;snmp sull&#8217;host<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.102<br />
service_description Temperature<br />
check_command check_snmp!-l Temperature -o .1.3.6.1.4.1.3076.2.1.2.22.1.29.0,.1.3.6.1.4.1.3076.2.1.2.22.1.33.0 -w 37,:40 -c :40,:45<br />
}</em></p>
<p><em># Create a service for monitoring via SNMP service 192.168.0.102 &#8212; occorre sia attivo l&#8217;snmp sull&#8217;host<br />
define service{<br />
use generic-service<br />
host_name 192.168.0.102<br />
service_description Active VPN Sessions<br />
check_command check_snmp!-l ActiveSessions -o 1.3.6.1.4.1.3076.2.1.2.17.1.7.0,1.3.6.1.4.1.3076.2.1.2.17.1.9.0 -w :70,:8 -c :75,:10<br />
}</em></p>
<p>è possibile utilizzare snmpwalk per visualizzare gli OID di un host, la sintassi è questa [<strong>snmpwalk –c public –v 1</strong> hostIP] per altre informazioni a riguardo guardate il man.</p>
<p><em>## &#8212;&#8211; ESTRATTO DAL FILE CONTACTS.CFG<br />
define contact{<br />
contact_name          nagiosadmin        ; Short name of user<br />
use                              generic-contact        ; Inherit default values from generic-contact template (defined above)<br />
alias                           Nagios Admin        ; Full name of user<br />
email                         info@tuodominio.ext    ; &lt;&lt;***** CHANGE THIS TO YOUR EMAIL ADDRESS ******<br />
}</em></p>
<p><em>define contact{<br />
contact_name         helpdesk             ; Short name of user<br />
use                             generic-contact         ; Inherit default values from generic-contact template (defined above)<br />
alias                          Help Desk          ; Full name of user<br />
email                         helpdesk</em><em>@tuodominio.ext</em><em> ; &lt;&lt;***** CHANGE THIS TO YOUR EMAIL ADDRESS ******<br />
}</em></p>
<p><em>define contact{<br />
contact_name          oem             ; Short name of user<br />
use                             generic-contact         ; Inherit default values from generic-contact template (defined above)<br />
alias                          Oem          ; Full name of user<br />
email                         oem</em><em>@tuodominio.ext</em><em> ; &lt;&lt;***** CHANGE THIS TO YOUR EMAIL ADDRESS ******<br />
}</em></p>
<p><em>## &#8212;&#8211; ESTRATTO DAL FILE CONTACT-GROUP.CFG<br />
define contactgroup{<br />
contactgroup_name    admins<br />
alias                              Administrators<br />
members                       nagiosadmin,oem<br />
}</em></p>
<p><em>define contactgroup{<br />
contactgroup_name       operatore<br />
alias                                  Operatore<br />
members                            helpdesk<br />
}</em></p>
<p><em>## &#8212;&#8211; ESTRATTO DAL FILE HOSTS-EXTINFO.CFG &#8212; PERSONALIZZAZIONE ICONE STATUS MAP<br />
define hostextinfo{<br />
host_name               NAGIOS<br />
icon_image_alt          Nagios<br />
icon_image              nagios.png<br />
statusmap_image         nagios.gd2<br />
}</em></p>
<p><em>define hostextinfo{<br />
host_name               192.168.0.102<br />
icon_image_alt          VPN Concentrator<br />
icon_image              cisco3.png<br />
statusmap_image         cisco3.gd2<br />
}</em></p>
<p><em>define hostextinfo{<br />
host_name               192.168.0.101,192.168.0.103<br />
icon_image_alt          Server<br />
icon_image              server2.png<br />
statusmap_image         server2.gd2<br />
}</em></p>
<p><em>define hostextinfo{<br />
host_name               192.168.0.110<br />
icon_image_alt          Switch<br />
icon_image              switch.png<br />
statusmap_image         switch.gd2<br />
}</em></p>
<p><em>define hostextinfo{<br />
host_name               62.149.140.117<br />
icon_image_alt          Web Server Smemorando.com<br />
icon_image              www_server.png<br />
statusmap_image         www_server.gd2<br />
}</em></p>
<p><em>## &#8212;&#8211; ESTRATTO DAL FILE TIMEPERIODS.CFG<br />
define timeperiod{<br />
timeperiod_name 24&#215;7<br />
alias           24 Hours A Day, 7 Days A Week<br />
sunday          00:00-24:00<br />
monday          00:00-24:00<br />
tuesday         00:00-24:00<br />
wednesday       00:00-24:00<br />
thursday        00:00-24:00<br />
friday          00:00-24:00<br />
saturday        00:00-24:00<br />
}</em></p>
<p><em># &#8216;workhours&#8217; timeperiod definition<br />
define timeperiod{<br />
timeperiod_name    workhours<br />
alias        Normal Work Hours<br />
monday        09:00-17:00<br />
tuesday        09:00-17:00<br />
wednesday    09:00-17:00<br />
thursday    09:00-17:00<br />
friday        09:00-17:00<br />
}</em></p>
<p><em># &#8216;none&#8217; timeperiod definition<br />
define timeperiod{<br />
timeperiod_name    none<br />
alias        No Time Is A Good Time<br />
}</em></p>
<p><em>## &#8212;&#8211; ESTRATTO DAL FILE COMMANDS.CFG<br />
# Check verifica stato certificato ssl www.smemorando.com<br />
define command{<br />
command_name    check_http_cert<br />
command_line    $USER1$/check_http -H smemorando.com -S -C 30<br />
}</em></p>
<p>tra qualche giorno la terza parte.</p>
]]></content:encoded>
			<wfw:commentRss>http://www.smemorando.com/2009/08/11/principali-file-di-configurazione-in-nagios/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Installare Nagios e plugins</title>
		<link>http://www.smemorando.com/2009/08/08/installare-e-configurare-nagios-nagios-plugins/</link>
		<comments>http://www.smemorando.com/2009/08/08/installare-e-configurare-nagios-nagios-plugins/#comments</comments>
		<pubDate>Sat, 08 Aug 2009 18:06:28 +0000</pubDate>
		<dc:creator>Cristian</dc:creator>
				<category><![CDATA[Nagios]]></category>
		<category><![CDATA[htpasswd]]></category>
		<category><![CDATA[Nagios monitoraggio]]></category>

		<guid isPermaLink="false">http://www.smemorando.com/?p=23</guid>
		<description><![CDATA[Per iniziare installo questi pacchetti: sudo apt-get install apache2 sudo apt-get install build-essential sudo apt-get install libgd2-xpm-dev qui creo l&#8217;utente nagios e gli imposto la password nagios: sudo -s /usr/sbin/useradd -m nagios passwd nagios imposto il gruppo di appartenenza e la shell: /usr/sbin/groupadd nagios /usr/sbin/usermod -G nagios nagios /usr/sbin/groupadd nagcmd /usr/sbin/usermod -G nagcmd nagios /usr/sbin/usermod [...]]]></description>
			<content:encoded><![CDATA[<p>Per iniziare installo questi pacchetti:<br />
<span style="font-weight: bold;">sudo apt-get install apache2 </span><br />
<span style="font-weight: bold;">sudo apt-get install build-essential </span><br />
<span style="font-weight: bold;">sudo apt-get install libgd2-xpm-dev </span></p>
<p>qui creo l&#8217;utente nagios e gli imposto la password nagios:<br />
<span style="font-weight: bold;">sudo -s </span><br />
<span style="font-weight: bold;">/usr/sbin/useradd -m nagios </span><br />
<span style="font-weight: bold;">passwd nagios </span></p>
<p>imposto il gruppo di appartenenza e la shell:<br />
<span style="font-weight: bold;">/usr/sbin/groupadd nagios </span><br />
<span style="font-weight: bold;">/usr/sbin/usermod -G nagios nagios </span><br />
<span style="font-weight: bold;">/usr/sbin/groupadd nagcmd<br />
/usr/sbin/usermod -G nagcmd nagios </span><br />
<span style="font-weight: bold;">/usr/sbin/usermod -G nagcmd www-data </span></p>
<p>scarico i sorgenti:<br />
<span style="font-weight: bold;">wget <a href="http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.2.0.tar.gz" onclick="pageTracker._trackPageview('/outgoing/prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.2.0.tar.gz?referer=');">http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.2.0.tar.gz</a></span></p>
<p><span style="font-weight: bold;">wget <a href="http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.13.tar.gz" onclick="pageTracker._trackPageview('/outgoing/prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.13.tar.gz?referer=');">http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.13.tar.gz</a></span></p>
<p>scompatto e configuro il primo:<br />
<span style="font-weight: bold;">tar xzf nagios-3.2.0.tar.gz </span><br />
<span style="font-weight: bold;">cd nagios-3.2.0 </span><br />
<span style="font-weight: bold;">./configure &#8211;with-command-group=nagcmd<br />
make all<br />
make install </span></p>
<p>configuro i permessi:<br />
<span style="font-weight: bold;">make install-init </span><br />
<span style="font-weight: bold;">make install-config </span><br />
<span style="font-weight: bold;">make install-commandmode </span></p>
<p>e configuro l&#8217;interfaccia web:<br />
<span style="font-weight: bold;">make install-webconf </span></p>
<p>per funzionare ha bisogno di un utente amministratore:<br />
<span style="font-weight: bold;">htpasswd -c /usr/local/nagios/etc/</span><span style="font-weight: bold;">htpasswd.users nagiosadmin </span></p>
<p>ora faccio ricaricare la configurazione ad Apache:<br />
<span style="font-weight: bold;">/etc/init.d/apache2 reload </span></p>
<p>installo openssl e altri pacchetti utili che mi servirà anche per utilizzare il plug-in check_http per verificare i certificati ssl:<br />
<span style="font-weight: bold;">apt-get install openssl dnsutils fping</span></p>
<p>non resta che installare i plugin, quindi mi porto nella directory dove sono stati salvati e li scompatto e configuro:<br />
t<span style="font-weight: bold;">ar xzf nagios-plugins-1.4.13.tar.gz </span><br />
<span style="font-weight: bold;">cd nagios-plugins-1.4.13 </span><br />
<span style="font-weight: bold;">./configure &#8211;with-nagios-user=nagios &#8211;with-nagios-group=nagios &#8211;with-openssl=/usr/bin/openssl </span></p>
<p>e non:<br />
<span style="font-weight: bold;">./configure &#8211;with-nagios-user=nagios &#8211;with-nagios-group=nagios</span></p>
<p>poi lancio:<br />
<span style="font-weight: bold;">make </span><br />
<span style="font-weight: bold;">make install</span></p>
<p><span style="font-style: italic;">ora inizio con la configurazione.</span></p>
<p>per prima cosa edito il file bashrc e aggiungo un paio di alias per semplificarmi la vita:<br />
<span style="font-weight: bold;">vim /root/.bashrc</span></p>
<p>ed aggiungo subito dopo questa riga:<br />
# some more ls aliases</p>
<p>questi alias:<br />
<span style="font-weight: bold;">alias nagios_rs=&#8217;/etc/init.d/nagios restart&#8217;</span><br />
<span style="font-weight: bold;">alias nagios_st=&#8217;/etc/init.d/nagios start&#8217;</span><br />
<span style="font-weight: bold;">alias nagios_check=&#8217;/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg&#8217;</span></p>
<p>poi facciamo si che nagios si avvii in automatico al boot:<br />
<span style="font-weight: bold;">ln -s /etc/init.d/nagios /etc/rcS.d/S99nagios</span></p>
<p>controllo che non ci siano errori:<br />
<span style="font-weight: bold;">nagios_check </span></p>
<p><a href="http://www.blog75.eu/uploaded_images/nagios_check-710875.png" target="_blank" onclick="pageTracker._trackPageview('/outgoing/www.blog75.eu/uploaded_images/nagios_check-710875.png?referer=');"><img style="display: block; margin: 0px auto 10px; width: 320px; cursor: pointer; height: 246px; text-align: center;" src="http://www.blog75.eu/uploaded_images/nagios_check-710873.png" border="0" alt="Nagios check" /></a><br />
e lo avviamo:<br />
<span style="font-weight: bold;">nagios_st </span></p>
<p>per accedere all&#8217;interfaccia web basta aprire il browser e digitare http://localhost/nagios/</p>
<p><a href="http://www.blog75.eu/uploaded_images/nagios-interface-1-780355.png" target="_blank" onclick="pageTracker._trackPageview('/outgoing/www.blog75.eu/uploaded_images/nagios-interface-1-780355.png?referer=');"><img style="display: block; margin: 0px auto 10px; width: 320px; cursor: pointer; height: 313px; text-align: center;" src="http://www.blog75.eu/uploaded_images/nagios-interface-1-780351.png" border="0" alt="Nagios Web Interface" /></a><br />
tra qualche giorno la seconda parte</p>
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