Help - I am unable to get the NSClient++ to restart services

Paulo Ribas paulo.ribas at opservices.com.br
Wed Jul 16 19:35:14 CEST 2008


Try the following url http://nagios.sourceforge.net/docs/3_0/eventhandlers.html 


[]'s 
-- 



----- "Jonathan Williams" wrote: 
> 


OK.. I am getting somewhere now. I manually ran this command from the Nagios server terminal: 



/usr/local/nagios/libexec/check_nrpe -H 10.10.113.51 -p 5666 -n -c service_control -a "spooler" start 



And it worked!! Meaning the OpMonagent works! Now I jst need to find out why it will not work as an event_handler like so: 



Define service{ 

Use generic service 

Host_name jwilliamspc 

Service_description PrintSpooler 

Check_command check_nt!SERVICESTATE!-d SHOWALL –l Spooler 

Event_handler restart_Spooler 

} 



define command{ 

command_name restart-Spooler 

command_line PATH/ check_nrpe -H $HOSTADDRESS$ -p 5666 -n -c service_control -a "Spooler" start 














From: Jonathan Williams 
> Sent: Wednesday, July 16, 2008 10:07 AM 
> To: Fernando Rocha 
> Cc: Nagios Users Mailinglist 
> Subject: RE: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 



OK. OpMon is running on the test server and my define_command for spooler restart reads exactly as you posted, still no service restart. I am still missing something. I am not sure if I need to edit anything in the OpMonagent.ini or service_control.cmd. 






From: Fernando Rocha [mailto:fernando.rocha at opservices.com.br] 
> Sent: Tuesday, July 15, 2008 2:11 PM 
> To: Jonathan Williams 
> Cc: Nagios Users Mailinglist 
> Subject: Re: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 




Jonathan, 
> 
> The client installed on the host doesn't matter if both of them have support to nrpe. They will have a configuration file where you'll define the commands to run over check_nrpe. 
> 
> NSClient++ uses NSC.ini 
> OpMonAgent uses opmonagent.ini 
> 
> But to make it easy, the OpMonAgent has a command to restart services built-in his configuration file. 
> 
> So, if you have the OpMonAgent running on host, you just need run the following command from your nagios server: 
> 
> /usr/local/nagios/libexec/check_nrpe -H $HOSTADDRESS$ -p 5666 -n -c service_control -a "spooler" start 
> 
> But, if you are using NSClient++ you need define a command into the configuration file first, then you'll use this command in the check_nrpe. 
> 
> Fernando Rocha 
> OpServices Tecnologia da Informação 
> 
> ----- Original Message ----- 
> From: "Jonathan Williams" <jonathan.williams at us.g4s.com> 
> To: "Fernando Rocha" <fernando.rocha at opservices.com.br> 
> Cc: "Nagios Users Mailinglist" <nagios-users at lists.sourceforge.net> 
> Sent: Tuesday, July 15, 2008 4:57:07 PM (GMT-0300) Auto-Detected 
> Subject: RE: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 


I feel like I am back at square one. It seems like a simple task to get Nagios to restart a service. I have NRPE now running on the server under xinedt, and switched the client back to NSClient++ from OpMon Agent. Both support NRPE. I am not sure if I am supposed to get a service restarted with a NRPE_Check command like: 



/usr/local/nagios/libexec/check_nrpe -H $HOSTADDRESS$ -p 5666 -n -c service_control -a "spooler" start 



Or am is supposed to create scripts on the host that will restart a service like a .bat file with a “net start spooler” command and than get an event_handler set up to call that script. It seems there are different ways to do it and I am being pulled both directions. I am new to Nagios as well as Linux and have been able to scrap my way thus far while learning a lot about both, but am about ready to call it quits. I was pointed to the NakedNuns website to the section on CheckExternalScripts, but honestly could not make much sense of it. 






From: Fernando Rocha [mailto:fernando.rocha at opservices.com.br] 
> Sent: Tuesday, July 15, 2008 4:38 AM 
> To: Jonathan Williams 
> Cc: Nagios Users Mailinglist 
> Subject: Re: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 





Jonathan, 
> 
> make sure that you have the xinetd installed and check if there is the following directory: 
> 
> [root at fernando ~]# ls /etc/xinetd.d/ 
> chargen-dgram daytime-dgram discard-dgram echo-dgram eklogin gssftp krb5-telnet ktalk rsync time-dgram 
> chargen-stream daytime-stream discard-stream echo-stream ekrb5-telnet klogin kshell nrpe tcpmux-server time-stream 
> 
> if you don't have that, try to install by apt-get! 
> 
> and then, run the command again 
> 
> Make install-xinetd 
> 
> or you can install just writing a file like this: 
> [root at fernando ~]# cat /etc/xinetd.d/nrpe 
> service nrpe 
> { 
> flags = REUSE 
> socket_type = stream 
> wait = no 
> only_from = 127.0.0.1 (PUT YOURS NARIOS SERVER'S IPS HERE) 
> user = nagios (PUT THE NAGIOS USER HERE) 
> server = /usr/local/nagios/libexec/nrpe (THE NRPE SERVER) 
> server_args = -c /usr/local/nagios/libexec/nrpe.cfg --inetd (THE NRPE CONFIG FILE) 
> log_on_failure += USERID 
> disable = no 
> } 
> 
> and then restart xinetd! 


Fernando Rocha 
> OpServices Tecnologia da Informação 


> ----- Original Message ----- 
> From: "Jonathan Williams" <jonathan.williams at us.g4s.com> 
> To: "Fernando Rocha" <fernando.rocha at opservices.com.br> 
> Sent: Monday, July 14, 2008 7:07:57 PM (GMT-0300) Auto-Detected 
> Subject: RE: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 


I was able to compile that without ssl and was able to install the pugin’s using the following 



Make install-plugin 

Make install-daemon 

Make install-daemon-config 



Those worked finer however the next step says: 



Install the NRPE daemon as a service under xinetd 

Make install-xinetd 



I run that command and get: 

root at nagiosserver:- /downloads/nrpe-2.8# cannot create regular file ‘/ect/xinetd.d/nrpe’ No such file or directory 

make: *** [install-xinetd] Error 1 



Any thoughts?? 



Thanks, 



Jon 






From: Fernando Rocha [mailto:fernando.rocha at opservices.com.br] 
> Sent: Monday, July 14, 2008 11:49 AM 
> To: Jonathan Williams 
> Subject: Re: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 




Hi Jonathan! 
> 
> try to use the option --disable-ssl when you run ./configure 


Fernando Rocha 
> OpServices Tecnologia da Informação 


> 
> ----- Original Message ----- 
> From: "Jonathan Williams" <jonathan.williams at us.g4s.com> 
> To: "Paulo Ribas" <paulo.ribas at opservices.com.br> 
> Cc: nagios-users at lists.sourceforge.net 
> Sent: Monday, July 14, 2008 11:52:48 AM (GMT-0300) Auto-Detected 
> Subject: Re: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 

I am having a little trouble installing the NRPE 2.8 plug in Ubuntu. I am able to extract the source code tarball and than I am having issues after that. Per the instructions I am trying to compile the NRPE add-on by running 



./configure 

make all 



After I type ./configure I get a message at the end of the compile job saying “configuration error: Cannot find ssl libraries. Than if I try to go further by installing the plugins by typing make all or the individual make install-pluggin I get an error saying ** No rule to make target ‘all’. Stop. 






From: Paulo Ribas [mailto:paulo.ribas at opservices.com.br] 
> Sent: Friday, July 11, 2008 2:04 PM 
> To: Jonathan Williams 
> Subject: Re: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 




Ok, If you need, contact me. 


[]'s 
> -- 


> 
> ----- "Jonathan Williams" wrote: 
> > 


I found the NRPE add-on (not plug-in) so I will download and install that. I’ll let you know if I run into anything. You have been more than helpful. 



Thanks, 



Jon 






From: Paulo Ribas [mailto:paulo.ribas at opservices.com.br] 
> > Sent: Friday, July 11, 2008 1:49 PM 
> > To: Jonathan Williams 
> > Subject: Re: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 




check_nrpe is part of the package nrpe, if you use ubuntu, I believe that only an "apt-get install nrpe" solve your problem. 


[]'s 
> > -- 
> > 


> > 
> > ----- "Jonathan Williams" wrote: 
> > > 


OK.. I do not have check_nrpe so apparently I need to download that plug-in on by Ubuntu box. 






From: Paulo Ribas [mailto:paulo.ribas at opservices.com.br] 
> > > Sent: Friday, July 11, 2008 1:42 PM 
> > > To: Jonathan Williams 
> > > Subject: Re: [Nagios-users] Help - I am unable to get the NSClient++ to restart services 




The commando must be: 
> > > 
> > > 

define command{ 

command_name restart-Spooler 

command_line PATH/ check_nrpe -H $HOSTADDRESS$ -p 5666 -n -c service_control -a "Spooler" start 

} 


> > > 
> > > ex: 

define command{ 

command_name restart-Spooler 

command_line /usr/local/nagios/libexec/ check_nrpe -H $HOSTADDRESS$ -p 5666 -n -c service_control -a "Spooler" start 

} 




risk being sent to /dev/null 


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