<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="Generator" content="Microsoft Word 14 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="blue" vlink="purple"> <div class="WordSection1"> ok it's really very simple - find the exact command definition string you want to execute in your commands.cfg, and su - nagios (as root) and then interactively (like actually type it right?) the same exact command that the command definition is attempting to execute as the nagios user, and see if it works - Note, this is only to debug, or test your configuration - you do not want to setup your script to su - nagios or anything like that ... sorry if i was not clear on that - what you want to do is "mimic exactly" the command nagios is attempting to execute, that is all, it's just for testing. if you can figure out why that is not working as the nagios user (This is the account the nagios program runs as right?), then that is where your problem is, so i'm sorry - it's not a solution, it's only the best way to find your problem, as that is the apparent issue - as you say - it runs correctly otherwise. <o:p></o:p> <o:p> </o:p> Jamie<o:p></o:p> <o:p> </o:p> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"> From: Parkman, Mikhail [mailto:Mikhail_Parkman@cable.comcast.com] Sent: Friday, March 30, 2012 8:43 PM To: Nagios Users List Subject: Re: [Nagios-users] how to associate /bin/bash with shell script in Nagios<o:p></o:p> </div> </div> <o:p> </o:p> The script represents in Nagios terms external application.<o:p></o:p> It runs on the local (monitoring) box.<o:p></o:p> Script due to its content makes connection to the mbeans on the remote server (target box),<o:p></o:p> receives notifications from mbeans, and then writes to the external fifo file (usr/local/nagios/var/rw/nagios.cmd)<o:p></o:p> <o:p> </o:p> message in the predefined format:<o:p></o:p> <o:p> </o:p> PROCESS_SERVICE_CHECK_RESULT;<host_name>;<service_description>;<return_code>;<plugin_output><o:p></o:p> <o:p> </o:p> One message for one notification.<o:p></o:p> <o:p> </o:p> It looks to me that “remote stuff” is not applicable in that case.<o:p></o:p> <o:p> </o:p> When I run this script manually on the local monitoring host, it runs and writes data to the file.<o:p></o:p> When it is initiated by service defined on the same monitoring host in the .cfg file, nothing happens.<o:p></o:p> <o:p> </o:p> If I want this script to be initiated by “su – nagios”, how exactly I incorporate it within existing command and service definitions on the monitoring host?<o:p></o:p> <o:p> </o:p> Thanks.<o:p></o:p> Mikhail.<o:p></o:p> <o:p> </o:p> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"> From: James Pratt [mailto:jpratt@norwich.edu] Sent: Friday, March 30, 2012 12:19 PM To: Nagios Users List Subject: Re: [Nagios-users] how to associate /bin/bash with shell script in Nagios<o:p></o:p> </div> </div> <o:p> </o:p> Yes I agree with Ed as well on the remote stuff - <o:p></o:p> <o:p> </o:p> And yes, the *nix OS determines what shell/program (eg perl/bash/sh/zsh etc) to execute the script with by the shebang line in the top of the file, and whether or not it's executable.<o:p></o:p> <o:p> </o:p> I would definitely try and execute it as the nagios user - that is all that is left in your case it seems (?)<o:p></o:p> <o:p> </o:p> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"> From: Edwin Zoeller <a href="mailto:[mailto:Edwin.Zoeller@ama-assn.org]">[mailto:Edwin.Zoeller@ama-assn.org]</a> Sent: Friday, March 30, 2012 3:11 PM To: 'nagios-users@lists.sourceforge.net' Subject: Re: [Nagios-users] how to associate /bin/bash with shell script in Nagios<o:p></o:p> </div> </div> <o:p> </o:p> If this is run on a remote host using nrpe this what I would check: - type "which bash" on the remote host and make sure the path matches what's in your script. - verify your nrpe.cfg has an entry in it for your script I.e "check_myscript" - verify on the master that check commands matches the remote entry Ed <o:p></o:p> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"> From: Parkman, Mikhail <a href="mailto:[mailto:Mikhail_Parkman@cable.comcast.com]">[mailto:Mikhail_Parkman@cable.comcast.com]</a> Sent: Friday, March 30, 2012 01:50 PM To: Nagios Users List <<a href="mailto:nagios-users@lists.sourceforge.net">nagios-users@lists.sourceforge.net</a>> Subject: Re: [Nagios-users] how to associate /bin/bash with shell script in Nagios <o:p></o:p> </div> Actually I verified that this script runs fine manually using default (Bourne) shell too.<o:p></o:p> So now I have "#!/bin/sh" in the beginning of my script and it still is not being picked up by service.<o:p></o:p> And I restart Nagios to initiate the service attempt.<o:p></o:p> Do you refer to Bourne shell ("#!/bin/sh" ) in this part of your explanation:<o:p></o:p> <o:p> </o:p> “ (If it's a shell script, nagios will execute it using the proper interpreter, so there is no way to "tell" nagios to use bash if that makes sense)?”<o:p></o:p> <o:p> </o:p> If you do, and since I still can’t initiate the script should I su - nagios user anyway?<o:p></o:p> <o:p> </o:p> And responding to Edwin’s question, it is on local host.<o:p></o:p> <o:p> </o:p> Thanks.<o:p></o:p> Mikhail.<o:p></o:p> <o:p> </o:p> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"> From: James Pratt <a href="mailto:[mailto:jpratt@norwich.edu]">[mailto:jpratt@norwich.edu]</a> Sent: Friday, March 30, 2012 11:33 AM To: Nagios Users List Subject: Re: [Nagios-users] how to associate /bin/bash with shell script in Nagios<o:p></o:p> </div> </div> <o:p> </o:p> Ok, so it's working fine when you run it from the command line, but not for nagios user, correct? (If it's a shell script, nagios will execute it using the proper interpreter, so there is no way to "tell" nagios to use bash if that makes sense)?<o:p></o:p> <o:p> </o:p> I usually su - nagios user, then try and run it from that user account - that's usually where the problem is, it runs fine for root or whoever, but fails for the nagios user for whatever reason...<o:p></o:p> <o:p> </o:p> Cheers,<o:p></o:p> Jamie<o:p></o:p> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"> From: Parkman, Mikhail <a href="mailto:[mailto:Mikhail_Parkman@cable.comcast.com]">[mailto:Mikhail_Parkman@cable.comcast.com]</a> Sent: Friday, March 30, 2012 1:28 PM To: Nagios Users List Subject: Re: [Nagios-users] how to associate /bin/bash with shell script in Nagios<o:p></o:p> </div> </div> <o:p> </o:p> Sorry for confusion - I was just trying different combinations.<o:p></o:p> <o:p> </o:p> But initially my command definition was following:<o:p></o:p> <o:p> </o:p> define command{<o:p></o:p> command_name dlg_notifications<o:p></o:p> command_line /usr/local/nagios/libexec/nagios-msg-broker.sh<o:p></o:p> }<o:p></o:p> <o:p> </o:p> I have "#!/bin/bash" in the top of my shell script, and shell script is set to be executable.<o:p></o:p> <o:p> </o:p> perfserver-10:/usr/local/nagios/libexec$ ls -l nagios-msg-broker.sh<o:p></o:p> -rwxrwxrwx 1 nagios nagcmd 149 Mar 30 10:04 nagios-msg-broker.sh<o:p></o:p> <o:p> </o:p> Thanks.<o:p></o:p> Mikhail.<o:p></o:p> <o:p> </o:p> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"> From: James Pratt <a href="mailto:[mailto:jpratt@norwich.edu]">[mailto:jpratt@norwich.edu]</a> Sent: Friday, March 30, 2012 9:53 AM To: Nagios Users List Subject: Re: [Nagios-users] how to associate /bin/bash with shell script in Nagios<o:p></o:p> </div> </div> <o:p> </o:p> I'm slightly confused - Do you have "#!/bin/bash" in the top of your shell script, and is it set to be executable by (at least) the nagios user? (Not sure why you are calling bash then the script name as an arg, that is odd to me, but maybe I'm missing something)?<o:p></o:p> <o:p> </o:p> Cheers,<o:p></o:p> Jamie<o:p></o:p> <o:p> </o:p> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"> From: Parkman, Mikhail <a href="mailto:[mailto:Mikhail_Parkman@cable.comcast.com]">[mailto:Mikhail_Parkman@cable.comcast.com]</a> Sent: Friday, March 30, 2012 12:43 PM To: <a href="mailto:nagios-users@lists.sourceforge.net">nagios-users@lists.sourceforge.net</a> Subject: [Nagios-users] how to associate /bin/bash with shell script in Nagios<o:p></o:p> </div> </div> <o:p> </o:p> Hello,<o:p></o:p> <o:p> </o:p> I have the following command:<o:p></o:p> <o:p> </o:p> define command{<o:p></o:p> command_name dlg_notifications<o:p></o:p> command_line /bin/bash /usr/local/nagios/libexec/nagios-msg-broker.sh<o:p></o:p> }<o:p></o:p> <o:p> </o:p> And the following service<o:p></o:p> <o:p> </o:p> define service{<o:p></o:p> use mypc<o:p></o:p> service_description dlg_Alerts_notifications<o:p></o:p> check_command dlg_notifications<o:p></o:p> max_check_attempts 1<o:p></o:p> retain_status_information 0<o:p></o:p> retain_nonstatus_information 0<o:p></o:p> }<o:p></o:p> <o:p> </o:p> /bin/bash /usr/local/nagios/libexec/nagios-msg-broker.sh<o:p></o:p> runs fine manually.<o:p></o:p> <o:p> </o:p> Service defined above can’t run it though.<o:p></o:p> While googling around, I found out that apparently Nagios does not know that script should be executed by /bin/bash<o:p></o:p> <o:p> </o:p> How would I let Nagios know about /bin/bash<o:p></o:p> <o:p> </o:p> Thanks.<o:p></o:p> Mikhail.<o:p></o:p> </div> </body> </html>