Hi Jatin, Don't try to run the sudo command using "root" while its configuration is made for "nagios" :)
Your issue looks like you can run check_mem.pl as root and get a reply locally, but nrpe is owned by user "nagios", and user "nagios" won't run this plugin correctly. To allow the nagios user to run check_mem.pl as root, you have to configure a sudo command. Make sure your check_mem.pl is owned by user "nagios", configure your sudo command via "visudo", and then run this sudo command as the "nagios" user. As root, you could try : su - nagios -c "/usr/bin/sudo /usr/local/nagios/libexec/check_mem.pl -w 10 -c 5" Or just wait to see the result on your nagios server. Cheers, Quentin -----Original Message----- From: Jatin Davey [mailto:jasho...@cisco.com] Sent: 12 March 2010 10:45 To: Marquez, Quentin Cc: Nagios Users List Subject: Re: [Nagios-users] check_mem shows : "NRPE: Unable to read output" Hi Marquez I ran the command in the same as you said and i am getting the following error: [r...@mcs-linux-2 etc]# /usr/bin/sudo /usr/local/nagios/libexec/check_mem.pl -w 10 -c 5 Sorry, user root is not allowed to execute '/usr/local/nagios/libexec/check_mem.pl -w 10 -c 5' as root on mcs-linux-2. Please let me know what to do. Thanks Jatin On 3/12/2010 3:03 PM, Marquez, Quentin wrote: > Jatin, > > Here is how I use it with sudo : > > In my nrpe.cfg : > command[check_mem]=/usr/bin/sudo > /usr/local/nagios-plugins/current/libexec/check_mem.pl -w 10 -c 5 > > visudo : > User_Alias SU_TO_NAGIOS_PLUGINS_USER = nagios > Cmnd_Alias SU_TO_NAGIOS_PLUGINS = > /usr/local/nagios-plugins/current/libexec/check_mem.pl -w 10 -c 5 > SU_TO_NAGIOS_PLUGINS_USER ALL = NOPASSWD: SU_TO_NAGIOS_PLUGINS > > Root permissions will allow nagios to read memory attributes. > > ++ > Quentin > > -----Original Message----- > From: Jatin Davey [mailto:jasho...@cisco.com] > Sent: 12 March 2010 08:08 > To: Nagios Mailinglist > Subject: [Nagios-users] check_mem shows : "NRPE: Unable to read output" > > Hi > > I had downloaded the perl file for check_mem plugin and copied in the > libexec folder of the target machine that needs to be monitored. On the > localhost it returns correct values but when i shoot the command from > the nagios server using NRPE i am getting the following : > > NRPE: Unable to read output > > Is it an issue with NRPE or check_mem plugin. > > The output for check_mem on the localhost is : > > <b>CRITICAL: Memory Usage (W> 5, C> 6): 30%<br>Swap Usage (W> 5, C> 6): > > 1%</b>|MemUsed=30%;5;6 SwapUsed=1%;5;6 > > I have defined the command also in the nrpe.cfg file. All other commands > > work fine except for the check_mem plugin. > > Please let me know what to do next. > > Thanks > Jatin > > ------------------------------------------------------------------------ > ------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. 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See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
