Issues with check_by_ssh

[James Osbourn]

I see that you are talking to a XenServer host.  I am performing something similar.  What I have had to do to achieve results is to create a local Nagios user on the XenServer host which has SSH keys to allow the server Nagios user to connect and avoid using any root SSH keys which the Nagios user is unlikely to be able to read.

Once you have connected to the XenServer host check that the Nagios user can execute the commands you are running.  If you are simply looking at the dom0 as if it was a host and checking items such as cpu, memory or disk usage then you should not have a problem.  If you are executing XenServer xe commands then you will need to pass a username and password that has access to the XenServer to run these commands.  This will be root or another account that has been granted access.  You can store these values in the resources.cfg file and pass them in your command definition.

I have also noticed that your service definition is passing 4 arguments, where your command definition is only using 3 arguments and the hostaddress.  It would be worth checking to make sure that you are passing the correct arguments from your service and command definitions to your remote host.

James

From: Eduardo Montes de Oca S. [mailto:edrendar at gmail.com]
Sent: 15 August 2012 18:52
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] Issues with check_by_ssh

Hi list,

I have some issues with the plugin "check_by_ssh". In particular, there is one error:

When I run a shell script located in another server, from the Nagios server using the check_by_ssh plugin, I don't have any errors and I can see the result of the script, like this:

root at nagioserver#<mailto:root at TSM-SRV-V-114> /usr/lib/nagios/plugins/check_by_ssh -l root -H "ipxenserver" -C /usr/lib/nagios/plugins/check_Xencpu
"OK:CPU%= 3"

But, by any strange reason, when I configure the check for Nagios presents the results in its interface, I have the error:
[cid:image001.png at 01CD7B8F.4994F110]

I have made the ssh authorization keys in both servers (Nagios and Xen), I configured the users, permissions,etc. And I can't to do this work it.

Could someone help me solve this problem????


This is a part of my definition files:
#XENServer
define command {
               command_name check_by_ssh_xentop
               command_line /usr/lib/nagios/plugins/check_by_ssh -l '$ARG1$' -H '$HOSTADDRESS$' -C '$ARG2$' -i '$ARG3$'
               }
#Hypervisor check
        define service{
                use                              generic-service
                host_name                  ORLANDO
                service_description     Hypervisor CPU
                check_command         check_by_ssh_xentop!root!ipxenserver!/usr/lib/nagios/plugins/check_Xencpu.sh!/root/.ssh/id_rsa!
                }




Regards!


--
IC. Eduardo Montes de Oca Sánchez
Skype: edrendar
Gmail: edrendar at gmail.com<mailto:edrendar at gmail.com>
MSN: ed_montesdeoca at hotmail.com<mailto:ed_montesdeoca at hotmail.com>
Movil: 5523419886
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