I now want to add some remote checks, and it looks like a simple path issue, yet I can't seem to verify. The groundwork server, and all webservers are running Ubuntu-Server 8.10. SSH key's are setup with the user nagios, and I can remotely ssh in to the 1st webserver no problem. I am / was getting the following error; "Remote command execution failed: sh: libexec/check_load: not found " and sure enough nothing was on that remote webserver. So I installed both the aptitude packages; nagios-nrpe-plugin - Nagios Remote Plugin Executor Plugin nagios-nrpe-server - Nagios Remote Plugin Executor Server Not sure if I need the server or not, but it's installed and the check_load and others are put in the default; /usr/lib/nagios/plugins/ Looking at the error, I simply made a symlink under /home/nagios/libexec but still getting the same error. Below is just a copy/paste of the ssh in and test. nagios@groundwork:/usr/local/groundwork/nagios/etc$ ssh 192.168.50.101 ssh: /usr/local/groundwork/common/lib/libcrypto.so.0.9.8: no version information available (required by ssh) Linux ws1 2.6.27-7-server #1 SMP Tue Nov 4 20:16:57 UTC 2008 x86_64 Last login: Tue Oct 27 10:57:55 2009 from 192.168.50.6 $ libexec/check_load -w 5,4,3 -c 10,8,6 OK - load average: 0.74, 1.43, 1.66|load1=0.740;5.000;10.000;0; load5=1.430;4.000;8.000;0; load15=1.660;3.000;6.000;0; So things do seem to work, just not sure. The checkcommand shows variable USER22, I could probably hardcode the full path, but not sure if that's the right thing to do. Thanks as always.