yuris wrote: > Hi all, > > I have this weird trouble with getting nrpe agents work. My nagios > server hosts on Debian box while agents on Debian and Centos (all > installed from official binary packages) and the problem is check_nrpe > always returns this "NRPE: No output returned from plugin" error when I > check NRPE on any Centos host and this is true with all plugins - all of > them does not return anything. I turned on debug at one Centos host but > still it does not show me anything, when I run from nagios host: > > ./check_nrpe -H centos.host.com -c check_load > > I always get "NRPE: Unable to read output" and there is nothing in > syslog at agent's host in spite of debug is on. > > My assumption was that command definitions on Centos host side use path > to plugins that is different from Debian, for example: > > command[check_load]="/usr/lib/nagios/plugins/check_load -w 15,10,5 -c > 30,25,20" [Debian host] > command[check_load]="/usr/lib64/nagios/plugins/check_load -w 15,10,5 -c > 30,25,20" [Centos host] > > but I made symbolic link so that plugins could be called by the same > path - it didn't help. When I run command locally, all works just fine: > > su nrpe -c "/usr/lib/nagios/plugins/check_load -w 15,10,5 -c 30,25,20" > OK - load average: 1.28, 0.97, 0.97|load1=1.280;15.000;30.000;0; > load5=0.970;10.000;25.000;0; load15=0.970;5.000;20.000;0; > > while from nagios server: > > ./check_nrpe -H centos.host.com -c check_load > NRPE: Unable to read output > > The weird part of it is that all plugins work fine on debian hosts. > Nagios uses the same host, service and command definitions for all > monitored hosts (both debian and centos) and I really wonder what's > wrong with centos nrpe agents :/ > > If anyone have any ideas, please try to help. > > P.S. I use Nagios server v.3 (from Debian lenny) and Nrpe agents > versions are the same on Debian and Centos (v.2.12). > > from first look it seems that one of your server has SSL installed on it and the other does not and nagios -by default - assumes ( command definitions) to use nrpe with ssl .
Try to execute the command on the CentOS hosts , but add "-n " after the host IP , and see if that will help . Assaf -- Never,Ever Cut A Deal With a Dragon ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ 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