> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:nagios-users- > [EMAIL PROTECTED] On Behalf Of Heiko Jaberg > Sent: Thursday, March 16, 2006 8:54 AM > To: nagios-users@lists.sourceforge.net > Subject: [Nagios-users] Problems with check_by_ssh > > Hi, > > I encounter some problems using check_by_ssh. > Im trying to grep some version information from a header file on a > remote host. > > Both of the following command lines generate the desired information > when called > directly from the shell. But only the second line works when scheduled > by Nagios. > The second one produces the error "No output". > > Whats wrong here ? > > > 1.) > command_line $USER1$/check_by_ssh -i /export/home/nagios/.ssh/id_rsa > -l user -H $HOSTADDRESS$ -C 'if [ -e /usr/local/ACE/VERSION ]; then > echo `head -1 /usr/local/ACE/VERSION`; else echo No ACE found; fi' > > 2.) > command_line $USER1$/check_by_ssh -i > /export/home/nagios/.ssh/id_rsa -l user -H $HOSTADDRESS$ -C 'head -1 > /usr/local/ACE/VERSION'
While not specifically addressing your question, you're using the check_by_ssh plugin in an unintended manner. It's designed to execute Nagios plugins on remote hosts and simply acts as a proxy for the plugin return code and output. As such, the command you are running must comply with the plugin output standards in order to work correctly with check_by_ssh and Nagios -- http://nagiosplug.sourceforge.net/developer-guidelines.html#PLUGOUTPUT You'll need to pay special attention to exiting with the correct exit code and only 1 line of output (you've got the latter covered). That might change your approach some and negate the need to troubleshoot further. I suspect that you might be encountering a permissions problem related to /usr/local/ACE/VERSION or an environment issue where 'head' isn't in the default path. Try specifying the full path to head. -- Marc ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid0944&bid$1720&dat1642 _______________________________________________ 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
