Hi Marc, The command /bin/ping -n -U -w 10 -c 1 <a href="http://192.168.0.1">192.168.0.1</a> is executable for user nagios. I logged as nagios user and exec the command above and everythings is OK. The nagios machine is running CentOS 4.0. I installed nagios via yum. Thanks Daniel <div>On 3/2/06, Marc Powell <<a href="mailto:marc@ena.com"> marc@ena.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> > -----Original Message----- > From: <a href="mailto:nagios-users-admin@lists.sourceforge.net"> nagios-users-admin@lists.sourceforge.net</a> [mailto:<a href="mailto:nagios-users-">nagios-users-</a> > <a href="mailto:admin@lists.sourceforge.net">admin@lists.sourceforge.net</a>] On Behalf Of Daniel Carvalho > Sent: Thursday, March 02, 2006 6:11 AM > To: <a href="mailto:nagios-users@lists.sourceforge.net">nagios-users@lists.sourceforge.net</a> > Subject: Re: [Nagios-users] nagios check-host-alive always down {Disarmed} > {Fraud?} > > Hello Marc, thanks for your answer. > > I'm sorry to reply to you too late. Here in my country we were on holiday. > > The notification information is sent to an e-mail address that I > especified on contacts.cfg. The web interface is not installed yet. > > Find attached some cfg files and the notification alert. > > Thanks and best regards > > ***** Nagios ***** > > Notification Type: PROBLEM > Host: bud01 > State: DOWN > Address: <a href="http://192.168.0.1">192.168.0.1</a> > Info: /bin/ping -n -U -w 10 -c 1 <a href="http://192.168.0.1">192.168.0.1</a> It would appear that /bin/ping is not executable by the nagios user. Try running the command in the Info as the nagios user. In some distributions, ping is only executable by root. You can modify that by giving /bin/ping suid permissions if it doesn't have them already -- # ls -al /bin/ping -rwxr-xr-x 1 root root 27860 Sep 29 13:28 /bin/ping # chmod u+s /bin/ping # ls -al /bin/ping -rwsr-xr-x 1 root root 27860 Sep 29 13:28 /bin/ping -- 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! <a href="http://sel.as-us.falkag.net/sel?cmdlnk&kid0944&bid$1720&dat1642">http://sel.as-us.falkag.net/sel?cmdlnk&kid0944&bid$1720&dat1642</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users">https://lists.sourceforge.net/lists/listinfo/nagios-users </a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div>