Hello, On Fri, Feb 13, 2009 at 2:31 PM, John Doe <jdmls at yahoo.com> wrote: > Still using 2.x here but, isn't there a commands.cfg file with some check_http definition? > In doubt, take a working check_xyz and grep it in all the conf files and see if you missed any... thanks - yes, I always "grep -ri" for commands. That is what perplexes me - the file # rpm -qf /etc/nagios/command-plugins.cfg nagios-plugins-1.4.13-1.el5.rf contains both check_http and (few lines below) check_squid: # grep check_http /etc/nagios/command-plugins.cfg command[check_http]=/usr/lib/nagios/plugins/check_http -H $HOSTADDRESS$ -I $HOSTADDRESS$ command[check_http2]=/usr/lib/nagios/plugins/check_http -H $ARG1$ -I $HOSTADDRESS$ -w $ARG2$ -c $ARG3$ command[check_squid]=/usr/lib/nagios/plugins/check_http -H $HOSTADDRESS$ -p $ARG1$ -u $ARG2$ -e 'HTTP/1.0 200 OK' And still I can use check_http, but can't use check_squid: Error: Service check command 'check_squid' specified in service 'Proxy' for host 'ablprx01' not defined anywhere! Regards Alex