Hey guys, I'm trying use check_memcached.pl to monitor a couple of memcached services running on two ports. I have my command definition setup like this: # 'check_memcached' command definition define command { command_name check_memcached command_line $USER1$/check_memcached.pl -H $HOSTADDRESS$ -p $ARG1$ } And I have my service definitions setup like this: # Define a service to check memcached on web1 (just the basics for right now). define service{ use local-service ; Name of service template to use host_name web1 service_description Check Memcached 11211 contact_groups linux-admins check_command check_memcached!web1.example.com !11211 notifications_enabled 1 } # Define a service to check memcached on web1 (just the basics for right now). define service{ use local-service ; Name of service template to use host_name web1 service_description Check Memcached 11212 contact_groups linux-admins check_command check_memcached!web1.example.com !11212 notifications_enabled 1 } And if I run both checks manually they succeed: [root at monitor1:/usr/local/nagios/etc/objects/servers] #../../../libexec/ check_memcached.pl -H web1.example.com -p 11211 MEMCACHE OK: memcached 1.4.22 on web1.example.com:11211, up 22 minutes 52 seconds [root at monitor1:/usr/local/nagios/etc/objects/servers] #../../../libexec/ check_memcached.pl -H web1.example.com -p 11212 MEMCACHE OK: memcached 1.4.22 on web1.example.com:11212, up 12 minutes 2 seconds Yet, in my nagios web interface, I'm getting this error: Check Memcached 11211 <https://nagios.jokefire.com/nagios/cgi-bin/extinfo.cgi?type=2&host=web1&service=Check+Memcached+11211> CRITICAL 05-24-2015 14:28:31 0d 0h 10m 19s 4/4 CRITICAL ERROR - Can not connect to '162.243.60.6' on port 0 Check Memcached 11212 <https://nagios.jokefire.com/nagios/cgi-bin/extinfo.cgi?type=2&host=web1&service=Check+Memcached+11212> CRITICAL 05-24-2015 14:29:12 0d 0h 11m 8s 4/4 CRITICAL ERROR - Can not connect to '162.243.60.6' on port 0 I thought I could specify the command in the service definition like this: check_memcached!web1.example.com!11211 To reproduced the command as it's executed on the command line. How can I specify the port correctly here? Thanks, Tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B