Hello CentOS users,

I have problems posting the question below to the Nagios mailing list (my subscription is not accepted for some reason). Has anybody of you already had this probably frequent problem with Nagios in CentOS? I can't use check_squid from command-plugins.cfg (s. below)

Thank you for any hints Alex

---------- Forwarded message ---------- To: nagios-users@lists.sourceforge.net

Dear Nagios users,

I'm using:

# cat /etc/*release CentOS release 5.2 (Final) <-- compatible to RHEL 5.2

# rpm -qa|grep nagios nagios-3.0.6-1.el5.rf nagios-plugins-1.4.13-1.el5.rf

and have successfully added monitoring of 20 other Linux-servers by replicating the entries from /etc/nagios/objects/localhost.cfg

But now I'm trying to add 2 more things:

1) monitoring Squid 2) monitoring Apache at ports 8080 and 8090

I have found the following 3 lines:

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'

in the file /etc/nagios/command-plugins.cfg and have added 1 more line:

command[check_http3]=/usr/lib/nagios/plugins/check_http -p $ARG1$ -I $HOSTADDRESS$

(after reading "check_http --help").

In my config files I've added:

define host{ use linux-server host_name ablpdm01 alias ablpdm01 address 10.121.42.100 } define service{ use local-service host_name ablpdm01 service_description HTTP check_command check_http3!8090 notifications_enabled 0 } .......... define host{ use linux-server host_name ablprx01 alias ablprx01 address 10.121.42.32 } define service{ use local-service host_name ablprx01 service_description Proxy check_command check_squid!8080 }

Unfortunately I get errors now:

# nagios -v ../nagios.cfg

Nagios 3.0.6 Copyright (c) 1999-2008 Ethan Galstad (http://www.nagios.org) Last Modified: 12-01-2008 License: GPL

Reading configuration data...

Running pre-flight check on configuration data...

Checking services... Error: Service check command 'check_http3' specified in service 'HTTP' for host 'ablpdm01' not defined anywhere! Error: Service check command 'check_http3' specified in service 'HTTP' for host 'ablpdm02' not defined anywhere! Error: Service check command 'check_http3' specified in service 'HTTP' for host 'ablpdm03' not defined anywhere! Error: Service check command 'check_squid' specified in service 'Proxy' for host 'ablprx01' not defined anywhere! Checked 123 services. Checking hosts... Checked 16 hosts. Checking host groups... Checked 5 host groups. Checking service groups... Checked 0 service groups. Checking contacts... Checked 1 contacts. Checking contact groups... Checked 1 contact groups. Checking service escalations... Checked 0 service escalations. Checking service dependencies... Checked 0 service dependencies. Checking host escalations... Checked 0 host escalations. Checking host dependencies... Checked 0 host dependencies. Checking commands... Checked 24 commands. Checking time periods... Checked 5 time periods. Checking for circular paths between hosts... Checking for circular host and service dependencies... Checking global event handlers... Checking obsessive compulsive processor commands... Checking misc settings...

Total Warnings: 0 Total Errors: 4

***> One or more problems was encountered while running the pre-flight check...

Check your configuration file(s) to ensure that they contain valid directives and data defintions. If you are upgrading from a previous version of Nagios, you should be aware that some variables/definitions may have been removed or modified in this version. Make sure to read the HTML documentation regarding the config files, as well as the 'Whats New' section to find out what has changed.

Does anybody have an idea what's wrong?

Isn't adding command[check_XXX]=YYY to command-plugins.cfg enough?

I'm especially perplexed by check_squid being not found even though it's there from the start

Thank you Alex