Fwd: Multiple host in hosts.cfg

[Thomas Slutyer]

On 21 Nov, 2006, at 16:58, spdesai at gnvfc.net wrote:

> Sorry for wrongly posting youe message to IAN.

No problem. I saw your e-mail the first time, since you CCed it to the 
ML.

> I have tried and gone through the link given by u but i m not 
> successfully done this thing. Let me explain u in details.  Suppose i 
> want to monitor SMTP,PING,POP,Harddisk usage,Memory,TELNET,FTP for the 
> host 192.168.10.1,192.168.10.2,192.168.10.3----192.168.10.50.
>
> So give me the configuration example for hosts.cfg, hostgroups.cfg, 
> service.cfg and whatever file needed to be configured.

I know what you want and I know what you were originally looking for. 
As I explained yesterday there is no shortcut in defining Nagios hosts.

I will not type up everything (since that wouldn't leave any chance for 
you to learn), but I will show you a few examples that apply to what I 
told Ian yesterday.

In this case, hosts 1 and 2 run SMTP and POP, while 3 runs as an FTP 
server.

define host{
	use			host-template
	host_name	foobar1
	alias			foobar1
	address		192.168.10.1
	hostgroups	HG-all,HG-mail
	}

define host{
	use			host-template
	host_name	foobar2
	alias			foobar2
	address		192.168.10.2
	hostgroups	HG-all,HG-mail
	}

define host{
	use			host-template
	host_name	foobar3
	alias			foobar3
	address		192.168.10.3
	hostgroups	HG-all,HG-ftp
	}

define hostgroup{
	hostgroup_name	HG-all
	alias				All systems
	}

define hostgroup{
	hostgroup_name	HG-mail
	alias				All UNIX systems
	}

define hostgroup{
	hostgroup_name	HG-ftp
	alias				All UNIX systems
	}

define service{
	use					service-template
	hostgroup_name		HG-mail
	service_description		SMTP
	check_command		$WHATEVER$
	}

define service{
	use					service-template
	hostgroup_name		HG-mail
	service_description		POP
	check_command		$WHATEVER$
	}

define service{
	use					service-template
	hostgroup_name		HG-ftp
	service_description		FTP
	check_command		$WHATEVER$
	}

define service{
	use					service-template
	hostgroup_name		HG-all
	service_description		TELNET
	check_command		$WHATEVER$
	}

define service{
	use					service-template
	hostgroup_name		HG-all
	service_description		PING
	check_command		$WHATEVER$
	}

This way, you are grouping various service checks by linking them to 
groups of hosts.

So, yes. If you add new hosts to your monitoring environment you will 
need to manually add these on an individual basis. But instead of 
manually adding all the required service descriptions as well, you will 
be automatically assigning these to the hosts in question by 
"subscribing" to the relevant host groups.

> I have enable SNMP for SNMP based query on all the machine.
That's fine. You could use SNMP to monitor your hard disk and memory 
usage in two ways: by reading the SNMP objects for the specific volume, 
or by running check_disk locally by tying it to a custom SNMP object of 
your choosing. You may also run check_disk passively through NSCA or 
actively through NRPE. Make your pick :)

Cheers!


Thomas


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