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nagios, same command for multiple hosts

Hi, I was wondering if it is possible in Nagios (monitoring software) to define a command to run for multiple hosts in one go.
The normal way is to write a stanza for each host. Since all my hosts and commands are the same I would like to define a group of hosts to which apply the same monitor-command. Is that possible? How?
If possible I would like to avoid plugins or extensions.

I assume you mean you use the same cmds/checks for all hosts (you can't have all the 'same hosts' ;-) )
Anyway, create a stanza for each cmd for 1 host, then write a short script to cp the file for each extra host and substitute eg via sed, the name of each host, then concat the files together eg:
cat host1.cfg host2.cfg ... >> hosts.cfg

Thanks for the try. But I found out it can be done with the hostgroup_name definition in nagios. Or you can use a comma-separated list of multiple hosts in host_name.

So /etc/nagios/services.cfg would look something like this:

Code:

define service{

    use    generic-service

    host_name      host1,host2

    service_description      ping

<SNIP>

    check_command      check_ping!100.0,20%!500.0,60%

    }

Or use the definition hostgroup_name instead of host_name:

Code:

define service{

    use    generic-service

    hostgroup_name      group1,group2

    service_description      ping

<SNIP>

    check_command      check_ping!100.0,20%!500.0,60%

    }

Then you also have to define hostgroups in /etc/nagios/hostgroups.cfg