Hello !
I'm using a lot of nagios_ commands in my puppet manifests and I saw a
problem when using 'undef' in exported resources :
Here is a simple example :
define nagios::service::distributed ($ensure=present,
$service_description, $host_name=false, $contact_groups=false) {
nagios_service {$name:
ensure => $ensure,
use => "generic-service-active",
host_name => $host_name ? {false => $hostname, default => $host_name},
check_command => $name,
tag => "nagios",
service_description => $service_description,
target => "$nagios_cfg_dir/services.cfg",
require => File["$nagios_cfg_dir/services.cfg"],
notify => Exec["nagios-reload"],
}
@@nagios_service {"@@$name on $hostname":
ensure => $ensure,
use => "generic-service-passive",
host_name => $host_name ? {false => $hostname, default => $host_name},
tag => "nagios",
service_description => $service_description,
target => "$nagios_cfg_dir/services.cfg",
require => File["$nagios_cfg_dir/services.cfg"],
notify => Exec["nagios-reload"],
contact_groups => $contact_groups ? {false => undef, default =>
$contact_groups},
}
}
and I use this definition like this (without argument $contact_groups) :
nagios::service::distributed {"check_local_du":
ensure => present,
service_description => "disk usage",
}
In this case, $contact_groups is not defined, so 'undef' allows you to
ignore this attribute. It work fine in nagios_service but in
@@nagios_service this attribute is put into the mysql database and
collected by the central server as if this attribute value is the
string "undef".
IMHO this attribute should be ignored and not inserted into the
database, right ?
Bug or limitation of the keyword 'undef' ?
Thanks in advance,
Mathieu
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