Overriding a Puppet Class when using Inheritance - linux

Question

I'm trying to use class inheritance for puppet. There is a base class named foo and an inherited class named bar. Overriding file or package resources are quite fine and works properly. But at the same time i'm using a custom module for configuring sudo.
The problem arises when i try to override sudo class from inside class bar. Puppet classes are as follows:
class foo {
$nrpe_plugin_pkgs = [ .... ]
service { 'nrpe service':
..
}
package { $nrpe_plugin_pkgs:
..
}
file { '/etc/nagios/nrpe.cfg':
..
}
file { '/etc/resolv.conf':
..
}
class { 'sudo':
purge => true,
config_file_replace => true,
}
sudo::conf { 'sudo_conf':
priority => 10,
content => [
'%gr1 ALL=(userfoo) NOPASSWD: ALL',
'%gr1 ALL=(root) NOPASSWD: /usr/bin/wbinfo *',
]
}
}
class bar inherits foo {
File['/etc/resolv.conf'] {
..
}
sudo::conf { 'sudo_conf':
priority => 10,
content => [
'%gr2 ALL=NOPASSWD:/bin/chown userbar\:gr2 /dirbar/*',
'%gr2 ALL=NOPASSWD:/bin/chown -R userbar\:gr2 /dirbar/*',
'%gr2 ALL=NOPASSWD:/bin/chmod * /dirbar/*',
]
}
}
I just want to customize only resolv.conf and sudo config, but i'm getting error as follows:
Error while evaluating a Resource Statement, Evaluation Error: Error
while evaluating a Resource Statement, Duplicate declaration:
Sudo::Conf[sudo_conf] is already declared in file
/etc/puppetlabs/code/environments/foobar_servers/manifests/foobar.pp:80;
cannot redeclare at
/etc/puppetlabs/code/environments/foobar_servers/manifests/foobar.pp:335
at
/etc/puppetlabs/code/environments/foobar_servers/manifests/foobar.pp:335:3
on node foobartest01
/etc/sudoers.d/10_sudo_conf file expected to be created. How can i achieve that?
Using: Puppet 4.9 Community version.
Any help appreciated.

Answer 1

The resolv.conf override works here, because you're using the correct syntax:
class bar inherits foo {
File['/etc/resolv.conf'] {
..
}
But the syntax for the next line where you try to override is different, so it fails:
sudo::conf { 'sudo_conf':
This is the syntax to declare a new resource (hence why you get a duplicate error) rather than to override an existing resource. It should be:
Sudo::Conf['sudo_conf'] {
priority => 10,
content => [
'%gr2 ALL=NOPASSWD:/bin/chown userbar\:gr2 /dirbar/*',
'%gr2 ALL=NOPASSWD:/bin/chown -R userbar\:gr2 /dirbar/*',
'%gr2 ALL=NOPASSWD:/bin/chmod * /dirbar/*',
]
}