Align documentation for duplicate repository

[TheBigfoot]

I was just trying to use the icinga2 and icingaweb2 module on the same host. It failed with "Duplicate declaration: Yumrepo[icinga-stable-release]", as this is already defined.

This is correct, but maybe you should add a little note about this in the docs.

[lingfish]

It's not particularly clear what to do when faced with this situation...

[ikirker]

IIRC you're supposed to declare the Yumrepo as a a "virtual resource" and then realize it in both modules, since virtual resources can be "realized" more than once (but the relevant actual resource will still only be managed once).

There's some information about it in the docs, but I don't have any experience of actually using it in production: https://docs.puppet.com/puppet/4.10/lang_virtual.html#declaring-a-virtual-resource

[rgevaert]

I had the same issue on Debian. A work around could be to disable it in one class.
@ikirker that would work, but would still lead to confusion that the package will or will not be installed from upstream or distro repo. Depending on the order.

[yaron-idan]

I've tried disabling it on one of the packages and got unexpected behavior each time for the package I disabled it for (for example import_schema failed on icingweb2 because the schema file was not where the puppet class expected it to be)

Would really appreciate an example of a single host icinga2 and icingaweb2 setup.

[rgevaert]

  class { '::icinga2':
    manage_repo => true,
  }

  class {'icingaweb2':
    manage_repo => false,
    import_schema => true,
    db_type       => 'mysql',
    db_host       => $icingaweb2_db_host,
    db_username   => $icingaweb2_db_user,
    db_password   => $icingaweb2_db_pass,
    require       => [Mysql::Db['icingaweb2'],Class['icinga2']],
  }

[yaron-idan]

Thanks @rgevaert , this does start icinga2 and icingaweb2 on the same host without giving me the error I was getting. It still doesn't config icingaweb2 to use icinga2 as a backend and I can't find an example for that in the docs but that's sidetracking the issue a bit.

[bobapple]

Ref: voxpupuli/puppet-icinga2#353