The *named* role configures the BIND DNS server on managed nodes. It
writes `/etc/named.conf`, using a template that supports most of the
commonly-used options. The configuration can be augmented by other
templates, etc. by specifying file paths in the `named_options_include`
or `named_global_include` variables, both of which are lists.
The *samba-dc* role installs Samba on the managed node and configures it
as an Active Directory Domain controller. A custom module,
`samba_domain` handles the provisioning using `samba-tool domain
provision` in an idempotent way.
The *kerberos* role configures the MIT Kerberos library. Specifically,
it creates `/etc/krb5.conf` and populates it with some basic default
options. It also creates the `/etc/krb5.conf.d` directory, into which
other roles can write additional configuration files.
The *base* role performs the basic tasks needed to manage a node using
Ansible. Specifically, it installs the necessary packages for
manipulating SELinux policy.
The `hostname.yml` playbook does what it says on the tin: it sets the
hostname of the managed node. The `preferred_hostname` variable can be
used to specify the value to use for the hostname. If it is not set, the
name specified in the inventory is used.
Dustin