Evidently, some files in `/var/lib/samba` match multiple file context
rules. Thus, when running `restorecon` against the entire
`/var/lib/samba` directory, files in the `bind-dns` subdirectory may end
up with the wrong label. To work around this issue, `restorecon` is now
run only on that subdirectory to ensure the correct labels are applied.
This is likely to cause problems when a full filesystem relabel is
scheduled.
The `named` daemon does not seem to pick up all changes to the
configuration file during a graceful reload. To avoid strange states,
the daemon is now fully restarted after the configuration file is
regenerated.
The `allow-update` block in `named.conf` enumerates the hosts/networks
that are allowed to issue dynamic DNS updates. This is required in
Active Directory and other environments where clients and/or DHCP
servers create DNS records automatically.
By default, the block is omitted from the generated configuration file.
The `named_allow_update` variable can be set to a list of patterns (e.g.
CIDR blocks, ACL names, etc.) to populate it.
The *samba-dc* role now supports joining an existing Active Directory
domain as an additional domain controller. The `samba_is_first_dc` variable
controls whether the machine will be provisioned with a new domain (when
true) or added to an existing domain (when false).
Joining an existing domain naturally requires credentials of a user with
permission to add a new DC, the `samba_dc_join_username` and
`samba_dc_join_password` variables can be used to specify them.
Alternatively, if these variables are not defined, then the process will
attempt to use Kerberos credentials. This would require playbooks to
make a ticket-granting-ticket available somehow, such as by executing
`kinit` prior to applying the *samba-dc* role.
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.
Dustin