[CentOS] CentOS 6 as DNS-Server

Tue May 10 19:36:42 UTC 2016
Александр Кириллов <nevis2us at infoline.su>

>> I'm also using ddns and have my zone files in 
>> /var/named/chroot/var/named/dynamic.
> are you using DDNS in DualStack (IPv4 and IPv6 together) or do you
> have only DHCP or DHCPv6 and not both?

IPv4 only.

>        By default, SELinux prevents any role from modifying 
> named_zone_t
>        files; this means that files in the zone database directory 
> cannot be
>        modified by dynamic DNS (DDNS) updates or zone transfers.
>        The Red Hat BIND distribution and SELinux policy creates three
>        directories where named is allowed to create and modify files:
>        /var/named/slaves, /var/named/dynamic /var/named/data. By 
> placing files
>        you want named to modify, such as slave or DDNS updateable zone 
> files
>        and database / statistics dump files in these directories, named 
> will
>        work normally and no further operator action is required. Files 
> in
>        these directories are automatically assigned the ’named_cache_t’ 
> file
>        context, which SELinux allows named to write."

That's probably why I have updateable zone files in chrooted 
Default targeted policy comes with necessary rules for chrooted bind. 

# semanage fcontext -l | grep named_