<s>
mysqlBind/unxsBind	O
is	O
a	O
DNS	B-Protocol
management	I-Protocol
software	I-Protocol
system	O
.	O
</s>
<s>
It	O
supports	O
Internet	O
Systems	O
Consortium	O
BIND	B-Protocol
Domain	B-Protocol
Name	I-Protocol
System	I-Protocol
(	O
DNS	B-Protocol
)	O
and	O
is	O
distributed	O
as	O
open	B-Application
source	I-Application
software	I-Application
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
mysqlBind/unxsBind	O
has	O
been	O
in	O
use	O
since	O
the	O
late	O
1990s	O
.	O
</s>
<s>
It	O
initially	O
was	O
designed	O
to	O
replace	O
perl/bash	O
based	O
sets	O
of	O
maintenance	O
scripts	O
that	O
made	O
deployment	O
and	O
upkeep	O
of	O
large	O
DNS	B-Protocol
systems	I-Protocol
time	O
consuming	O
and	O
prone	O
to	O
human	O
error	O
.	O
</s>
<s>
mysqlBind	B-Protocol
(	O
now	O
unxsBind	B-Protocol
)	O
centralizes	O
all	O
data	O
in	O
a	O
replicated	O
SQL	B-Language
database	I-Language
and	O
limits	O
any	O
DNS	B-Protocol
configuration	O
errors	O
to	O
one	O
software	O
package	O
failure	O
point	O
.	O
</s>
<s>
unxsBind	B-Protocol
is	O
a	O
BIND9+	O
server	O
management	O
system	O
only	O
,	O
not	O
a	O
DNS	B-Protocol
server	O
,	O
and	O
generates	O
DNS	B-Protocol
server	O
specific	O
configuration	O
files	O
so	O
that	O
the	O
DNS	B-Protocol
server	O
does	O
not	O
have	O
to	O
rely	O
on	O
a	O
live	O
SQL	B-Language
database	I-Language
.	O
</s>
<s>
The	O
unxsBind	B-Protocol
used	O
SQL	B-Language
server	O
is	O
only	O
needed	O
to	O
be	O
operational	O
for	O
administration	O
and	O
deployment	O
of	O
new	O
zones	O
,	O
new	O
resource	O
records	O
,	O
resource	O
records	O
changes	O
and	O
zone	B-Protocol
SOA	O
changes	O
.	O
</s>
<s>
This	O
non-reliance	O
on	O
a	O
live	O
SQL	B-Language
database	I-Language
has	O
been	O
a	O
major	O
point	O
for	O
reliable	O
deployment	O
of	O
large	O
scale	O
DNS	B-Protocol
services	O
.	O
</s>
<s>
unxsBind	B-Protocol
is	O
based	O
on	O
a	O
"	O
Company/Organization	O
-Contact-Role	O
"	O
login	O
and	O
permissions	O
model	O
,	O
such	O
that	O
end	O
user	O
organization	O
contacts	O
can	O
manage	O
their	O
own	O
DNS	B-Protocol
data	O
from	O
a	O
shared	O
infrastructure	O
.	O
</s>
<s>
This	O
unxsBind	B-Protocol
shared	O
infrastructure	O
supports	O
an	O
unlimited	O
number	O
of	O
organizations	O
that	O
can	O
then	O
administrate	O
their	O
own	O
DNS	B-Protocol
resources	O
,	O
such	O
as	O
IP	B-Protocol
blocks	O
,	O
zones	O
and	O
resource	O
records	O
.	O
</s>
<s>
unxsBind	B-Protocol
provides	O
for	O
the	O
centralized	O
management	O
of	O
multiple	O
independent	O
name	O
servers	O
across	O
data	O
center	O
boundaries	O
.	O
</s>
<s>
The	O
unxsBind	B-Protocol
system	O
consists	O
of	O
a	O
back	O
end	O
(	O
unxsBind/iDNS	O
)	O
interface	O
,	O
and	O
several	O
example	O
end	O
user	O
interfaces	O
:	O
The	O
idnsAdmin	O
admin	O
interface	O
,	O
and	O
the	O
end	O
user	O
idnsOrg	O
and	O
vdnsOrg	O
interfaces	O
.	O
</s>
<s>
All	O
provided	O
interfaces	O
run	O
on	O
SQL	B-Language
originated	O
HTML/CSS/JavaScript	O
templates	O
organized	O
in	O
types	O
and	O
sets	O
for	O
on	O
the	O
fly	O
interface	O
"	O
skin	O
"	O
changes	O
and	O
new	O
interfaces	O
.	O
</s>
<s>
This	O
along	O
with	O
the	O
backend/DNS	O
-configuration-engine	O
and	O
front-end	O
interface	O
model	O
used	O
in	O
unxsBind	B-Protocol
is	O
meant	O
to	O
provide	O
the	O
DNS	B-Protocol
service	O
provider	O
with	O
a	O
simple	O
path	O
to	O
provision	O
their	O
own	O
custom	O
interfaces	O
with	O
advanced	O
functionality	O
.	O
</s>
<s>
For	O
example	O
,	O
a	O
DNS	B-Protocol
service	O
provider	O
branded	O
AJAX	B-Device
based	O
interface	O
with	O
punycode	B-General_Concept
hostname	O
conversion	O
for	O
IDNA	B-Language
support	O
.	O
</s>
<s>
Recent	O
versions	O
allow	O
unlimited	O
split	B-Protocol
horizon	I-Protocol
configurations	O
(	O
multiple	O
BIND	O
9.3	O
+	O
views	O
)	O
.	O
</s>
<s>
NAPTR	B-Protocol
,	O
AAAA	B-Protocol
,	O
and	O
many	O
other	O
complex	O
resource	O
records	O
are	O
supported	O
with	O
input	O
validation	O
and	O
contextual	O
glossary	O
based	O
help	O
.	O
</s>
<s>
Wizards	O
are	O
provided	O
for	O
error	O
prone	O
complex	O
DNS	B-Protocol
configuration	O
management	O
operations	O
,	O
e.g.	O
</s>
<s>
in-addr.arpa	O
reverse	O
dns	B-Protocol
NS	O
delegation	O
using	O
CIDR	B-Protocol
and	O
$GENERATE	O
directives	O
.	O
</s>
<s>
LDAP	B-Protocol
login	O
support	O
is	O
provided	O
for	O
the	O
vdnsOrg	O
interface	O
.	O
</s>
<s>
A	O
CentOS	O
5.2	O
+	O
yum	B-Application
installable	O
version	O
is	O
available	O
.	O
</s>
<s>
Advanced	O
features	O
such	O
as	O
HA	O
and	O
LDAP	B-Protocol
single	O
sign-on	O
require	O
that	O
the	O
system	O
be	O
configured	O
and	O
installed	O
from	O
source	O
.	O
</s>
