mydns.conf(5)

NAME

mydns.conf - mydns(8) configuration file.

DESCRIPTION

mydns.conf is read by mydns(8) on startup. The default
location of this file is /etc/mydns.conf.
A mydns.conf might look something like this:

# /etc/mydns.conf
# Configuration file for the MyDNS name daemon
db-host = dbserver.example.com
db-user = mydnsuser
db-password = Gr8DNS!
Each line in the file may contain only one configuration
variable. All allowable configuration variables are described in
this man page. The syntax for a configuration line is `option [=
value]'. All configuration variables have default values, which
are used if the variable is omitted from the mydns.conf. These
defaults are listed in parentheses after the variable syntax.
All text following a hash mark (`#') and empty lines are
ignored. If you need to specify an actual hash mark in a option
value, escape it by prefixing it with a backslash (´) character.
The mydns(8) program has a convenient command-line option
that will output all current configuration variables in
mydns.conf format. If you are creating a mydns.conf file for the
first time, this is a great way to create a template that you can
customize. See mydns(8) for details.

DATABASE INFORMATION

The following configuration variables tell MyDNS about
your database server.
db-host = hostname (`localhost')
Connect to the database server located at hostname.
db-user = username
Use username when authenticating with the database
server.
db-password = password
Use password when authenticating with the database
server.
database = name (`mydns')
Read resource record information from the database
called name. The specified dbuser must have SELECT privileges on
the specified database.

GENERAL OPTIONS

The following configuration variables control the general
behavior of the name daemon.
user = username (`nobody')
Run the name daemon with the permissions of user
username.
group = groupname (`nogroup')
Run the name daemon with the permissions of group
groupname.
listen = address (`*')
The name daemon should listen on address. If
address is *, listen on all addresses. This must be an IP ad
dress in numbers-and-dots format, or *. Multiple addresses may
be specified, either separated by commas, or listed on separate
listen lines, or both. If a port number other than port 53 is
desired, append `:port' to the address.
no-listen = address (`*')
The name daemon should NOT listen on address, even
if it was specified by listen. This must be an IP address in
numbers-and-dots format, or *. Multiple addresses may be speci
fied, either separated by commas, or listed on separate listen
lines, or both. If a port number other than port 53 is desired,
append `:port' to the address.

CACHE OPTIONS

The following configuration variables affect the cache
used internally by the name daemon.
zone-cache-size = number (`4096')
The zone data cache will not contain more than
number entries. The average entry in the cache is about 128
bytes. If number is 0, the zone data cache will not be used.
zone-cache-expire = seconds (`60')
Entries expire from the zone data cache once they
are seconds old. If seconds is 0, the zone data cache will not
be used. If the TTL for any RR in the zone is less than the
cache expire time, the TTL will be honored.
reply-cache-size = number (`1024')
The reply cache will not contain more than number
entries. The average entry in the cache is about 128 bytes. If
number is 0, the reply cache will not be used.
reply-cache-expire = seconds (`30')
Entries expire from the reply cache once they are
seconds old. If seconds is 0, the reply cache will not be used.

ESOTERICA

The following configuration variables affect the name dae
mon also, but most users will not need to use them.
log = facility (`LOG_DAEMON')
The name daemon should log via syslog facility
facility. facility may be LOG_DAEMON or LOG_LOCAL0 through

LOG_LOCAL7

stderr only.
pidfile = filename (`/var/run/named.pid')
Create a PID file for the name daemon called
filename.
timeout = seconds (`120')
Incoming queries time out if a reply could not be
sent after seconds have elapsed.
multicpu = cpucount (`1')
Run with multiple processes to support cpucount
number of processors.
allow-axfr = bool (`no')
Should DNS-based zone transfers be allowed?
allow-tcp = bool (`no')
Should TCP requests be allowed? (not recommended)
allow-update = bool (`no')
Should DNS-based zone updates (RFC 2136) be al
lowed?
ignore-minimum = bool (`no')
Should MyDNS ignore the minimum TTL for zones?
soa-table = name (`soa')
The name of the table containing SOA records.
rr-table = name (`rr')
The name of the table containing resource record
data.
soa-where = string
An extra WHERE clause to append to queries select
ing records from the `soa' table.
rr-where = string
An extra WHERE clause to append to queries select
ing records from the `rr' table.
recursive = address
If this option is specified, address is the address
of a DNS server that accepts recursive queries. If MyDNS re
ceives a query where recursion is desired, and the zone is not
local, MyDNS will forward the query to the server at address and
return the result to the client.

SECURITY

The mydns.conf file should be readable only by the root
user (uid=0) since it typically contains a username and password
allowing access to your database.

FILES

/etc/mydns.conf
The default location of the configuration file.

SEE ALSO

mydns(8)
mydns 1.1.0 Feb 2007
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