SYNOPSIS

pdns_recursor [--daemon] [--local-address] [--help, -h] [--allow-from]

DESCRIPTION

pdns_recursor(1) is a high performance, simple and secure recursing nameserver. It currently powers over two million internet connections.

The recursor is configured via a configuration file, but each item in that file can be overridden on the command line.

This manpage lists the core set of features needed to get the PowerDNS recursor working, for full and up to date details head to \m[blue]http://doc.powerdns.com/built-in-recursor.html\m[]

EXAMPLES

To listen on 1.2.3.4 and allow the 1.2.3.0/8 subnet to recurse, and run as a daemon, execute:

# pdns_recursor --local-address=1.2.3.4 --allow-from=1.2.3.0/8 --daemon

To stop the recursor by hand, run:

# rec_control quit
Alternatively, use the init.d script provided.

OPTIONS

For authoritative listing of options, consult the documentation referenced above.

--aaaa-additional-processing

turn on to do AAAA additional processing (slow)

--allow-from

If set, only allow these comma separated netmasks to recurse

--auth-can-lower-ttl

Authoritative zones can transmit a TTL value that is lower than that specified in the parent zone. This is called a delegation inconsistency. To follow RFC 2181 paragraphs 5.2 and 5.4 to the letter, enable this feature. This will mean a slight deterioration of performance, and it will not solve any problems, but does make the recursor more standards compliant. Not recommended unless you have to tick an RFC 2181 compliant box. Off by default.

--auth-zones

Comma separated list of zonename=filename pairs. Zones read from these files are served authoritatively. Example: auth-zones= ds9a.nl=/var/zones/ds9a.nl, powerdns.com=/var/zones/powerdns.com. Available since 3.1.

--chroot

switch to chroot jail

--client-tcp-timeout

Timeout in seconds when talking to TCP clients

--config-dir

Location of configuration directory (recursor.conf)

--daemon

Operate as a daemon

--delegation-only

Which domains we only accept delegations from

--entropy-source

Where to read new entropy from, defaults to /dev/urandom.

--export-etc-hosts

If set, this flag will export the host names and IP addresses mentioned in /etc/hosts. Available since 3.1.

--fork

If set, fork the daemon for possible double performance

--forward-zones

Comma separated list of zonename=IP pairs. Queries for zones listed here will be forwarded to the IP address listed. forward-zones= ds9a.nl=213.244.168.210, powerdns.com=127.0.0.1. Available since 3.1. For more details, see the manual.

--forward-zones-file

listed here will be forwarded to the IP address listed. One zone per line, like: ds9a.nl=213.244.168.210 Available since 3.1.5. For more details, see the manual.

--hint-file

If set, load root hints from this file

--local-address

IP addresses to listen on, separated by spaces or commas

--local-port

port to listen on

--log-common-errors

If we should log rather common errors

--max-cache-entries

If set, maximum number of entries in the main cache

--max-negative-ttl

maximum number of seconds to keep a negative cached entry in memory

--max-tcp-clients

Maximum number of simultaneous TCP clients

--max-tcp-per-client

If set, maximum number of TCP sessions per client (IP address)

--query-local-address

Source IP address for sending queries

--query-local-address6

Send out local IPv6 queries from this address. Disabled by default, which also disables outgoing IPv6 support. A useful setting is ::0.

--quiet

Suppress logging of questions and answers

--remotes-ringbuffer-entries

maximum number of packets to store statistics for

--server-id

Returned when queried for server.id TXT, defaults to hostname

--serve-rfc1918

On by default, this makes the server authoritatively aware of: 10.in-addr.arpa, 168.192.in-addr.arpa and 16-31.172.in-addr.arpa, which saves load on the AS112 servers. Individual parts of these zones can still be loaded or forwarded.

--setgid

If set, change group id to this gid for more security

--setuid

If set, change user id to this uid for more security

--single-socket

If set, only use a single socket for outgoing queries

--socket-dir

Where the controlsocket will live

--spoof-nearmiss-max

If non-zero, assume spoofing after this many near misses

--trace

if we should output heaps of logging

--version-string

string reported on version.pdns or version.bind

BUGS

None known. File new ones at \m[blue]http://wiki.powerdns.com\m[].

AUTHOR

Written by PowerDNS.COM BV, bert hubert, <\m[blue][email protected]\m[]\s-2\u[1]\d\s+2>

RESOURCES

Website: \m[blue]http://wiki.powerdns.com\m[], \m[blue]http://www.powerdns.com\m[]

RELATED TO pdns_recursor…

COPYING

Copyright © 2006 PowerDNS.COM BV. Free use of this software is granted under the terms of the GNU General Public License (GPL) version 2.

AUTHOR

bert hubert <[email protected]>

Author.

NOTES