pdns_recursor man page

pdns_recursor — high-performance, simple and secure recursing nameserver

Synopsis

pdns_recursor [OPTION]...

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 http://doc.powerdns.com/built-in-recurs…

Examples

To listen on 192.0.2.53 and allow the 192.0.2.0/24 subnet to recurse, and run as a daemon, execute:

# pdns_recursor --local-address=192.0.2.53 --allow-from=192.0.2.0/24 --daemon

To stop the recursor by hand, run:

# rec_control quit

However, the recommended way of starting and stopping the recursor is to use the init.d script provided.

Options

For authoritative listing of options, consult the online documentation at http://doc.powerdns.com/md/recursor/set…

--allow-from=NETWORK[,NETWORK]...
If set, only allow these comma separated NETWORKs, with network mask to recurse. For example: 192.0.2.0/24,203.0.113.128/25.
--auth-zones=ZONENAME=FILENAME[,ZONENAME=FILENAME]...
Serve ZONENAME from FILENAME authoritatively. For example: ds9a.nl=/var/zones/ds9a.nl,powerdns.com=/var/zones/powerdns.com.
--chroot=DIRECTORY
chroot the process to DIRECTORY.
--client-tcp-timeout=NUM
Timeout in seconds when talking to TCP clients.
--config-dir=DIRECTORY
Location of configuration directory (recursor.conf), the default depends on the SYSCONFDIR option at build-time, which is usually /etc/powerdns. The default can be found with pdns_recursor --config | grep ' config-dir='.
--daemon
Operate as a daemon.
--delegation-only
Which domains we only accept delegations from (a Verisign special).
--entropy-source=FILE
Read new entropy from FILE, defaults to /dev/urandom.
--export-etc-hosts
If set, this flag will export the hostnames and IP addresses mentioned in /etc/hosts.
--forward-zones=ZONENAME=ADDRESS[,ZONENAME=ADDRESS]...
Queries for ZONENAME will be forwarded to ADDRESS. ADDRESS should be an IP address, not a hostname (to prevent chicken and egg problems). Example: forward-zones= ds9a.nl=213.244.168.210, powerdns.com=127.0.0.1.
--forward-zones-file=FILENAME
Similar to --forward-zones, but read the options from FILENAME. FILENAME should contain one zone per line, like: ds9a.nl=213.244.168.210.
--help
Show a summary of options.
--hint-file=FILENAME
Load root hints from this FILENAME
--local-address=ADDRESS[,ADDRESS]...
Listen on ADDRESS, separated by spaces or commas.
--local-port=PORT
Listen on PORT.
--log-common-errors
If we should log rather common errors.
--max-cache-entries=NUM
Maximum number of entries in the main cache.
--max-negative-ttl=NUM
maximum number of seconds to keep a negative cached entry in memory.
--max-tcp-clients=NUM
Maximum number of simultaneous TCP clients.
--max-tcp-per-client
If set, maximum number of TCP sessions per client (IP address).
--query-local-address=ADDRESS
Use ADDRESS as Source IP address when sending queries.
--query-local-address6=ADDRESS
Send out local IPv6 queries from ADDRESS. Disabled by default, which also disables outgoing IPv6 support. A useful setting is '::0'.
--quiet
Suppress logging of questions and answers.
--server-id=TEXT
Return TEXT 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=GID
If set, change group id to GID for more security.
--setuid=UID
If set, change user id to UID for more security.
--single-socket
If set, only use a single socket for outgoing queries.
--socket-dir=DIRECTORY
The controlsocket will live in DIRECTORY.
--spoof-nearmiss-max=NUM
If non-zero, assume spoofing after this many near misses.
--trace
if we should output heaps of logging.
--version-string=TEXT
TEXT will be reported on version.pdns or version.bind queries.

Bugs

None known. File new ones at https://github.com/PowerDNS/pdns/issues.

Resources

Website: http://www.powerdns.com, https://github.com/PowerDNS/pdns

See Also

rec_control(1)

Authors

PowerDNS.COM BV.

Referenced By

rec_control(1).

March 2008