1PDNS_RECURSOR(1) PowerDNS Recursor PDNS_RECURSOR(1)
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6 pdns_recursor - The PowerDNS Recursor binary
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9 pdns_recursor [OPTION]...
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12 pdns_recursor is a high performance, simple and secure recursing name‐
13 server. It currently powers hundreds of millions internet connections.
14 The recursor is configured via a configuration file, but each item in
16 that file can be overridden on the command line.
17 This manpage lists the core set of features needed to get the PowerDNS
19 Recursor working, for full and up to date details head to
20 https://doc.powerdns.com/.
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23 To listen on 192.0.2.53 and allow the 192.0.2.0/24 subnet to recurse,
24 and run as in the background, execute:
25 # pdns_recursor --local-address=192.0.2.53 --allow-from=192.0.2.0/24 --daemon
27 To stop the recursor by hand, run:
29 # rec_control quit
31 However, the recommended way of starting and stopping the recursor is
33 to use the init.d script or systemctl(1).
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36 For authoritative listing of options, consult the online documentation
37 at <https://doc.powerdns.com/>
38 --allow-from=<networks>
40 If set, only allow these comma separated networks, with network
41 mask to recurse. For example: 192.0.2.0/24,203.0.113.128/25.
42 --auth-zones=<authzones>
44 Where authzone is <zonename>=<filename>. Serve zonename from
45 filename authoritatively. For example:
46 ds9a.nl=/var/zones/ds9a.nl,powerdns.com=/var/zones/powerdns.com.
47 --chroot=<directory>
49 chroot the process to directory.
50 --client-tcp-timeout=<num>
52 Timeout in seconds when talking to TCP clients.
53 --config
55 Show the current configuration. There are three optional values:
56 --config=default to show the default configuration. --con‐
57 fig=diff show modified options in the current configuration.
58 --config=check to check the current configuration for errors.
59 --config-dir=<directory>
61 Location of configuration directory (recursor.conf), the default
62 depends on the SYSCONFDIR option at build-time, which is usually
63 /etc/powerdns. The default can be found with pdns_recursor
64 --config | grep ' config-dir='.
65 --daemon
67 Operate as a daemon.
68 --entropy-source=<file>
70 Read new entropy from file, defaults to /dev/urandom.
71 --export-etc-hosts
73 If set, this flag will export the hostnames and IP addresses
74 mentioned in /etc/hosts.
75 --forward-zones=<forwardzones>
77 Where forwardzone is <zonename>=<address>. Queries for zonename
78 will be forwarded to address. address should be an IP address,
79 not a hostname (to prevent chicken and egg problems). Example:
80 forward-zones= ds9a.nl=213.244.168.210, powerdns.com=127.0.0.1.
81 --forward-zones-file=<filename>
83 Similar to --forward-zones, but read the options from filename.
84 filename should contain one zone per line, like:
85 ds9a.nl=213.244.168.210.
86 --help Show a summary of options.
88 --hint-file=<filename>
90 Load root hints from this filename
91 --local-address=<address>
93 Listen on address, separated by spaces or commas. Addresses
94 specified can include port numbers; any which do not include
95 port numbers will listen on --local-port.
96 --local-port=<port>
98 Listen on port.
99 --log-common-errors
101 If we should log rather common errors.
102 --max-cache-entries=<num>
104 Maximum number of entries in the main cache.
105 --max-negative-ttl=<num>
107 maximum number of seconds to keep a negative cached entry in
108 memory.
109 --max-tcp-clients=<num>
111 Maximum number of simultaneous TCP clients.
112 --max-tcp-per-client=<num>
114 If set, maximum number of TCP sessions per client (IP address).
115 --query-local-address=<address[,address...]>
117 Use address as Source IP address when sending queries.
118 --quiet
120 Suppress logging of questions and answers.
121 --server-id=<text>
123 Return text WHen queried for 'id.server' TXT, defaults to host‐
124 name.
125 --serve-rfc1918
127 On by default, this makes the server authoritatively aware of:
128 10.in-addr.arpa, 168.192.in-addr.arpa and
129 16-31.172.in-addr.arpa, which saves load on the AS112 servers.
130 Individual parts of these zones can still be loaded or for‐
131 warded.
132 --setgid=<gid>
134 If set, change group id to gid for more security.
135 --setuid=<uid>
137 If set, change user id to uid for more security.
138 --single-socket
140 If set, only use a single socket for outgoing queries.
141 --socket-dir=<directory>
143 The controlsocket will live in directory.
144 --spoof-nearmiss-max=<num>
146 If non-zero, assume spoofing after this many near misses.
147 --trace
149 if we should output heaps of logging.
150 --version-string=<text>
152 text WILL be reported on version.pdns or version.bind queries.
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155 rec_control(1) systemctl(1) https://docs.powerdns.com/recursor
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158 PowerDNS.COM BV
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161 2001-2023, PowerDNS.COM BV
162 Mar 27, 2023 PDNS_RECURSOR(1)