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% REC_CONTROL(1)
% PowerDNS.COM BV
% April 2006
# NAME
rec_control - control pdns_recursor
# SYNOPSIS
**rec_control** [*OPTION*]... *COMMAND* [*COMMAND-OPTION*]...
DESCRIPTION
-----------
**rec_control** allows the operator to control a running instance
of the pdns_recursor.
The commands that can be passed to the recursor are described on
http://doc.powerdns.com/md/recursor/running/\#rec_control-commands
# EXAMPLES
To stop the recursor by hand, run:
`# rec_control quit`
To dump the cache to disk, execute:
`# rec_control dump-cache /tmp/the-cache`
# OPTIONS
--help
: provide this helpful message.
--config-dir=*PATH*
: Directory where the recursor.conf lives.
--socket-dir=*PATH*
: Where the controlsocket will live, please use **--config-dir** instead.
--socket-pid=*PID*
: When running in SMP mode, pid of **pdns_recursor** to control.
--timeout=*NUM*
: Number of seconds to wait for the remote PowerDNS Recursor to
respond. Set to 0 for infinite.
# COMMANDS
add-nta *DOMAIN* [*REASON*]
: Add a Negative Trust Anchor for *DOMAIN*, suffixed optionally with *REASON*.
add-ta *DOMAIN* *DSRECORD*
: Add a Trust Anchor for *DOMAIN* with DS record data *DSRECORD*. This adds the
new Trust Anchor to the existing set of Trust Anchors for *DOMAIN*.
current-queries
: Shows the currently active queries.
clear-nta *DOMAIN*...
: Remove Negative Trust Anchor for one or more *DOMAIN*s. Set domain to `'*'`
to remove all NTA's.
clear-ta [*DOMAIN*]...
: Remove Trust Anchor for one or more *DOMAIN*s. Note that removing the root
trust anchor is not possible.
dump-cache *FILENAME*
: Dumps the entire cache to *FILENAME*. This file should
not exist already, PowerDNS will refuse to overwrite it. While
dumping, the recursor will not answer questions.
dump-edns *FILENAME*
: Dumps the EDNS status to the filename mentioned. This file should
not exist already, PowerDNS will refuse to overwrite it. While
dumping, the recursor will not answer questions.
dump-nsspeeds *FILENAME*
: Dumps the nameserver speed statistics to the *FILENAME* mentioned.
This file should not exist already, PowerDNS will refuse to
overwrite it. While dumping, the recursor will not answer questions.
get *STATISTIC* [*STATISTIC*]...
: Retrieve a statistic. For items that can be queried, see
http://doc.powerdns.com/md/recursor/stats/
get-all
: Retrieve all known statistics.
get-ntas
: Get a list of the currently configured Negative Trust Anchors.
get-tas
: Get a list of the currently configured Trust Anchors.
get-parameter *KEY* [*KEY*]...
: Retrieves the specified configuration parameter(s).
get-qtypelist
: Retrieves QType statistics. Queries from cache aren't being counted yet.
help
: Shows a list of supported commands.
ping
: Check if server is alive.
quit
: Request shutdown of the recursor.
quit-nicely
: Request nice shutdown of the recursor.
reload-acls
: Reloads ACLs.
reload-lua-script [*FILENAME*]
: (Re)loads Lua script *FILENAME*. If *FILENAME* is empty, attempt to reload
the currently loaded script. This replaces the script currently loaded.
reload-lua-config [*FILENAME*]
: (Re)loads Lua configuration *FILENAME*. If *FILENAME* is empty, attempt to
reload the currently loaded file. Note that *FILENAME* will be fully executed,
any settings changed at runtime that are not modified in this file, will
still be active. Reloading RPZ, especially by AXFR, can take some time; during
which the recursor will not answer questions.
reload-zones
: Reload authoritative and forward zones. Retains current configuration
in case of errors.
set-carbon-server *CARBON SERVER* [*CARBON OURNAME*]
: Set the carbon-server setting to *CARBON SERVER*. If *CARBON OURNAME* is not
empty, also set the carbon-ourname setting to *CARBON OURNAME*.
set-dnssec-log-bogus *SETTING*
: Set dnssec-log-bogus setting to *SETTING*. Set to 'on' or 'yes' to log DNSSEC
validation failures and to 'no' or 'off' to disable logging these failures.
set-minimum-ttl *NUM*
: Set minimum-ttl-override to *NUM*.
top-queries
: Shows the top-20 queries. Statistics are over the last
'stats-ringbuffer-entries' queries.
top-largeanswer-remotes
: Shows the top-20 remote hosts causing large answers. Statistics are over the
last 'stats-ringbuffer-entries' queries.
top-remotes
: Shows the top-20 most active remote hosts. Statistics are over the
last 'stats-ringbuffer-entries' queries.
top-servfail-queries
: Shows the top-20 queries causing servfail responses. Statistics are
over the last 'stats-ringbuffer-entries' queries.
top-servfail-remotes
: Shows the top-20 most active remote hosts causing servfail responses.
Statistics are over the last 'stats-ringbuffer-entries' queries.
trace-regex *REGEX*
: Emit resolution trace for matching queries. Empty regex to disable trace.
unload-lua-script
: Unloads Lua script.
version
: Report running version.
wipe-cache *DOMAIN* [*DOMAIN*] [...]
: Wipe entries for *DOMAIN* (exact name match) from the cache. This is useful
if, for example, an important server has a new IP address, but the TTL has
not yet expired. Multiple domain names can be passed. *DOMAIN* can be
suffixed with a '$' to delete the whole tree from the cache. i.e. 'powerdns.com$'
will remove all cached entries under and including the powerdns.com name.
# BUGS
None known. File new ones at https://github.com/PowerDNS/pdns/issues.
# RESOURCES
Website: https://docs.powerdns.com, https://www.powerdns.com
# SEE ALSO
pdns_recursor(1)
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