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Diffstat (limited to 'src/knot/modules/dnstap/dnstap.rst')
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diff --git a/src/knot/modules/dnstap/dnstap.rst b/src/knot/modules/dnstap/dnstap.rst new file mode 100644 index 0000000..591bda5 --- /dev/null +++ b/src/knot/modules/dnstap/dnstap.rst @@ -0,0 +1,113 @@ +.. _mod-dnstap: + +``dnstap`` – Dnstap traffic logging +=================================== + +A module for query and response logging based on the dnstap_ library. +You can capture either all or zone-specific queries and responses; usually +you want to do the former. + +Example +------- + +The configuration comprises only a :ref:`mod-dnstap_sink` path parameter, +which can be either a file or a UNIX socket:: + + mod-dnstap: + - id: capture_all + sink: /tmp/capture.tap + + template: + - id: default + global-module: mod-dnstap/capture_all + +.. NOTE:: + To be able to use a Unix socket you need an external program to create it. + Knot DNS connects to it as a client using the libfstrm library. It operates + exactly like syslog. + +.. NOTE:: + Dnstap log files can also be created or read using :doc:`kdig<man_kdig>`. + +.. _dnstap: https://dnstap.info/ + +Module reference +---------------- + +For all queries logging, use this module in the *default* template. For +zone-specific logging, use this module in the proper zone configuration. + +:: + + mod-dnstap: + - id: STR + sink: STR + identity: STR + version: STR + log-queries: BOOL + log-responses: BOOL + responses-with-queries: BOOL + +.. _mod-dnstap_id: + +id +.. + +A module identifier. + +.. _mod-dnstap_sink: + +sink +.... + +A sink path, which can be either a file or a UNIX socket when prefixed with +``unix:``. + +*Required* + +.. WARNING:: + File is overwritten on server startup or reload. + +.. _mod-dnstap_identity: + +identity +........ + +A DNS server identity. Set empty value to disable. + +*Default:* FQDN hostname + +.. _mod-dnstap_version: + +version +....... + +A DNS server version. Set empty value to disable. + +*Default:* server version + +.. _mod-dnstap_log-queries: + +log-queries +........... + +If enabled, query messages will be logged. + +*Default:* ``on`` + +.. _mod-dnstap_log-responses: + +log-responses +............. + +If enabled, response messages will be logged. + +*Default:* ``on`` + +responses-with-queries +...................... + +If enabled, dnstap ``AUTH_RESPONSE`` messages will also include the original +query message as well as the response message sent by the server. + +*Default:* ``off`` |