Provided by: knot_3.1.6-1ubuntu1_amd64 bug

NAME

       knotc - Knot DNS control utility

SYNOPSIS

       knotc [parameters] action [action_args]

DESCRIPTION

       This program controls a running knotd process using a socket.

       If  an  action  is  specified,  it  is performed and knotc exits, otherwise the program is
       executed in the interactive mode.

   Options
       -c, --config file
              Use a textual configuration file (default is /etc/knot/knot.conf).

       -C, --confdb directory
              Use a binary configuration database directory  (default  is  /var/lib/knot/confdb).
              The  default  configuration  database,  if  exists, has a preference to the default
              configuration file.

       -m, --max-conf-size MiB
              Set maximum size of the configuration database (default is 500 MiB,  maximum  10000
              MiB).

       -s, --socket path
              Use a control UNIX socket path (default is /run/knot/knot.sock).

       -t, --timeout seconds
              Use  a  control  timeout  in  seconds.  Set to 0 for infinity (default is 60).  The
              control socket operations are also subject to the  timeout  parameter  set  on  the
              server side in server's Control configuration section.

       -b, --blocking
              Zone  event  trigger  commands wait until the event is finished. Control timeout is
              set to infinity if not forced by explicit timeout specification.

       -f, --force
              Forced operation. Overrides some checks.

       -v, --verbose
              Enable debug output.

       -h, --help
              Print the program help.

       -V, --version
              Print the program version.

   Actions
       status [detail]
              Check if the server is running. Details are version for the running server version,
              workers for the numbers of worker threads, or configure for the configure summary.

       stop   Stop the server if running.

       reload Reload the server configuration and modified zone files. All open zone transactions
              will be aborted!

       stats [module[.counter]]
              Show global statistics counter(s). To print also counters with value 0,  use  force
              option.

       zone-check [zone...]
              Test  if  the  server can load the zone. Semantic checks are executed if enabled in
              the configuration. If invoked with the force option,  an  error  is  returned  when
              semantic check warning appears. (*)

       zone-status [zone...] [filter]
              Show  the  zone  status.  Filters  are  +role,  +serial, +transaction, +events, and
              +freeze.

       zone-reload [zone...]
              Trigger a zone reload from a disk  without  checking  its  modification  time.  For
              secondary  zone, the refresh event from primary server(s) is scheduled; for primary
              zone,  the  notify  event  to  secondary  server(s)  is  scheduled.  An  open  zone
              transaction  will  be  aborted! If invoked with the force option, also zone modules
              will be re-loaded, but blocking mode might not work reliably. (#)

       zone-refresh [zone...]
              Trigger a check for the zone serial on the zone's primary server.  If  the  primary
              server  has  a  newer  zone,  a  transfer  is  scheduled. This command is valid for
              secondary zones. (#)

       zone-retransfer [zone...]
              Trigger a zone transfer from the zone's primary server. The  server  doesn't  check
              the serial of the primary server's zone. This command is valid for secondary zones.
              (#)

       zone-notify [zone...]
              Trigger a NOTIFY message to all configured remotes. This can  help  in  cases  when
              previous NOTIFY had been lost or the secondary servers have been offline. (#)

       zone-flush [zone...] [+outdir directory]
              Trigger a zone journal flush to the configured zone file. If an output directory is
              specified, the current zone is immediately dumped (in the blocking mode) to a  zone
              file  in  the specified directory. See Notes below about the directory permissions.
              (#)

       zone-backup [zone...] +backupdir directory [filter...]
              Trigger a zone data and  metadata  backup  to  a  specified  directory.   Available
              filters  are  +zonefile,  +journal,  +timers, +kaspdb, +catalog, and their negative
              counterparts +nozonefile, +nojournal, +notimers, +nokaspdb,  and  +nocatalog.  With
              these filters set, zone contents, zone's journal, zone related timers, zone related
              data in the KASP database together with keys, and zone's catalog, respectively, are
              backed  up,  or  omitted  from  the backup. By default, filters +zonefile, +timers,
              +kaspdb, +catalog, and +nojournal are set. Setting a filter  for  an  item  doesn't
              change  default  settings  for  other items. If zone flushing is disabled, original
              zone file is backed up instead of writing out zone contents to a  file.  See  Notes
              below about the directory permissions. (#)

       zone-restore [zone...] +backupdir directory [filter...]
              Trigger  a  zone  data  and  metadata  restore  from  a specified backup directory.
              Optional filters are equivalent to the same filters of zone-backup.   Restore  from
              backups  created  by  Knot  DNS  releases  prior  to 3.1 is possible with the force
              option. See Notes below about the directory permissions. (#)

       zone-sign [zone...]
              Trigger a DNSSEC re-sign of the zone. Existing signatures will  be  dropped.   This
              command is valid for zones with DNSSEC signing enabled. (#)

       zone-keys-load [zone...]
              Trigger  a load of DNSSEC keys and other signing material from KASP database (which
              might have been  altered  manually).  If  suitable,  re-sign  the  zone  afterwards
              (keeping valid signatures intact). (#)

       zone-key-rollover zone key_type
              Trigger immediate key rollover. Publish new key and start a key rollover, even when
              the key has a lifetime to go. Key type can be ksk  (also  for  CSK)  or  zsk.  This
              command  is  valid  for  zones  with  DNSSEC  signing  and automatic key management
              enabled. Note that complete key rollover consists of several steps and the blocking
              mode relates to the initial one only! (#)

       zone-ksk-submitted zone...
              Use  when  the  zone's KSK rollover is in submission phase. By calling this command
              the user confirms manually that the parent zone contains DS record for the new  KSK
              in submission phase and the old KSK can be retired. (#)

       zone-freeze [zone...]
              Trigger  a zone freeze. All running events will be finished and all new and pending
              (planned) zone-changing events (load, refresh, update, flush, and  DNSSEC  signing)
              will be held up until the zone is thawed. (#)

       zone-thaw [zone...]
              Trigger dismissal of zone freeze. (#)

       zone-xfr-freeze [zone...]
              Temporarily disable outgoing AXFR/IXFR for the zone(s). (#)

       zone-xfr-thaw [zone...]
              Dismiss outgoing XFR freeze. (#)

       zone-read zone [owner [type]]
              Get zone data that are currently being presented.

       zone-begin zone...
              Begin a zone transaction.

       zone-commit zone...
              Commit the zone transaction. All changes are applied to the zone.

       zone-abort zone...
              Abort the zone transaction. All changes are discarded.

       zone-diff zone
              Get zone changes within the transaction.

       zone-get zone [owner [type]]
              Get zone data within the transaction.

       zone-set zone owner [ttl] type rdata
              Add  zone record within the transaction. The first record in a rrset requires a ttl
              value specified.

       zone-unset zone owner [type [rdata]]
              Remove zone data within the transaction.

       zone-purge zone... [filter...]
              Purge zone data, zone file, journal, timers, and/or KASP data of  specified  zones.
              Available  filters  are  +expire,  +zonefile, +journal, +timers, and +kaspdb. If no
              filter is specified, all filters are enabled.  If the zone is no longer configured,
              add  +orphan  filter (zone file cannot be purged in this case). This command always
              requires the force option. (#)

       zone-stats zone [module[.counter]]
              Show zone statistics counter(s). To print also counters with  value  0,  use  force
              option.

       conf-init
              Initialize  the  configuration database. If the database doesn't exist yet, execute
              this command as an intended user to ensure the server is permitted  to  access  the
              database (e.g. sudo -u knot knotc conf-init). (*)

       conf-check
              Check the server configuration. (*)

       conf-import filename
              Import  a  configuration  file  into  the  configuration  database. If the database
              doesn't exist yet, execute this command as an intended user to ensure the server is
              permitted  to  access the database (e.g. sudo -u knot knotc conf-import ...).  Also
              ensure the server is not using the configuration database at the same time! (*)

       conf-export [filename]
              Export the configuration database into a config file or stdout. (*)

       conf-list [item]
              List the configuration database sections or section items.

       conf-read [item]
              Read the item from the active configuration database.

       conf-begin
              Begin a writing configuration database transaction. Only  one  transaction  can  be
              opened at a time.

       conf-commit
              Commit the configuration database transaction.

       conf-abort
              Rollback the configuration database transaction.

       conf-diff [item]
              Get the item difference in the transaction.

       conf-get [item]
              Get the item data from the transaction.

       conf-set item [data...]
              Set the item data in the transaction.

       conf-unset [item] [data...]
              Unset the item data in the transaction.

   Notes
       Empty or -- zone parameter means all zones or all zones with a transaction.

       Use @ owner to denote the zone name.

       Type item parameter in the form of section[[id]][.name].

       (*) indicates a local operation which requires a configuration.

       (#) indicates an optionally blocking operation.

       The -b and -f options can be placed right after the command name.

       Responses returned by knotc commands depend on the mode:

       • In  the  blocking  mode,  knotc  reports  if  an error occurred during processing of the
         command by the server. If an error is reported, a more detailed  information  about  the
         failure can usually be found in the server log.

       • In  the  non-blocking  (default)  mode,  knotc doesn't report processing errors.  The OK
         response to triggering commands means that the command has been successfully sent to the
         server. To verify if the operation succeeded, it's necessary to check the server log.

       Actions  zone-flush,  zone-backup,  and zone-restore are carried out by the knotd process.
       The directory specified must be accessible to the user account that knotd runs  under  and
       if  the  directory  already  exists,  its  permissions  must  be appropriate for that user
       account.

   Interactive mode
       The utility provides interactive mode  with  basic  line  editing  functionality,  command
       completion, and command history.

       Interactive mode behavior can be customized in ~/.editrc. Refer to editrc(5) for details.

       Command history is saved in ~/.knotc_history.

EXIT VALUES

       Exit status of 0 means successful operation. Any other exit status indicates an error.

EXAMPLES

   Reload the whole server configuration
          $ knotc reload

   Flush the example.com and example.org zones
          $ knotc zone-flush example.com example.org

   Get the current server configuration
          $ knotc conf-read server

   Get the list of the current zones
          $ knotc conf-read zone.domain

   Get the primary servers for the example.com zone
          $ knotc conf-read 'zone[example.com].master'

   Add example.org zone with a zonefile location
          $ knotc conf-begin
          $ knotc conf-set 'zone[example.org]'
          $ knotc conf-set 'zone[example.org].file' '/var/zones/example.org.zone'
          $ knotc conf-commit

   Get the SOA record for each configured zone
          $ knotc zone-read -- @ SOA

SEE ALSO

       knotd(8), knot.conf(5), editrc(5).

AUTHOR

       CZ.NIC Labs <https://www.knot-dns.cz>

COPYRIGHT

       Copyright 2010–2022, CZ.NIC, z.s.p.o.