NAME

       kea-lfc - Lease File Cleanup process in Kea

SYNOPSIS

       kea-lfc  [-4**|-6**]  [-c config-file] [-p pid-file] [-x previous-file] [-i copy-file] [-o
       output-file] [-f finish-file] [-v] [-V] [-W] [-d] [-h]

DESCRIPTION

       The kea-lfc service process removes redundant information from the files used  to  provide
       persistent  storage  for  the memfile database backend. The service is written to run as a
       stand-alone process. While it can be started externally, there is usually no  need  to  do
       this. It is run periodically by the Kea DHCP servers.

ARGUMENTS

       The arguments are as follows:

       -4 | -6
              Indicates the protocol version of the lease files; must be either 4 or 6.

       -c config-file
              Specifies  the  file  with  the  configuration for the kea-lfc process. It may also
              contain configuration entries for other Kea services. Currently kea-lfc gets all of
              its  arguments  from  the command line; in the future it will be extended to obtain
              some arguments from the configuration file.

       -p pid-file
              Specifies the PID file. When the kea-lfc process starts, it attempts  to  determine
              if another instance of the process is already running by examining the PID file. If
              one is already running, the new process is terminated. If one is not  running,  Kea
              writes its PID into the PID file.

       -x previous-file
              Specifies the previous or ex-lease file. When kea-lfc starts, this is the result of
              any previous run of kea-lfc; when kea-lfc finishes, it is the result of  this  run.
              If kea-lfc is interrupted before completing, this file may not exist.

       -i copy-file
              Specifies  the input or copy of lease file. Before the DHCP server invokes kea-lfc,
              it will move the current lease file here and then call kea-lfc with this file.

       -o output-file
              Specifies the output lease file, which is the temporary file kea-lfc should use  to
              write  the  leases.  Once  this file is finished writing, it is moved to the finish
              file (see below).

       -f finish-file
              Specifies the finish or completion file, another temporary file  kea-lfc  uses  for
              bookkeeping.  When  kea-lfc  finishes  writing the output file, it moves it to this
              file name. After kea-lfc finishes deleting the other files (previous and input), it
              moves  this  file  to the previous lease file. By moving the files in this fashion,
              the kea-lfc and the DHCP server processes can determine the  correct  file  to  use
              even if one of the processes was interrupted before completing its task.

       -v     Causes the version stamp to be printed.

       -V     Causes a longer form of the version stamp to be printed.

       -W     Displays the configuration report.

       -d     Sets  the  logging  level  to  debug  with  extra  verbosity. This is primarily for
              development purposes in stand-alone mode.

       -h     Causes the usage string to be printed.

DOCUMENTATION

       Kea comes with an extensive Kea Administrator Reference Manual that covers all aspects  of
       running  the  Kea  software  -  compilation,  installation,  configuration,  configuration
       examples, and much more. Kea also features a Kea Messages Manual, which lists all possible
       messages  Kea  can  print  with  a  brief description for each of them. Both documents are
       available in various formats (.txt, .html,  .pdf)  with  the  Kea  distribution.  The  Kea
       documentation is available at https://kb.isc.org/docs/kea-administrator-reference-manual .

       Kea  source  code  is  documented  in  the  Kea  Developer's  Guide. Its online version is
       available at https://jenkins.isc.org/job/Kea_doc/doxygen/.

       The Kea project website is available at https://kea.isc.org.

MAILING LISTS AND SUPPORT

       There are two public mailing lists available for the Kea project. kea-users (kea-users  at
       lists.isc.org)  is  intended  for  Kea  users, while kea-dev (kea-dev at lists.isc.org) is
       intended for Kea developers, prospective contributors,  and  other  advanced  users.  Both
       lists  are  available at https://lists.isc.org. The community provides best-effort support
       on both of those lists.

       ISC provides professional support  for  Kea  services.  See  https://www.isc.org/kea/  for
       details.

HISTORY

       The kea-lfc process was first coded in January 2015 by the ISC Kea/DHCP team.

SEE ALSO

       kea-dhcp4(8), kea-dhcp6(8), kea-dhcp-ddns(8), kea-ctrl-agent(8), kea-admin(8), keactrl(8),
       perfdhcp(8), kea-netconf(8), Kea Administrator Reference Manual.

AUTHOR

       Internet Systems Consortium

COPYRIGHT

       2020, Internet Systems Consortium