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kea-lfc(8)

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 data base
   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
   will be run on a periodic basis by the Kea DHCP servers.

ARGUMENTS

   The arguments are as follows:

   -d
       Verbose mode sets the logging level to debug. This is primarily for
       development purposes in stand-alone mode.

   -v
       version causes the version stamp to be printed.

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

   -W
       Display the configuration report.

   -h
       Help causes the usage string to be printed.

   -4 | -6
       The protocol version of the lease files, must be one of 4 or 6.

   -c
       Configuration file including the configuration for 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 get some arguments from the
       config file.

   -p
       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 isn't running it writes its pid into the pid
       file.

   -x
       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
       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 lease file - The temporary file kea-lfc should use to write
       the leases. Upon completion of writing this this file it will be
       moved to the finish file (see below).

   -f
       Finish or completion file - Another temporary file kea-lfc uses for
       bookkeeping. When kea-lfc completes 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 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.

DOCUMENTATION

   Kea comes with an extensive Kea User's Guide documentation that covers
   all aspects of running the Kea software - compilation, installation,
   configuration, configuration examples and many 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 typically
   available in various formats (txt, html, pdf) with your Kea
   distribution. The on-line version is available at
   http://kea.isc.org/docs/.

   Kea source code is documented in the Kea Developer's Guide. It's
   on-line version is available at http://kea.isc.org. Please follow
   Developer's Guide link.

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

MAILING LISTS AND SUPPORT

   There are two mailing lists available for 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
   http://lists.isc.org. The community provides best effort type of
   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-admin(8), keactrl(8),
   perfdhcp(8), Kea Administrator's Guide.

AUTHOR

   The Kea software has been written by a number of engineers working for
   ISC: Tomek Mrugalski, Stephen Morris, Marcin Siodelski, Thomas
   Markwalder, Francis Dupont, Jeremy C. Reed, Wlodek Wencel and Shawn
   Routhier. That list is roughly in the chronological order in which the
   authors made their first contribution. For a complete list of authors
   and contributors, see AUTHORS file.

COPYRIGHT

   Copyright  2015 Internet Systems Consortium, Inc. ("ISC")



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