NAME

       ctdb-etcd - CTDB etcd integration

SYNOPSIS

       ctdb_etcd_lock

DESCRIPTION

       ctdb_etcd_lock is intended to be run as a mutex helper for CTDB. It will try to connect to
       an existing etcd cluster and grab a lock in that cluster to function as CTDB's cluster
       lock. Please see ctdb/doc/cluster_mutex_helper.txt for details on the mutex helper API. To
       use this, include the following line in the [cluster] section of ctdb.conf(5):

           cluster lock = !/usr/libexec/ctdb/ctdb_etcd_lock

       You can also pass "-v", "-vv", or "-vvv" to include verbose output in the CTDB log.
       Additional "v"s indicate increases in verbosity.

       This mutex helper expects the system Python interpreter to have access to the etcd Python
       module. It also expects an etcd cluster to be configured and running. To integrate with
       this, there is an optional config file of the following format:

           key = value

       The following configuration parameters (and their defaults) are defined for use by
       ctdb_etcd_lock:

           port      = 2379   # connecting port for the etcd cluster
           lock_ttl  = 9      # seconds for TTL
           refresh   = 2      # seconds between attempts to maintain lock
           locks_dir = _ctdb  # where to store CTDB locks in etcd
                              # The final etcd directory for any given lock looks like:
                              #   /_locks/{locks_dir}/{netbios name}/

       In addition, any keyword parameter that can be used to configure an etcd client may be
       specified and modified here. For more documentation on these parameters, see here:
       https://github.com/jplana/python-etcd/

SEE ALSO

       ctdb(7), ctdbd(1), http://ctdb.samba.org/

AUTHOR

       This documentation was written by Jose A. Rivera

COPYRIGHT

       Copyright © 2016 Jose A. Rivera

       This program is free software; you can redistribute it and/or modify it under the terms of
       the GNU General Public License as published by the Free Software Foundation; either
       version 3 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program;
       if not, see http://www.gnu.org/licenses.