Provided by: dovecot-core_2.3.2.1-1ubuntu3_amd64 bug

NAME

       doveadm-director - Manage Dovecot directors

SYNOPSIS

       doveadm [-Dv] [-f formatter] director command [OPTIONS] [ARGUMENTS]

DESCRIPTION

       doveadm  director  can  be used to manage and query the status of the list of backend mail
       servers where Dovecot proxy can redirect connections to.

OPTIONS

       Global doveadm(1) options:

       -D     Enables verbosity and debug messages.

       -f formatter
              Specifies the formatter for formatting the output.  Supported formatters are:

              flow   prints each line with key=value pairs.

              pager  prints each key: value pair on its own line and separates records with  form
                     feed character (^L).

              tab    prints a table header followed by tab separated value lines.

              table  prints a table header followed by adjusted value lines.

       -o setting=value
              Overrides  the  configuration  setting  from /etc/dovecot/dovecot.conf and from the
              userdb with the given value.  In order to override multiple settings, the -o option
              may be specified multiple times.

       -v     Enables verbosity, including progress counter.

       Command specific options:

       -a director_socket_path
              This  option  is  used  to specify an alternative socket.  The option's argument is
              either an absolute path to a local UNIX domain  socket,  or  a  hostname  and  port
              (hostname:port), in order to connect a remote host via a TCP socket.

              By  default  doveadm(1)  will  use the socket /var/run/dovecot/director-admin.  The
              socket may be located in another directory, when the default base_dir  setting  was
              overridden in /etc/dovecot/dovecot.conf.

ARGUMENTS

       host   A mail server's hostname or IP address.

       ip     A director's IP address.

       port   The  TCP  port,  on  which  the  director server is listening for connections.  The
              default port is the same as what the local director is listening in.

       user   Is a user's login name.  Depending on the configuration, a login name  may  be  for
              example jane or john@example.com.

       vhost_count
              The  number  of  "virtual hosts" to assign to this server. The higher the number is
              relative to other servers, the more connections it gets. The default is 100.

COMMANDS

   director add
       doveadm director add [-a director_socket_path] host [vhost_count]

       The command's tasks are:

       *   assign a new mail server to the director.

       *   increase/decrease the vhost_count of an already assigned server.

   director dump
       doveadm director dump [-a director_socket_path]

       Dump the current host configuration as doveadm commands. These commands can be easily  run
       after a full director cluster restart to get back to the dumped state.

   director flush
       doveadm director flush [-a director_socket_path] [-f] [--max-parallel n] host|all

       doveadm  director  flush  removes  all user associations either from the given host or all
       hosts. All the existing connections will be kicked. If director_flush_socket is specified,
       a flush script is also automatically executed.

       Because  the  kicking  and moving of users to new backends creates a temporary load spike,
       all the users aren´t moved at once. The --max-parallel parameter specifies how many  users
       can be moved concurrently.  The default is 100.

       If  -f  parameter  is used, the user associations are simply dropped. Existing connections
       won´t be kicked and flush scripts aren´t run.

   director kick
       doveadm director kick [-a director_socket_path] user

       Kick the specified user from the entire Dovecot cluster.  This is similar to doveadm proxy
       kick, but this command needs to be run only once instead of in each director server.

   director map
       doveadm director map [-a director_socket_path] [-f users_file] [-h|-u] [host]

       The  command  doveadm director map is used to list current userhost mappings. Note that
       the director works using 32bit hashes which makes collisions quite likely, so this command
       can't reliably list exactly which users have recently logged in.

       -f users_file
              Path  to  a  file  containing  all user names (one per line).  When given no userdb
              lookup will be performed.  This may be a helpful alternative when for  example  the
              network connection to the LDAP or SQL server is slow.

       -h     Output all usernames, which match the given hash.

       -u     Output hash for the given username.

       host   Specify a server's IP address or hostname, to list only mappings of the given host.

   director move
       doveadm director move [-a director_socket_path] user host

       Move  the  user  to  the specified backend host.  If the user has any existing connections
       they will be killed.

   director remove
       doveadm director remove [-a director_socket_path] host

       Use this command in order to remove the given host from the director.

   director ring add
       doveadm director ring add [-a director_socket_path] ip [port]

       Add a new director to the ring.

   director ring remove
       doveadm director ring remove [-a director_socket_path] ip [port]

       Remove a director from the ring.

   director ring status
       doveadm director ring status [-a director_socket_path]

       Show the status of all the directors currently in the ring.

   director status
       doveadm director status [-a director_socket_path] [user]

       This command is used to show the current usage of all assigned mail servers.
       When a user name is given, this command shows which server the user is currently  assigned
       to,  where  the  user will be assigned after the current saved assignment gets removed and
       where the user would be assigned to if the whole proxy cluster was restarted fresh.

FILES

       /etc/dovecot/dovecot.conf
              Dovecot's main configuration file.

       /etc/dovecot/conf.d/10-director.conf
              Director specific settings.

EXAMPLE

       Add a director with vhost count 150 (or change existing one's vhost count to 150):

       doveadm -v director add x1357.imap.ha.example.net 150
       2001:db8:543:6861:143::1357: OK

       Remove a director:

       doveadm director remove x1357.imap.ha.example.net

       Query the status of mail hosts in a director:

       doveadm director status
       mail server ip       vhosts  users
       192.168.10.1            100    125
       192.168.10.2            100    144
       192.168.10.3            100    115

       Query the status of a user's assignment:

       doveadm director status user@example.com
       Current: 192.168.10.1 (expires 2010-06-18 20:17:04)
       Hashed: 192.168.10.2
       Initial config: 192.168.10.3

       This means that the user is currently assigned to mail server on  IP  192.168.10.1.  After
       all  of  user's  connections have logged out, the assignment will be removed (currently it
       looks like at 20:17:04, but that may be increased). After the assignment has expired,  the
       user  will  next  time  be  redirected  to  192.168.10.2  (assuming no changes to director
       settings). If the entire Dovecot proxy cluster was restarted, so that all of the  director
       configuration  would  revert  back  to its initial values, the user would be redirected to
       192.168.10.3.

REPORTING BUGS

       Report   bugs,   including   doveconf   -n   output,   to   the   Dovecot   Mailing   List
       <dovecot@dovecot.org>.     Information    about    reporting   bugs   is   available   at:
       http://dovecot.org/bugreport.html

SEE ALSO

       doveadm(1)