mfssupervisor - tool for controlling the work of MooseFS master process

       Copyright (C) 2025 Jakub Kruszona-Zawadzki, Saglabs SA

       This file is part of MooseFS.

       MooseFS  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, version 2 (only).

       MooseFS 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 MooseFS; if  not,  write  to
       the  Free  Software  Foundation,  Inc.,  51 Franklin St, Fifth Floor, Boston, MA 02111-1301, USA or visit
       http://www.gnu.org/licenses/gpl-2.0.html

mfssupervisor is the supervisor program of MooseFS. It can be used to force certain  actions  of  MooseFS
       master(s), like saving metadata or changing leadership. When no action (options -r, -l or -s) is defined,
       the tool will just display info about the master(s) current state(s).

       mfssupervisor - tool for controlling the work of MooseFS master process

       Options -s,-r and -l are mutually exclusive

       Option -f can be used only with option -r

       Option -d can be used only with option -r or -l

       Option  -f  shouldn't be used unless it is necessary in situations when not all master servers defined in
       DNS are connected (i.e. after a crash when one of the master machines  is  offline).  In  an  environment
       where all master machines are present, the leader should be picked automatically.

-v     print version information and exit

       -h     print usage information and exit

       -x     produce more verbose output

       -d     (pro only) dry run (print info, but do not change anything)

       -f     (pro only) force electing not synchronized follower; see NOTES

       -r     (pro  only)  try  to resolve the master states situation; usually selects one of the followers and
              sets its state to ELECT if no elects or leaders are present

       -l     (pro only) try to change the role of the master with given IP to leader;

       -c     (pro only) run configuration consistency check; if any inconsistencies are present, they  will  be
              reported via syslog

       -s     force  metadata  store  or  (pro  only) metadata check on given master group (pro version requires
              specifying a mode, possible values: L - LEADER only, F - FOLLOWERS only, A - all servers with  CRC
              check, C - all servers CRC check only, no metadata is stored on disk)

       -B     local address to use for master connections (default: *, i.e. default local address)

       -H     use given host to find your master server(s) (default: mfsmaster)

       -P     use given port to connect to your master server(s) (default: 9419)

       Report bugs to <bugs@moosefs.com>.

mfsmaster(8)

MooseFS 4.57.5-1                                  February 2025                                 mfssupervisor(8)

mfssupervisor  [-xdfrc]  [-lnewleaderip] [-smode] [-Blocaladdress] [-Hmasterhostname] [-Pmastersupervisingport]

       mfssupervisor-vmfssupervisor-h