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mfssupervisor(8) This is part of MooseFS mfssupervisor(8) NAME mfssupervisor - tool for controlling the work of MooseFS master process SYNOPSIS mfssupervisor [-xdfrc] [-l new leader ip] [-s mode] [-B local address] [-H master host name] [-P master supervising port] mfssupervisor -v mfssupervisor -h DESCRIPTION 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). OPTIONS -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 inconsis- tencies are present, they will be reported via syslog -s force metadata store or (pro only) metadata check on given mas- ter group (pro version requires specifying a mode, possible val- ues: 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: mfsmas- ter) -P use given port to connect to your master server(s) (default: 9419) NOTES 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 automati- cally. REPORTING BUGS Report bugs to <bugs@moosefs.com>. COPYRIGHT Copyright (C) 2026 Jakub Kruszona-Zawadzki, Saglabs SA This file is part of MooseFS. MooseFS is free software; you can redistribute it and/or modify it un- der 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 this program; if not, see <https://www.gnu.org/licenses/>. SEE ALSO mfsmaster(8) MooseFS 4.59.1-1 May 2026 mfssupervisor(8)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | NOTES | REPORTING BUGS | COPYRIGHT | SEE ALSO
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