mfsmetalogger.cfg(5)

📦
version 4.59.2 · 6 versions
, in arch rolling, nixos 26.05, nixpkgs unstable, ubuntu stonking

🌸 mfsmetalogger.cfg — bestie edition 🌸

okay so this is mfsmetalogger.cfg(5), and yeah, it's part of MooseFS, and it's literally the glow-up guide for your mfsmetalogger config file. sit down, get comfy, we're doing this together 💖

✨ NAME ✨

mfsmetalogger.cfg — the configuration file for mfsmetalogger. that's it, that's the girl 🎀

💅 DESCRIPTION 💅

The file mfsmetalogger.cfg contains configuration of MooseFS metalogger process. she's the blueprint, the whole vibe, the it-girl of metalogger settings 👑

🦋 SYNTAX 🦋

the whole format is giving simple and iconic, no cap:

OPTION = VALUE

and listen — lines starting with # character are ignored as comments. so go off, annotate your life, we support it 🙈

🌈 STARTUP OPTIONS 🌈

real talk: changes in this section require process restart. like, a whole restart. she needs a nap and a fresh start 😴
  • WORKING_USER — user to run daemon as
  • WORKING_GROUP — group to run daemon as (optional - if empty then default user group will be used)
  • SYSLOG_IDENT — name of process to place in syslog messages (default is mfsmetalogger)
  • LOCK_MEMORY — whether to perform mlockall() to avoid swapping out mfsmetalogger process (default is 0, i.e. no)
  • LIMIT_GLIBC_MALLOC_ARENAS — limit malloc arenas to given value - prevents server from using huge amount of virtual memory (Linux only, default is 4)
  • DISABLE_OOM_KILLER — disable out of memory killer (Linux only, default is 1)
  • NICE_LEVEL — nice level to run daemon with (default is -19 if possible; note: process must be started as root to increase priority)
  • FILE_UMASK — set default umask for group and others; user has always 0; default is 027 - block write for group and block all for others
  • DATA_PATH — where to store metadata files. the home address of all your lore 📁

⭐ RUNTIME OPTIONS ⭐

good news bestie: changes in this section require only process reload. glow-up without the shutdown 💫
  • BACK_LOGS — number of metadata change log files (default is 50)
  • BACK_META_KEEP_PREVIOUS — number of previous metadata files to be kept (default is 3)
  • META_DOWNLOAD_FREQ — metadata download frequency in hours (default is 24, at most BACK_LOGS/2)
  • SYSLOG_MIN_LEVEL — minimum level of messages that will be reported by matalogger; levels in order of importance: ERROR, WARNING, NOTICE, INFO, DEBUG (default is INFO)
  • SYSLOG_ELEVATE_TO — reported messages of level lower than set by this option will be elevated to this level (i.e. if SYSLOG_MIN_LEVEL is set to DEBUG and SYSLOG_ELEVATE_TO is set to NOTICE, all INFO and DEBUG messages will be sent to syslog as NOTICE ; default is NOTICE) — it's giving "give that message a promotion" fr fr 📈

🧚 MASTER CONNECTION OPTIONS 🧚

also just a reload for these, we're chill like that 🫶
  • MASTER_RECONNECTION_DELAY — delay in seconds before trying to reconnect to master after disconnection (default is 5)
  • BIND_HOST — local address to use for master connections; default is *, i.e. default local address
  • MASTER_HOST — address of MooseFS master host to connect with (default is mfsmaster)
  • MASTER_PORT — number of MooseFS master port to connect with (default is 9419)
  • MASTER_TIMEOUT — timeout (in seconds) for master connections (default is 10)

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 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 this program; if not, see <https://www.gnu.org/licenses/>.

like, the licensing ate and left no crumbs 💜 (version 2 only, she said what she said)

🔥 SEE ALSO 🔥

and that's the whole page, bestie — you're officially certified 💅 stay iconic, and remember: this gem is MooseFS 4.59.2-1, dated May 2026. mwah, love you, bye 🎀💖✨

📦 where this page comes from