SOLVED: Jellyfin Service Fails to Start (but Server Still Works)

[Zeanoth]

You shouldn't modify the service.  You shouldn't HAVE to change anything with the service file or the environment variables file.  I strongly recommend you don't modify it further.  It seems like you or something else changed it.

Show me the contents of /usr/lib/systemd/system/jellyfin.service and /etc/default/jellyfin.

jellyfin.service should look like

Code:

[Unit]
Description = Jellyfin Media Server
After = network-online.target

[Service]
Type = simple
EnvironmentFile = /etc/default/jellyfin
User = jellyfin
Group = jellyfin
WorkingDirectory = /var/lib/jellyfin
ExecStart = /usr/bin/jellyfin $JELLYFIN_WEB_OPT $JELLYFIN_FFMPEG_OPT $JELLYFIN_SERVICE_OPT $JELLYFIN_NOWEBAPP_OPT $JELLYFIN_ADDITIONAL_OPTS
Restart = on-failure
TimeoutSec = 15
SuccessExitStatus=0 143

[Install]
WantedBy = multi-user.target

/etc/default/jellyfin should look like

Code:

# Jellyfin default configuration options
# This is a POSIX shell fragment

# Use this file to override the default configurations; add additional
# options with JELLYFIN_ADD_OPTS.

# Under systemd, use
#  /etc/systemd/system/jellyfin.service.d/jellyfin.service.conf
# to override the user or this config file's location.

#
# General options
#

# Program directories
JELLYFIN_DATA_DIR="/var/lib/jellyfin"
JELLYFIN_CONFIG_DIR="/etc/jellyfin"
JELLYFIN_LOG_DIR="/var/log/jellyfin"
JELLYFIN_CACHE_DIR="/var/cache/jellyfin"

# temporary directory path; used to construct paths for short-lived temporary files
# the old default was $JELLYFIN_CACHE_DIR/temp; use that to restore previous behaviour,
# though it will have an additional jellyfin/ subdir appended
# otherwise, leave this commented
#TMPDIR="/tmp"

# web client path, installed by the jellyfin-web package
JELLYFIN_WEB_OPT="--webdir=/usr/share/jellyfin/web"

# ffmpeg binary paths, overriding the system values
JELLYFIN_FFMPEG_OPT="--ffmpeg=/usr/lib/jellyfin-ffmpeg/ffmpeg"

# Disable glibc dynamic heap adjustment
MALLOC_TRIM_THRESHOLD_=131072

# [OPTIONAL] run Jellyfin as a headless service
#JELLYFIN_SERVICE_OPT="--service"

# [OPTIONAL] run Jellyfin without the web app
#JELLYFIN_NOWEBAPP_OPT="--nowebclient"

# Space to add additional command line options to jellyfin (for help see ~$ jellyfin --help)
JELLYFIN_ADDITIONAL_OPTS=""

# [OPTIONAL] run Jellyfin with ASP.NET Server Garbage Collection (uses more RAM and less CPU than Workstation GC)
# 0 = Workstation
# 1 = Server
#COMPlus_gcServer=1

#
# SysV init/Upstart options
#
# Note: These options are ignored by systemd; use /etc/systemd/system/jellyfin.d overrides instead.
#

# Application username
JELLYFIN_USER="jellyfin"
# Full application command
JELLYFIN_ARGS="$JELLYFIN_WEB_OPT $JELLYFIN_FFMPEG_OPT $JELLYFIN_SERVICE_OPT $JELLYFIN_NOWEBAPP_OPT $JELLFIN_ADDITIONAL_OPTS --datadir $JELLYFIN_DATA_DIR --configdir $JELLYFIN_CONFIG_DIR --logdir $JELLYFIN_LOG_DIR --cachedir $JELLYFIN_CACHE_DIR"

Here's the service config:

Code:

[Unit]
Description = Jellyfin Media Server
After = network-online.target

[Service]
Type = simple
EnvironmentFile = /etc/default/jellyfin
User = jellyfin
Group = jellyfin
WorkingDirectory = /var/lib/jellyfin
ExecStart = /usr/bin/jellyfin $JELLYFIN_WEB_OPT $JELLYFIN_FFMPEG_OPT $JELLYFIN_SERVICE_OPT $JELLYFIN_NOWEBAPP_OPT $JELLYFIN_ADDITIONAL_OPTS
Restart = on-failure
TimeoutSec = 15
SuccessExitStatus=0 143

[Install]
WantedBy = multi-user.target

and here's the /etc/default/jellyfin config:

Code:

# Jellyfin default configuration options
# This is a POSIX shell fragment

# Use this file to override the default configurations; add additional
# options with JELLYFIN_ADD_OPTS.

# Under systemd, use
#  /etc/systemd/system/jellyfin.service.d/jellyfin.service.conf
# to override the user or this config file's location.

#
# General options
#

# Program directories
JELLYFIN_DATA_DIR="/var/lib/jellyfin"
JELLYFIN_CONFIG_DIR="/etc/jellyfin"
JELLYFIN_LOG_DIR="/var/log/jellyfin"
JELLYFIN_CACHE_DIR="/var/cache/jellyfin"

# temporary directory path; used to construct paths for short-lived temporary files
# the old default was $JELLYFIN_CACHE_DIR/temp; use that to restore previous behaviour,
# though it will have an additional jellyfin/ subdir appended
# otherwise, leave this commented
#TMPDIR="/tmp"

# web client path, installed by the jellyfin-web package
JELLYFIN_WEB_OPT="--webdir=/usr/share/jellyfin/web"

# ffmpeg binary paths, overriding the system values
JELLYFIN_FFMPEG_OPT="--ffmpeg=/usr/lib/jellyfin-ffmpeg/ffmpeg"

# Disable glibc dynamic heap adjustment
MALLOC_TRIM_THRESHOLD_=131072

# [OPTIONAL] run Jellyfin as a headless service
#JELLYFIN_SERVICE_OPT="--service"

# [OPTIONAL] run Jellyfin without the web app
#JELLYFIN_NOWEBAPP_OPT="--nowebclient"

# Space to add additional command line options to jellyfin (for help see ~$ jellyfin --help)
JELLYFIN_ADDITIONAL_OPTS=""

# [OPTIONAL] run Jellyfin with ASP.NET Server Garbage Collection (uses more RAM and less CPU than Workstation GC)
# 0 = Workstation
# 1 = Server
#COMPlus_gcServer=1

#
# SysV init/Upstart options
#
# Note: These options are ignored by systemd; use /etc/systemd/system/jellyfin.d overrides instead.
#

# Application username
JELLYFIN_USER="jellyfin"
# Full application command
JELLYFIN_ARGS="$JELLYFIN_WEB_OPT $JELLYFIN_FFMPEG_OPT $JELLYFIN_SERVICE_OPT $JELLYFIN_NOWEBAPP_OPT $JELLFIN_ADDITIONAL_OPTS --datadir $JELLYFIN_DATA_DIR --configdir $JELLYFIN_CONFIG_DIR --logdir $JELLYFIN_LOG_DIR --cachedir $JELLYFIN_CACHE_DIR"

I haven't modified this config, all of the other options that are commented out were like that from install, as far as I know