server_socket: bind to '[::1]:6600' failed

[Barabba11]

Hi, I've an Orangepi zero with Armbian 22.08.8 Jammy with Linux 5.15.74-sunxi (also with Debian the same problem), both wifi and ethernet are connected but I can't open there the port 6600 I've installed the latest mpd, when I start it I have server_socket: bind to '[::1]:6600' failed (continuing anyway, because binding to '127.0.0.1:6600' succeeded): Failed to bind socket: Cannot assign requested address

I've tried add it manually without success: iptables -A INPUT -p tcp --dport 6600 -j ACCEPT

Here is verbose:

root@orangepizero:~# mpd --verbose
config_file: loading file /etc/mpd.conf
server_socket: bind to '[::1]:6600' failed (continuing anyway, because binding to '127.0.0.1:6600' succeeded): Failed to bind socket: Cannot assign requested address
path: SetFSCharset: fs charset is
libsamplerate: libsamplerate converter 'Fastest Sinc Interpolator'
vorbis: Xiph.Org libVorbis 1.3.7
opus: libopus 1.3.1
sndfile: libsndfile-1.0.31
adplug: adplug 2.3.3
simple_db: reading DB
curl: version 7.81.0
curl: with GnuTLS/3.7.3

I'd also would report that the kill option doesn't produce desidered results, how can I kill it easly?

root@orangepizero:~# mpd --kill
exception: no pid_file specified in the config file

does it try to use IPv6? But I've disabled it on OS then I've located the /etc/mpd.con and added the line bind_to_address "0.0.0.0"m rebooted the device, but it doesn't change the situation, now I have thsi output:

root@orangepizero:~# mpd
server_socket: bind to '[::1]:6600' failed (continuing anyway, because binding to '127.0.0.1:6600' succeeded): Failed to bind socket: Cannot assign requested address
exception: Failed to bind to '0.0.0.0:6600'; Failed to bind socket: Address already in use
root@orangepizero:~# netstat -tunlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      1/init
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1317/sshd: /usr/sbi
tcp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN      610/systemd-resolve
tcp6       0      0 :::111                  :::*                    LISTEN      1/init
tcp6       0      0 :::22                   :::*                    LISTEN      1317/sshd: /usr/sbi
udp        0      0 0.0.0.0:5353            0.0.0.0:*                           1104/avahi-daemon:
udp        0      0 0.0.0.0:50431           0.0.0.0:*                           1104/avahi-daemon:
udp        0      0 127.0.0.53:53           0.0.0.0:*                           610/systemd-resolve
udp        0      0 127.0.0.1:323           0.0.0.0:*                           1316/chronyd
udp        0      0 0.0.0.0:111             0.0.0.0:*                           1/init
udp6       0      0 :::5353                 :::*                                1104/avahi-daemon:
udp6       0      0 :::46571                :::*                                1104/avahi-daemon:
udp6       0      0 ::1:323                 :::*                                1316/chronyd
udp6       0      0 :::111                  :::*                                1/init
root@orangepizero:~#

Thank you

[dgcampea]

First, you should post your whole mpd.conf file since we can't possibly know its contents.

Second, there's an issue template that you should have used (it's not just bureaucracy, it contains important info for the maintainers).

I've installed the latest mpd, (...)

This is ambiguous. Latest mpd from their repositories I presume? You should paste the output from mpd --version.

I'd also would report that the kill option doesn't produce desidered results, how can I kill it easly?

The manual states that this option is valid when pid_file is set in mpd.conf. The error message already explains this.

does it try to use IPv6? But I've disabled it on OS

This is almost always a mistake. Unless you know what you're doing and have a very good for it, you should leave it enabled.

I'm also a bit lost to what's the actual problem here. Where are you trying to connect mpd from? So far the information you provided tells me that mpd is listening on localhost.

then I've located the /etc/mpd.con and added the line bind_to_address "0.0.0.0"m rebooted the device, but it doesn't change the situation, now I have thsi output:

It doesn't work because the first bind to 127.0.0.1:6600 already succeeded and the next bind_to_address (you can have multiple of these) is for 0.0.0.0:6600 which implies binding again to the previous 127.0.0.1:6600 address. It fails because it's already bound.

[Barabba11]

Hi mate! Thanks for help, here we are: 0.23.5 (0.23.5)

# An example configuration file for MPD.
# Read the user manual for documentation: http://www.musicpd.org/doc/user/
# or /usr/share/doc/mpd/html/user.html

# Files and directories #######################################################
#
# This setting controls the top directory which MPD will search to discover the
# available audio files and add them to the daemon's online database. This
# setting defaults to the XDG directory, otherwise the music directory will be
# be disabled and audio files will only be accepted over ipc socket (using
# file:// protocol) or streaming files over an accepted protocol.
#
music_directory     "/mnt"
#
# This setting sets the MPD internal playlist directory. The purpose of this
# directory is storage for playlists created by MPD. The server will use
# playlist files not created by the server but only if they are in the MPD
# format. This setting defaults to playlist saving being disabled.
#
playlist_directory      "/mnt"
#
# This setting sets the location of the MPD database. This file is used to
# load the database at server start up and store the database while the
# server is not up. This setting defaults to disabled which will allow
# MPD to accept files over ipc socket (using file:// protocol) or streaming
# files over an accepted protocol.
#
db_file         "/var/lib/mpd/tag_cache"

# These settings are the locations for the daemon log files for the daemon.
#
# The special value "syslog" makes MPD use the local syslog daemon. This
# setting defaults to logging to syslog.
# If you use systemd, do not configure a log_file.  With systemd, MPD
# defaults to the systemd journal, which is fine.
#
log_file            "/var/log/mpd/mpd.log"
#
# This setting sets the location of the file which stores the process ID
# for use of mpd --kill and some init scripts. This setting is disabled by
# default and the pid file will not be stored.
# If you use systemd, do not configure a pid_file.
#
#pid_file           "/run/mpd/pid"

# This setting sets the location of the file which contains information about
# most variables to get MPD back into the same general shape it was in before
# it was brought down. This setting is disabled by default and the server
# state will be reset on server start up.
#
state_file          "/var/lib/mpd/state"
#
# The location of the sticker database.  This is a database which
# manages dynamic information attached to songs.
#
sticker_file                   "/var/lib/mpd/sticker.sql"
#
###############################################################################

# General music daemon options ################################################
#
# This setting specifies the user that MPD will run as. MPD should never run as
# root and you may use this setting to make MPD change its user ID after
# initialization. This setting is disabled by default and MPD is run as the
# current user.
#
user                "mpd"
#
# This setting specifies the group that MPD will run as. If not specified
# primary group of user specified with "user" setting will be used (if set).
# This is useful if MPD needs to be a member of group such as "audio" to
# have permission to use sound card.
#
#group              "nogroup"
#
# This setting sets the address for the daemon to listen on. Careful attention
# should be paid if this is assigned to anything other than the default, any.
# This setting can deny access to control of the daemon. Choose any if you want
# to have mpd listen on every address. Not effective if systemd socket
# activation is in use.
#
# For network
bind_to_address         "localhost"
bind_to_address "0.0.0.0"
#
# And for Unix Socket
#bind_to_address        "/run/mpd/socket"
#
# This setting is the TCP port that is desired for the daemon to get assigned
# to.
#
port                "6600"
#
# Suppress all messages below the given threshold.  Use "verbose" for
# troubleshooting. Available setting arguments are "notice", "info", "verbose",
# "warning" and "error".
#
#log_level          "notice"
#
# Setting "restore_paused" to "yes" puts MPD into pause mode instead
# of starting playback after startup.
#
#restore_paused "no"
#
# This setting enables MPD to create playlists in a format usable by other
# music players.
#
#save_absolute_paths_in_playlists   "no"
#
# This setting defines a list of tag types that will be extracted during the
# audio file discovery process. The complete list of possible values can be
# found in the user manual.
#metadata_to_use    "artist,album,title,track,name,genre,date,composer,performer,disc"
#
# This example just enables the "comment" tag without disabling all
# the other supported tags:
#metadata_to_use "+comment"
#
# This setting enables automatic update of MPD's database when files in
# music_directory are changed.
#
auto_update "yes"
#
# Limit the depth of the directories being watched, 0 means only watch
# the music directory itself.  There is no limit by default.
#
#auto_update_depth "3"
#
###############################################################################

# Symbolic link behavior ######################################################
#
# If this setting is set to "yes", MPD will discover audio files by following
# symbolic links outside of the configured music_directory.
#
#follow_outside_symlinks    "yes"
#
# If this setting is set to "yes", MPD will discover audio files by following
# symbolic links inside of the configured music_directory.
#
#follow_inside_symlinks     "yes"
#
###############################################################################

# Zeroconf / Avahi Service Discovery ##########################################
#
# If this setting is set to "yes", service information will be published with
# Zeroconf / Avahi.
#
#zeroconf_enabled       "yes"
#
# The argument to this setting will be the Zeroconf / Avahi unique name for
# this MPD server on the network. %h will be replaced with the hostname.
#
#zeroconf_name          "Music Player @ %h"
#
###############################################################################

# Permissions #################################################################
#
# If this setting is set, MPD will require password authorization. The password
# setting can be specified multiple times for different password profiles.
#
#password                        "password@read,add,control,admin"
#
# This setting specifies the permissions a user has who has not yet logged in.
#
#default_permissions             "read,add,control,admin"
#
###############################################################################

# Database #######################################################################
#
# An example of a database section instead of the old 'db_file' setting.
# It enables mounting other storages into the music directory.
#
#database {
#       plugin "simple"
#       path "/var/lib/mpd/tag_cache"
#       cache_directory "/var/lib/mpd/cache"
#}
#
# An example of database config for a sattelite setup
#
#music_directory "nfs://fileserver.local/srv/mp3"
#database {
#       plugin "proxy"
#       host "other.mpd.host"
#       port "6600"
#}

# Input #######################################################################
#
input {
        plugin "curl"
#       proxy "proxy.isp.com:8080"
#       proxy_user "user"
#       proxy_password "password"
}

# Decoder #####################################################################
#

decoder {
        plugin                  "hybrid_dsd"
        enabled                 "no"
#       gapless                 "no"
}
decoder {
        plugin        "wildmidi"
        enabled       "no"
        #config_file "/etc/timidity/timidity.cfg"
}

#
###############################################################################

# Audio Output ################################################################
#
# MPD supports various audio output types, as well as playing through multiple
# audio outputs at the same time, through multiple audio_output settings
# blocks. Setting this block is optional, though the server will only attempt
# autodetection for one sound card.
#
# An example of an ALSA output:
#
audio_output {
    type        "alsa"
    name        "My ALSA Device"
    device      "hw:0,0"    # optional
    mixer_type      "hardware"  # optional
    mixer_device    "default"   # optional
    mixer_control   "Line Out"      # optional
    mixer_index "0"     # optional
}
#
# An example of an OSS output:
#
#audio_output {
#   type        "oss"
#   name        "My OSS Device"
##  device      "/dev/dsp"  # optional
##  mixer_type      "hardware"  # optional
##  mixer_device    "/dev/mixer"    # optional
##  mixer_control   "PCM"       # optional
#}
#
# An example of a shout output (for streaming to Icecast):
#
#audio_output {
#   type        "shout"
#   encoder     "vorbis"        # optional
#   name        "My Shout Stream"
#   host        "localhost"
#   port        "8000"
#   mount       "/mpd.ogg"
#   password    "hackme"
#   quality     "5.0"
#   bitrate     "128"
#   format      "44100:16:1"
##  protocol    "icecast2"      # optional
##  user        "source"        # optional
##  description "My Stream Description" # optional
##  url     "http://example.com"    # optional
##  genre       "jazz"          # optional
##  public      "no"            # optional
##  timeout     "2"         # optional
##  mixer_type      "software"      # optional
#}
#
# An example of a recorder output:
#
#audio_output {
#   type        "recorder"
#   name        "My recorder"
#   encoder     "vorbis"        # optional, vorbis or lame
#   path        "/var/lib/mpd/recorder/mpd.ogg"
##  quality     "5.0"           # do not define if bitrate is defined
#   bitrate     "128"           # do not define if quality is defined
#   format      "44100:16:1"
#}
#
# An example of a httpd output (built-in HTTP streaming server):
#
#audio_output {
#   type        "httpd"
#   name        "My HTTP Stream"
#   encoder     "vorbis"        # optional, vorbis or lame
#   port        "8000"
#   bind_to_address "0.0.0.0"       # optional, IPv4 or IPv6
##  quality     "5.0"           # do not define if bitrate is defined
#   bitrate     "128"           # do not define if quality is defined
#   format      "44100:16:1"
#   max_clients "0"         # optional 0=no limit
#}
#
# An example of a pulseaudio output (streaming to a remote pulseaudio server)
# Please see README.Debian if you want mpd to play through the pulseaudio
# daemon started as part of your graphical desktop session!
#
#audio_output {
#   type        "pulse"
#   name        "My Pulse Output"
##  server      "remote_server"     # optional
##  sink        "remote_server_sink"    # optional
##  media_role  "media_role"        #optional
#}
#
# An example of a winmm output (Windows multimedia API).
#
#audio_output {
#   type        "winmm"
#   name        "My WinMM output"
##  device      "Digital Audio (S/PDIF) (High Definition Audio Device)" # optional
#       or
##  device      "0"     # optional
##  mixer_type  "hardware"  # optional
#}
#
# An example of an openal output.
#
#audio_output {
#   type        "openal"
#   name        "My OpenAL output"
##  device      "Digital Audio (S/PDIF) (High Definition Audio Device)" # optional
#}
#
# An example of an sndio output.
#
#audio_output {
#   type        "sndio"
#   name        "sndio output"
#   mixer_type  "hardware"
#}
#
# An example of an OS X output:
#
#audio_output {
#   type        "osx"
#   name        "My OS X Device"
##  device      "Built-in Output"   # optional
##  channel_map      "-1,-1,0,1"    # optional
#}
#
## Example "pipe" output:
#
#audio_output {
#   type        "pipe"
#   name        "my pipe"
#   command     "aplay -f cd 2>/dev/null"
## Or if you're want to use AudioCompress
#   command     "AudioCompress -m | aplay -f cd 2>/dev/null"
## Or to send raw PCM stream through PCM:
#   command     "nc example.org 8765"
#   format      "44100:16:2"
#}
#
## An example of a null output (for no audio output):
#
#audio_output {
#   type        "null"
#   name        "My Null Output"
#   mixer_type      "none"          # optional
#}
#
###############################################################################

# Normalization automatic volume adjustments ##################################
#
# This setting specifies the type of ReplayGain to use. This setting can have
# the argument "off", "album", "track" or "auto". "auto" is a special mode that
# chooses between "track" and "album" depending on the current state of
# random playback. If random playback is enabled then "track" mode is used.
# See <https://wiki.hydrogenaud.io/index.php?title=Replaygain> for
# more details about ReplayGain.
# This setting is off by default.
#
#replaygain         "album"
#
# This setting sets the pre-amp used for files that have ReplayGain tags. By
# default this setting is disabled.
#
#replaygain_preamp      "0"
#
# This setting sets the pre-amp used for files that do NOT have ReplayGain tags.
# By default this setting is disabled.
#
#replaygain_missing_preamp  "0"
#
# This setting enables or disables ReplayGain limiting.
# MPD calculates actual amplification based on the ReplayGain tags
# and replaygain_preamp / replaygain_missing_preamp setting.
# If replaygain_limit is enabled MPD will never amplify audio signal
# above its original level. If replaygain_limit is disabled such amplification
# might occur. By default this setting is enabled.
#
#replaygain_limit       "yes"
#
# This setting enables on-the-fly normalization volume adjustment. This will
# result in the volume of all playing audio to be adjusted so the output has
# equal "loudness". This setting is disabled by default.
#
#volume_normalization       "no"
#
###############################################################################

# Character Encoding ##########################################################
#
# If file or directory names do not display correctly for your locale then you
# may need to modify this setting.
#
filesystem_charset      "UTF-8"
#
###############################################################################

I suppose the problem bcomes from the armbian kernel, even if I disabled the IPv6 all programs love to use it instead of IPv4.. to control mpd I would use cyp but also it doesn't want to use IPv4..

root@orangepizero:~/cyp# node .
no passwords.json found
1670083525741 ws2mpd attached to a http server { address: '::', family: 'IPv6', port: 8080 }

What exactly pid_file I have to set in mpd.conf? Can you please explain me what it is? I know that pid is automatically generated by kernel, and if I want to kill something I have to know it by a ps aux and than kill that pid. I just want kill easier, is it possible? How? thank you :)

[MaxKellermann]

I've installed the latest mpd, when I start it I have

0.23.5 (0.23.5)

And this is why I tend to refuse to look at support requests when there isn't a version number. You said you were using the latest MPD, but that was not true. The latest MPD release is 0.23.11, not 0.23.5.

Now if only you had read the help page that was linked in the bug reporting template - you would have seen this section in the troubleshooting chapter: https://mpd.readthedocs.io/en/stable/user.html#error-bind-to-0-0-0-0-6600-failed-continuing-anyway-because-binding-to-6600-succeeded