Waiting for network configuration en el arranque de Ubuntu | Algo de Linux

miércoles, 6 de julio de 2016

Waiting for network configuration en el arranque de Ubuntu

El problema "Waiting for network configuration" en el arranque de Ubuntu es bastante común y puede ser debido a varias causas. 

En algunos de mis equipos de Infolab me está sucediendo este problema y, como consecuencia, el arranque se demora demasiado.

El fichero /etc/init/rc-sysinit.conf controla la ejecución de los scripts añadidos manualmente o mediante update-rc.d a los tradicionales runlevels en /etc/rc*.
He modificado en este fichero la línea que dice:
# start on (filesystem and static-network-up) or failsafe-boot
Por
start on (filesystem and net-device-up) or failsafe-boot

/etc/init/rc-sysinit.conf
# rc-sysinit - System V initialisation compatibility
#
# This task runs the old System V-style system initialisation scripts,
# and enters the default runlevel when finished.

description "System V initialisation compatibility"
author  "Scott James Remnant "

# start on (filesystem and static-network-up) or failsafe-boot
start on (filesystem and net-device-up) or failsafe-boot
stop on runlevel

# Default runlevel, this may be overriden on the kernel command-line
# or by faking an old /etc/inittab entry
env DEFAULT_RUNLEVEL=2

emits runlevel

# There can be no previous runlevel here, but there might be old
# information in /var/run/utmp that we pick up, and we don't want
# that.
#
# These override that
env RUNLEVEL=
env PREVLEVEL=

console output
env INIT_VERBOSE

task

script
    # Check for default runlevel in /etc/inittab
    if [ -r /etc/inittab ]
    then
 eval "$(sed -nre 's/^[^#][^:]*:([0-6sS]):initdefault:.*/DEFAULT_RUNLEVEL="\1";/p' /etc/inittab || true)"
    fi

    # Check kernel command-line for typical arguments
    for ARG in $(cat /proc/cmdline)
    do
 case "${ARG}" in
 -b|emergency)
     # Emergency shell
     [ -n "${FROM_SINGLE_USER_MODE}" ] || sulogin
     ;;
 [0123456sS])
     # Override runlevel
     DEFAULT_RUNLEVEL="${ARG}"
     ;;
 -s|single)
     # Single user mode
     [ -n "${FROM_SINGLE_USER_MODE}" ] || DEFAULT_RUNLEVEL=S
     ;;
 esac
    done

    # Run the system initialisation scripts
    [ -n "${FROM_SINGLE_USER_MODE}" ] || /etc/init.d/rcS

    # Switch into the default runlevel
    telinit "${DEFAULT_RUNLEVEL}"
end script
Publicado por primera vez en http://enavas.blogspot.com.es