Activation interfaces réseau

Support Aide (fr)
14

De retour : nichts, keinen Nachrichten (rien, pas de nouvelles!).
Mon désir de chercher dans les “rc.d” semble pertinente, bien que cela me soit autant accessible que le chinois traditionnel crypté en AES 128!
Mais j’essaye. Dans :slight_smile:

/etc/rc.d/init.d/network-up

#! /bin/bash

BEGIN INIT INFO

Provides: $network $named

Should-Start: portreserve NetworkManager

Default-Start: 2 3 4 5

Short-Description: Wait for the hotplugged network to be up

Description: Wait for all network interfaces started asynchronously

at boot time.

END INIT INFO

Source function library.

. /etc/init.d/functions

NETWORKDELAY=20
DEFAULT_LINK_DETECTION_DELAY=2
MIN_LINK_DETECTION_DELAY=0
MAX_LINK_DETECTION_DELAY=$MIN_LINK_DETECTION_DELAY
ELAPSED_TIME=0
RESOLVCONF_FLAGFILE=/var/run/resolvconf/enable-updates
RESOLVCONF_DIR=/var/run/resolvconf/interface

source network configuration/etc/rc.d/init.d/network-up

. /etc/sysconfig/network

Check that networking is up.

[ “${NETWORKING}” = “no” ] && exit 0
cd /etc/sysconfig/network-scripts

. network-functions

find all the interfaces besides loopback.

ignore aliases, alternative configurations, and editor backup files

interfaces=$(/bin/ls ifcfg* |
LC_ALL=C sed -e “$__sed_discard_ignored_files”
-e ‘/(ifcfg-lo$|:|ifcfg-.*-range)/d’
-e ‘/ifcfg-[ A-Za-z0-9#._-]+$/ { s/^ifcfg-//g;s/[0-9]/ &/}’ |
LC_ALL=C grep -v ‘^ifcfg-’ |
LC_ALL=C sort -k 1,1 -k 2n |
LC_ALL=C sed -e ‘s/ ([0-9])/\1/’)

may_have_link() {
local DEVICE=$1
local LINKDELAY=0
! check_link_down ${DEVICE} || is_associating ${DEVICE}
}

is_associating() {
local DEVICE=$1
is_wireless_device ${DEVICE} || return 1
local AP=iwgetid -a -r ${DEVICE} 2>/dev/null
[ -n “$AP” ] && [ “$AP” != “00:00:00:00:00:00” ] && [ “$AP” != “44:44:44:44:44:44” ] && [ “$AP” != “FF:FF:FF:FF:FF:FF” ]
}

should_wait_network() {
for i in $interfaces; do
unset DEVICE TYPE BOOTPROTO MII_NOT_SUPPORTED PEERDNS DNS1 DNS2
unset REALDEVICE PARENTDEVICE NM_CONTROLLED
LINK_DETECTION_DELAY=$DEFAULT_LINK_DETECTION_DELAY
eval $(LANG=C grep -F “DEVICE=” “ifcfg-$i”)
eval $(LANG=C grep -F “REALDEVICE=” “ifcfg-$i”)
eval $(LANG=C grep -F “PARENTDEVICE=” “ifcfg-$i”)
eval $(LANG=C grep -F “TYPE=” “ifcfg-$i”)
eval $(LANG=C grep -F “BOOTPROTO=” “ifcfg-$i”)
eval $(LANG=C grep -F “MII_NOT_SUPPORTED=” “ifcfg-$i”)
eval $(LANG=C grep -F “LINK_DETECTION_DELAY=” “ifcfg-$i”)
eval $(LANG=C grep -F “PEERDNS=” “ifcfg-$i”)
eval $(LANG=C grep -F “DNS1=” “ifcfg-$i”)
eval $(LANG=C grep -F “DNS2=” “ifcfg-$i”)
eval $(LANG=C grep -F “NM_CONTROLLED=” “ifcfg-$i”)
[ -z “$REALDEVICE” -a -n “$PARENTDEVICE” ] && REALDEVICE=$PARENTDEVICE
[ -z “$REALDEVICE” ] && REALDEVICE=${DEVICE%%:*}
if [ $LINK_DETECTION_DELAY -lt $MIN_LINK_DETECTION_DELAY ]; then
LINK_DETECTION_DELAY=$MIN_LINK_DETECTION_DELAY
fi

    if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi
    if [ "$BOOTPROTO" != "static" ] \
        && [ "$BOOTPROTO" != "dhcp" ] \
        && [ "$BOOTPROTO" != "bootp" ]; then
        continue
    fi

    # Ignore Wifi network files created by NetworkManager
    if [ "$TYPE" = "Wireless" ]; then
      continue
    fi

    # only check interfaces using ifplug, other interfaces are
    # started synchronously from the network service
    if [ "$MII_NOT_SUPPORTED" = "yes" ]; then
        continue
    fi

    # only check interfaces automatically launched
    if LANG=C grep -q -E "^ONBOOT=['\"]?[Nn][Oo]['\"]?" "ifcfg-$i"; then
        continue
    fi

    # ignore devices that are not present
    ip -o link show ${DEVICE} &>/dev/null || continue

    ! is_false $NM_CONTROLLED && is_nm_running && _use_nm=true
    # for NM controlled just ask NetworkManager
    if [ "$_use_nm" = "true" ]; then
        # Ignore disabled wifi h/w
        if is_nm_device_unavailable ${DEVICE}; then
            # Question: Is NM cleverer than us here? Does it do this delay
            # internally and mark it as disconnected until it knows better?

            # before configured delay, consider a lack of link beat
            # as not ready, and unplugged thereafter
            if [ $ELAPSED_TIME -lt $LINK_DETECTION_DELAY ]; then
                return 0
            fi
            # no need to wait for unplugged devices to come up/etc/rc.d/init.d/network-up  
            continue
        fi

        is_nm_active ${DEVICE} || return 0

        # The resolvconf check below uses a single generic "NetworkManager"
        # DNS file, rather than device specific ones, so fudge the device.
        DEVICE=NetworkManager
    else
        # check link beat
        if ! may_have_link ${DEVICE}; then
            # before configured delay, consider a lack of link beat
            # as not ready, and unplugged thereafter
            if [ $ELAPSED_TIME -lt $LINK_DETECTION_DELAY ]; then
                return 0
            fi
            # no need to wait for unplugged devices to come up
            continue
        fi

        # check address is set
        ADDR=`ip addr show scope global ${DEVICE} | awk '/inet/ {print $2;}'`
        if [ -z "$ADDR" ]; then
            return 0
        fi
    fi

    # wait for changes to be propagated by resolvconf if needed
    if [ -e $RESOLVCONF_FLAGFILE ]; then
        if [ "$BOOTPROTO" = "dhcp" -a "$PEERDNS" != "no" ] \
            || [ -n "$DNS1" -o -n "$DNS2" ]; then
            if [ ! -e $RESOLVCONF_DIR/$DEVICE ]; then
                return 0
            fi
            if [ $RESOLVCONF_DIR/$DEVICE -nt /etc/resolv.conf ]; then
                return 0
            fi
        fi
    fi
done
# all interfaces are ready
return 1

}

case “$1” in
start)
gprintf “Waiting for network to be up”

for i in $interfaces; do
    LINK_DETECTION_DEL/etc/rc.d/init.d/network-up  AY=$DEFAULT_LINK_DETECTION_DELAY
    eval $(LANG=C grep -F "LINK_DETECTION_DELAY=" "ifcfg-$i")
    if [ "$LINK_DETECTION_DELAY" -gt $MAX_LINK_DETECTION_DELAY ]; then
        MAX_LINK_DETECTION_DELAY=$LINK_DETECTION_DELAY
    fi
done
NETWORKDELAY=$(( NETWORKDELAY + MAX_LINK_DETECTION_DELAY ))

while should_wait_network && [ $ELAPSED_TIME -lt $NETWORKDELAY ]; do
    sleep 1
    let ELAPSED_TIME=$ELAPSED_TIME+1
done
[ $ELAPSED_TIME -ge $NETWORKDELAY ] && failure || success
echo
;;

stop)
;;
*)
gprintf “Usage: %s\n” “$(basename $0) {start|stop}”
exit 1
esac

exit 0

Nous sommes (peut-être) proches du but; mais comme tout cela est très limpide, je suis embarrassé par cette trop grande limpidité.
Dans /etc/rc.d, init.d me semble être le plus utile.