diskimage-builder/diskimage_builder/elements/dhcp-all-interfaces/install.d/dhcp-all-interfaces.sh
Lenny Verkhovsky f249cec9f3 Checking link status according to DIB_DHCP_TIMEOUT
In slow networks like Infiniband it takes much time for the
interface to get the carrier. This patch enables this service
to run more then 20 seconds and limited by DIB_DHCP_TIMEOUT.

Change-Id: I8a6015567ac25e37b5a5aba4b1fda71170cc144a
2018-02-21 12:52:57 +00:00

123 lines
3.4 KiB
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#!/bin/bash
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
INTERFACE=${1:-} #optional, if not specified configure all available interfaces
ENI_FILE="/etc/network/interfaces"
PATH=/sbin:$PATH
if [ -d "/etc/network" ]; then
CONF_TYPE="eni"
elif [ -d "/etc/sysconfig/network-scripts/" ]; then
CONF_TYPE="rhel-netscripts"
SCRIPTS_PATH="/etc/sysconfig/network-scripts/"
elif [ -d "/etc/sysconfig/network/" ]; then
# SUSE network scripts location
CONF_TYPE="suse-netscripts"
SCRIPTS_PATH="/etc/sysconfig/network/"
else
echo "Unsupported network configuration type!"
exit 1
fi
ARGS="$0 $@"
function serialize_me() {
if [ "$CONF_TYPE" == "eni" ]; then
# Serialize runs so that we don't miss hot-add interfaces
FLOCKED=${FLOCKED:-}
if [ -z "$FLOCKED" ] ; then
FLOCKED=true exec flock -x $ENI_FILE $ARGS
fi
fi
}
function get_if_link() {
cat /sys/class/net/${1}/carrier || echo 0
}
function get_if_type() {
cat /sys/class/net/${1}/type
}
function enable_interface() {
local interface=$1
serialize_me
if [ "$CONF_TYPE" == "eni" ]; then
printf "auto $interface\niface $interface inet dhcp\n\n" >>$ENI_FILE
elif [ "$CONF_TYPE" == "rhel-netscripts" ]; then
if [ "$(get_if_type $interface)" == "32" ]; then
printf "DEVICE=\"$interface\"\nBOOTPROTO=\"dhcp\"\nONBOOT=\"yes\"\nTYPE=\"InfiniBand\"\nCONNECTED_MODE=\"no\"\nDEFROUTE=\"yes\"\nPEERDNS=\"yes\"\nPEERROUTES=\"yes\"\nIPV4_FAILURE_FATAL=\"yes\"\nIPV6INIT=\"no\"" >"${SCRIPTS_PATH}ifcfg-$interface"
else
printf "DEVICE=\"$interface\"\nBOOTPROTO=\"dhcp\"\nONBOOT=\"yes\"\nTYPE=\"Ethernet\"" >"${SCRIPTS_PATH}ifcfg-$interface"
fi
elif [ "$CONF_TYPE" == "suse-netscripts" ]; then
printf "BOOTPROTO=\"dhcp\"\nSTARTMODE=\"auto\"" >"${SCRIPTS_PATH}ifcfg-$interface"
fi
echo "Configured $1"
}
function config_exists() {
local interface=$1
if [[ "$CONF_TYPE" =~ "netscripts" ]]; then
if [ -f "${SCRIPTS_PATH}ifcfg-$interface" ]; then
return 0
fi
else
if ifquery $interface >/dev/null 2>&1; then
if [ -z "$(ifquery $interface 2>&1)" ]; then
return 1
else
return 0
fi
else
return 1
fi
fi
return 1
}
function inspect_interface() {
local interface=$1
local mac_addr_type
mac_addr_type=$(cat /sys/class/net/${interface}/addr_assign_type)
echo -n "Inspecting interface: $interface..."
if config_exists $interface; then
echo "Has config, skipping."
elif [ "$mac_addr_type" != "0" ]; then
echo "Device has generated MAC, skipping."
else
local has_link
local tries=DIB_DHCP_TIMEOUT
for ((; tries > 0; tries--)); do
# Need to set the link up on each iteration
ip link set dev $interface up &>/dev/null
has_link=$(get_if_link $interface)
[ "$has_link" == "1" ] && break
sleep 1
done
if [ "$has_link" == "1" ]; then
enable_interface "$interface"
else
echo "No link detected, skipping"
fi
fi
}
if [ -n "$INTERFACE" ]; then
inspect_interface $INTERFACE
else
for iface in $(ls /sys/class/net | grep -v ^lo$); do
inspect_interface $iface
done
fi