7b41f8160b
There are two issues with dhcp-all-interfaces on debuntu interfaces addressed here. First is the path to dhclient lease files is /var/lib/dhcp not /var/lib/dhclient. Second there is a missing newline in the ENI interface file which causes a parse error. Change-Id: Ice83e0d49a4234301dc12daf828ba80fef414cdb
220 lines
8.2 KiB
Bash
Executable File
220 lines
8.2 KiB
Bash
Executable File
#!/bin/bash
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if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
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set -x
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fi
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set -eu
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set -o pipefail
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INTERFACE=${1:-} #optional, if not specified configure all available interfaces
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ENI_FILE="/etc/network/interfaces"
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PATH=/sbin:$PATH
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if [ -d "/etc/network" ]; then
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CONF_TYPE="eni"
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elif [ -d "/etc/sysconfig/network-scripts/" ]; then
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CONF_TYPE="rhel-netscripts"
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SCRIPTS_PATH="/etc/sysconfig/network-scripts/"
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elif [ -d "/etc/sysconfig/network/" ]; then
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# SUSE network scripts location
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CONF_TYPE="suse-netscripts"
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SCRIPTS_PATH="/etc/sysconfig/network/"
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else
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echo "Unsupported network configuration type!"
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exit 1
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fi
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ARGS="$0 $@"
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function serialize_me() {
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if [ "$CONF_TYPE" == "eni" ]; then
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# Serialize runs so that we don't miss hot-add interfaces
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FLOCKED=${FLOCKED:-}
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if [ -z "$FLOCKED" ] ; then
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FLOCKED=true exec flock -x $ENI_FILE $ARGS
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fi
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fi
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}
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function get_if_link() {
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cat /sys/class/net/${1}/carrier || echo 0
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}
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function get_if_type() {
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cat /sys/class/net/${1}/type
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}
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function interface_is_vlan() {
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# Check if this is a vlan interface created on top of an Ethernet interface.
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local interface=$1
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# When the vlan interface is created, its mac address is copied from the
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# underlying address and the address assignment type is set to 2
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mac_addr_type=$(cat /sys/class/net/${interface}/addr_assign_type)
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if [ "$mac_addr_type" != "2" ]; then
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return 1
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fi
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# Only check for vlan interfaces named <interface>.<vlan>
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lower_interface="$(echo $interface | cut -f1 -d'.')"
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if [[ ! -z $lower_interface ]]; then
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mac_addr_type=$(cat /sys/class/net/${lower_interface}/addr_assign_type)
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if [ "$mac_addr_type" == "0" ]; then
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return 0 # interface is vlan
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fi
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fi
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return 1
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}
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function enable_interface() {
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local interface=$1
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local ipv6_init=$2
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local ipv6_AdvManagedFlag=$3
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local ipv6_AdvOtherConfigFlag=$4
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serialize_me
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if [ "$CONF_TYPE" == "eni" ]; then
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printf "auto $interface\niface $interface inet dhcp\n\n" >>$ENI_FILE
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if [ "$ipv6_init" == "True" ]; then
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# Make DUID-UUID Type 4 (RFC 6355)
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echo "default-duid \"\\x00\\x04$(sed 's/.\{2\}/\\x&/g' < /etc/machine-id)\";" >"/var/lib/dhcp/dhclient6--$interface.lease"
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if [ $ipv6_AdvManagedFlag == "Yes" ]; then
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# IPv6 DHCPv6 Stateful address configuration
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printf "iface $interface inet6 dhcp\n\n" >>$ENI_FILE
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echo "DHCPv6 Stateful Configured."
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elif [ $ipv6_AdvOtherConfigFlag == "Yes" ]; then
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# IPv6 DHCPv6 Stateless address configursation
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printf "iface $interface inet6 auto\n\tdhcp 1\n\n" >>$ENI_FILE
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echo "DHCPv6 Stateless Configured."
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else
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# IPv6 Autoconfiguration (SLAAC)
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printf "iface $interface inet6 auto\n\tdhcp 0\n\n" >>$ENI_FILE
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echo "IPv6 SLAAC Configured"
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fi
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fi
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printf "\n" >>$ENI_FILE
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elif [ "$CONF_TYPE" == "rhel-netscripts" ]; then
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if [ "$(get_if_type $interface)" == "32" ]; then
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printf "DEVICE=\"$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"
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else
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if interface_is_vlan $interface; then
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printf "DEVICE=\"$interface\"\nBOOTPROTO=\"dhcp\"\nONBOOT=\"yes\"\nVLAN=\"yes\"\n" >"${SCRIPTS_PATH}ifcfg-$interface"
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else
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printf "DEVICE=\"$interface\"\nBOOTPROTO=\"dhcp\"\nONBOOT=\"yes\"\nTYPE=\"Ethernet\"\n" >"${SCRIPTS_PATH}ifcfg-$interface"
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fi
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if [ "$ipv6_init" == "True" ]; then
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# Make DUID-UUID Type 4 (RFC 6355)
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echo "default-duid \"\\x00\\x04$(sed 's/.\{2\}/\\x&/g' < /etc/machine-id)\";" >"/var/lib/dhclient/dhclient6--$interface.lease"
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printf "IPV6INIT=\"yes\"\n" >>"${SCRIPTS_PATH}ifcfg-$interface"
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if [ $ipv6_AdvManagedFlag == "Yes" ]; then
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# IPv6 DHCPv6 Stateful address configuration
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printf "IPV6_FORCE_ACCEPT_RA=\"yes\"\nDHCPV6C=\"yes\"\n" >>"${SCRIPTS_PATH}ifcfg-$interface"
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echo "DHCPv6 Stateful Configured"
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elif [ $ipv6_AdvOtherConfigFlag == "Yes" ]; then
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# IPv6 DHCPv6 Stateless address configursation
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printf "IPV6_AUTOCONF=\"yes\"\nDHCPV6C=\"yes\"\nDHCPV6C_OPTIONS=\"-S\"\n" >>"${SCRIPTS_PATH}ifcfg-$interface"
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echo "DHCPv6 Stateless Configured"
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else
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# IPv6 Autoconfiguration (SLAAC)
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printf "IPV6_AUTOCONF=\"yes\"\n" >>"${SCRIPTS_PATH}ifcfg-$interface"
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echo "IPv6 SLAAC Configured"
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fi
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fi
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fi
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elif [ "$CONF_TYPE" == "suse-netscripts" ]; then
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printf "BOOTPROTO=\"dhcp\"\nSTARTMODE=\"auto\"" >"${SCRIPTS_PATH}ifcfg-$interface"
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fi
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echo "Configured $1"
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}
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function config_exists() {
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local interface=$1
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if [[ "$CONF_TYPE" =~ "netscripts" ]]; then
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if [ -f "${SCRIPTS_PATH}ifcfg-$interface" ]; then
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return 0
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fi
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else
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if ifquery $interface >/dev/null 2>&1; then
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if [ -z "$(ifquery $interface 2>&1)" ]; then
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return 1
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else
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return 0
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fi
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else
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return 1
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fi
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fi
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return 1
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}
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function inspect_interface() {
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local interface=$1
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local mac_addr_type
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mac_addr_type=$(cat /sys/class/net/${interface}/addr_assign_type)
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echo -n "Inspecting interface: $interface..."
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if config_exists $interface; then
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echo "Has config, skipping."
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elif interface_is_vlan $interface || [ "$mac_addr_type" == "0" ]; then
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local has_link
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local tries=DIB_DHCP_TIMEOUT
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for ((; tries > 0; tries--)); do
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# Need to set the link up on each iteration
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ip link set dev $interface up &>/dev/null
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has_link=$(get_if_link $interface)
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[ "$has_link" == "1" ] && break
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sleep 1
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done
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if [ "$has_link" == "1" ]; then
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local ipv6_init=False
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local ipv6_AdvManagedFlag=No
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local ipv6_AdvOtherConfigFlag=No
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if type rdisc6 &>/dev/null; then
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# We have rdisc6, let's try to configure IPv6 autoconfig/dhcpv6
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tries=DIB_DHCP_TIMEOUT
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for ((; tries > 0; tries--)); do
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# Need to retry this, link-local-address required for
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# Neighbor Discovery, DHCPv6 etc.
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set +e # Do not exit on error, capture rdisc6 error codes.
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RA=$(rdisc6 --retry 3 --single "$interface" 2>/dev/null)
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local return_code=$?
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set -e # Re-enable exit on error.
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if [ $return_code -eq 0 ]; then
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ipv6_init=True
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ipv6_AdvManagedFlag=$(echo "$RA" | grep "Stateful address conf." | awk -F: '{ print $2 }')
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ipv6_AdvOtherConfigFlag=$(echo "$RA" | grep "Stateful other conf." | awk -F: '{ print $2 }')
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break
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elif [ $return_code -eq 1 ]; then
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sleep 1
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elif [ $return_code -eq 2 ]; then
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# If rdisc6 does not receive any response after the
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# specified number of attempts waiting for wait_ms
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# (1000ms by default) milliseconds each time, it will
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# exit with code 2.
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break
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fi
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done
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else
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echo "rdisc6 not available, skipping IPv6 configuration."
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fi
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enable_interface "$interface" "$ipv6_init" "$ipv6_AdvManagedFlag" "$ipv6_AdvOtherConfigFlag"
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else
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echo "No link detected, skipping"
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fi
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else
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echo "Device has generated MAC, skipping."
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fi
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}
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if [ -n "$INTERFACE" ]; then
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inspect_interface $INTERFACE
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else
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for iface in $(ls /sys/class/net | grep -v ^lo$); do
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inspect_interface $iface
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done
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fi
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