Fix assembly of /etc/network/interfaces
Include the other interface configs from /etc/network/interfaces.d/ after lo and existing eth*, as was initially intended. Also separate out the assembly code into its own script, as this is done both on boot via eth-eni-setup and on hotplug events by etc-eni-hotplug. Resolves #91
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9ddcac75c3
commit
24bf01621f
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@ -245,6 +245,9 @@ setup_networking() {
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"$SETUP/etc/interfaces.d/"*
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cat "$IFACE_CFG.d/lo" "$IFACE_CFG.d/eth0" > "$IFACE_CFG"
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install -o root -g root -Dm755 -t "$TARGET/etc/network" \
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"$SETUP/assemble-interfaces"
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# install ucdhcp hooks for EC2 ENI IPv6 and secondary IPv4
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install -o root -g root -Dm755 -t "$TARGET/usr/share/udhcpc" \
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"$SETUP/eth-eni-hook"
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42
scripts/setup-ami.d/assemble-interfaces
Executable file
42
scripts/setup-ami.d/assemble-interfaces
Executable file
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@ -0,0 +1,42 @@
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#!/bin/sh
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# vim: set ts=4 et:
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set -e
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IFACE_CFG=/etc/network/interfaces
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IFACE_DIR="${IFACE_CFG}.d"
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cd "$IFACE_DIR"
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cat > "$IFACE_CFG.new" <<EOT
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# NOTE: /etc/network/assemble-interfaces rewrites this file. Edit files in
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# /etc/network/interfaces.d/ to persist any customizations.
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EOT
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# loopback first
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cat lo >> "$IFACE_CFG.new"
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# existing eths
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for i in /sys/class/net/eth*; do
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IFACE="$(basename "$i")"
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[ ! -f "$IFACE" ] && sed -e "s/%%/$IFACE/g" DEFAULT > "$IFACE"
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cat "$IFACE" >> "$IFACE_CFG.new"
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done
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# all the rest
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for i in "$IFACE_DIR"/*; do
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IFACE="$(basename "$i")"
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case $IFACE in
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DEFAULT|lo|eth*)
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continue
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;;
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*)
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cat "$IFACE" >> "$IFACE_CFG.new"
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;;
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esac
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done
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# install new interfaces config
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cp -a "$IFACE_CFG" "$IFACE_CFG.bak"
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mv "$IFACE_CFG.new" "$IFACE_CFG"
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@ -1,6 +1,3 @@
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# NOTE: /lib/mdev/eth-eni-hotplug rewrites this file. Edit files in
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# /etc/network/interfaces.d/ to persist any customizations.
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auto lo
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iface lo inet loopback
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@ -23,7 +23,6 @@ RTABLE="${MDEV#eth}"
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let RTABLE+=1000
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IFACE_CFG=/etc/network/interfaces
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IFACE_DIR="${IFACE_CFG}.d"
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ip() {
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v=-4
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@ -42,15 +41,7 @@ ip() {
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assemble_interfaces() {
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log info "Rebuilding $IFACE_CFG"
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cd "$IFACE_DIR"
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cat lo > "$IFACE_CFG.new"
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for i in /sys/class/net/eth*; do
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IFACE="$(basename "$i")"
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[ ! -f "$IFACE" ] && sed -e "s/%%/$IFACE/g" DEFAULT > "$IFACE"
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cat "$IFACE" >> "$IFACE_CFG.new"
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done
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cp -a "$IFACE_CFG" "$IFACE_CFG.bak"
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mv "$IFACE_CFG.new" "$IFACE_CFG"
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/etc/network/assemble-interfaces
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}
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interface_up() {
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@ -2,35 +2,15 @@
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description="Sets up interfaces for attached Elastic Network Interfaces"
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IFACE_CFG=/etc/network/interfaces
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depend() {
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before net
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need sysfs
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}
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eni_eths() {
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local iface
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for iface in /sys/class/net/eth*; do
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echo "${iface##*/}"
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done
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}
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start() {
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local iface
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ebegin "Setting up interfaces for attached ENIs"
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cat "$IFACE_CFG.d/lo" > "$IFACE_CFG.new"
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for iface in $(eni_eths); do
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[ -f "$IFACE_CFG.d/$iface" ] ||
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sed -e "s/%%/$iface/g" "$IFACE_CFG.d/DEFAULT" > "$IFACE_CFG.d/$iface"
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cat "$IFACE_CFG.d/$iface" >> "$IFACE_CFG.new"
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einfo "$iface configured"
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done
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mv "$IFACE_CFG.new" "$IFACE_CFG"
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/etc/network/assemble-interfaces
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eend "$?"
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}
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