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#!/bin/bash
# The following environment variables may be set to substitute in a
# custom bridge or interface name. Normally these are provided by the calling
# SoftwareConfig resource, but they may also be set manually for testing.
# $bridge_name : The bridge device name to apply
# $interface_name : The interface name to apply
#
# Also this token is replaced via a str_replace in the SoftwareConfig running
# the script - in future we may extend this to also work with a variable, e.g
# a deployment input via input_values
# $network_config : the json serialized os-net-config config to apply
#
set -eux
function get_metadata_ip() {
local METADATA_IP
# Look for a variety of Heat transports
# FIXME: Heat should provide a way to obtain this in a single place
for URL in os-collect-config.cfn.metadata_url os-collect-config.heat.auth_url os-collect-config.request.metadata_url os-collect-config.zaqar.auth_url; do
METADATA_IP=$(os-apply-config --key $URL --key-default '' --type raw 2>/dev/null | sed -e 's|http.*://\([^:]*\).*|\1|')
[ -n "$METADATA_IP" ] && break
done
echo $METADATA_IP
}
function is_local_ip() {
local IP_TO_CHECK=$1
if ip -o a | grep "inet6\? $IP_TO_CHECK/" &>/dev/null; then
return 0
else
return 1
fi
}
function ping_metadata_ip() {
local METADATA_IP=$(get_metadata_ip)
if [ -n "$METADATA_IP" ] && ! is_local_ip $METADATA_IP; then
echo -n "Trying to ping metadata IP ${METADATA_IP}..."
local COUNT=0
until ping -c 1 $METADATA_IP &> /dev/null; do
COUNT=$(( $COUNT + 1 ))
if [ $COUNT -eq 10 ]; then
echo "FAILURE"
echo "$METADATA_IP is not pingable." >&2
exit 1
fi
done
echo "SUCCESS"
else
echo "No metadata IP found. Skipping."
fi
}
function configure_safe_defaults() {
[[ $? == 0 ]] && return 0
cat > /etc/os-net-config/dhcp_all_interfaces.yaml <<EOF_CAT
# This file is an autogenerated safe defaults file for os-net-config
# which runs DHCP on all discovered interfaces to ensure connectivity
# back to the undercloud for updates
network_config:
EOF_CAT
for iface in $(ls /sys/class/net | grep -v ^lo$); do
local mac_addr_type="$(cat /sys/class/net/${iface}/addr_assign_type)"
if [ "$mac_addr_type" != "0" ]; then
echo "Device has generated MAC, skipping."
else
ip link set dev $iface up &>/dev/null
HAS_LINK="$(cat /sys/class/net/${iface}/carrier)"
TRIES=10
while [ "$HAS_LINK" == "0" -a $TRIES -gt 0 ]; do
HAS_LINK="$(cat /sys/class/net/${iface}/carrier)"
if [ "$HAS_LINK" == "1" ]; then
break
else
sleep 1
fi
TRIES=$(( TRIES - 1 ))
done
if [ "$HAS_LINK" == "1" ] ; then
cat >> /etc/os-net-config/dhcp_all_interfaces.yaml <<EOF_CAT
-
type: interface
name: $iface
use_dhcp: true
EOF_CAT
fi
fi
done
set +e
os-net-config -c /etc/os-net-config/dhcp_all_interfaces.yaml -v --detailed-exit-codes --cleanup
RETVAL=$?
set -e
if [[ $RETVAL == 2 ]]; then
ping_metadata_ip
elif [[ $RETVAL != 0 ]]; then
echo "ERROR: configuration of safe defaults failed."
fi
}
if [ -n '$network_config' ]; then
if [ -z "${disable_configure_safe_defaults:-}" ]; then
trap configure_safe_defaults EXIT
fi
mkdir -p /etc/os-net-config
# Note these variables come from the calling heat SoftwareConfig
echo '$network_config' > /etc/os-net-config/config.json
if [ "$(type -t network_config_hook)" = "function" ]; then
network_config_hook
fi
sed -i "s/bridge_name/${bridge_name:-''}/" /etc/os-net-config/config.json
sed -i "s/interface_name/${interface_name:-''}/" /etc/os-net-config/config.json
set +e
os-net-config -c /etc/os-net-config/config.json -v --detailed-exit-codes
RETVAL=$?
set -e
if [[ $RETVAL == 2 ]]; then
ping_metadata_ip
#NOTE: dprince this udev rule can apparently leak DHCP processes?
# https://bugs.launchpad.net/tripleo/+bug/1538259
# until we discover the root cause we can simply disable the
# rule because networking has already been configured at this point
if [ -f /etc/udev/rules.d/99-dhcp-all-interfaces.rules ]; then
rm /etc/udev/rules.d/99-dhcp-all-interfaces.rules
fi
elif [[ $RETVAL != 0 ]]; then
echo "ERROR: os-net-config configuration failed." >&2
exit 1
fi
fi
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