Setup OpenNode OS networking

on-net-setup.sh

#!/bin/bash
# Copyright (C) 2013, OpenNode LLC. All rights reserved.
# Email: info@opennodecloud.com
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# DESCRIPTION:
# on-net-setup.sh is used for reconfiguring host networking 
# to be compatible with OpenNode OS

# Config
INTBRIDGE=vmbr0
IFCFG_PATH=/etc/sysconfig/network-scripts
BRIDGE_FILE=ifcfg-${INTBRIDGE}
ETHDEV=$(ip route show default | awk '/default/ {print $5}')
ETHDEV_FILE=ifcfg-${ETHDEV}
TMPLOC=/tmp
TMPFILE=network-config

echo "INFO: Setting up OpenNode OS bridge networking"
echo "INFO: Detected current default gateway device as: ${ETHDEV}"
sleep 3

echo "INFO: Backing up ${IFCFG_PATH}/${ETHDEV_FILE} into ${TMPLOC}/${ETHDEV_FILE}.bup"
cp -p ${IFCFG_PATH}/${ETHDEV_FILE} ${TMPLOC}/${ETHDEV_FILE}.bup

echo "INFO: Creating ${INTBRIDGE} integration bridge configuration"
echo "ONBOOT=yes" > ${IFCFG_PATH}/${BRIDGE_FILE}
echo "TYPE=Bridge" >> ${IFCFG_PATH}/${BRIDGE_FILE}
echo "DEVICE=vmbr0" >> ${IFCFG_PATH}/${BRIDGE_FILE}
echo "STP=off" >> ${IFCFG_PATH}/${BRIDGE_FILE}
grep BOOTPROTO ${IFCFG_PATH}/${ETHDEV_FILE} >> ${IFCFG_PATH}/${BRIDGE_FILE}
grep IPADDR ${IFCFG_PATH}/${ETHDEV_FILE} >> ${IFCFG_PATH}/${BRIDGE_FILE}
grep NETMASK ${IFCFG_PATH}/${ETHDEV_FILE} >> ${IFCFG_PATH}/${BRIDGE_FILE}
grep GATEWAY ${IFCFG_PATH}/${ETHDEV_FILE} >> ${IFCFG_PATH}/${BRIDGE_FILE}
grep DNS ${IFCFG_PATH}/${ETHDEV_FILE} >> ${IFCFG_PATH}/${BRIDGE_FILE}
grep IPV6 ${IFCFG_PATH}/${ETHDEV_FILE} >> ${IFCFG_PATH}/${BRIDGE_FILE}

echo "INFO: Re-configuring ${ETHDEV} as ${INTBRIDGE} bridge member"
echo "DEVICE=${ETHDEV}" > ${TMPLOC}/${TMPFILE}
echo "BOOTPROTO=none" >> ${TMPLOC}/${TMPFILE}
echo "ONBOOT=yes" >> ${TMPLOC}/${TMPFILE}
echo "TYPE=Ethernet" >> ${TMPLOC}/${TMPFILE}
echo "BRIDGE=${INTBRIDGE}" >> ${TMPLOC}/${TMPFILE}
grep HWADDR ${IFCFG_PATH}/${ETHDEV_FILE} >> ${TMPLOC}/${TMPFILE}
grep BONDING_OPTS ${IFCFG_PATH}/${ETHDEV_FILE} >> ${TMPLOC}/${TMPFILE}

# Override existing ETHDEV conf
cat ${TMPLOC}/${TMPFILE} > ${IFCFG_PATH}/${ETHDEV_FILE}

echo "INFO: OpenNode OS bridge networking setup - DONE!"
sleep 3

echo "--------------------------------------------"
echo "INFO: Displaying ${INTBRIDGE} configuration:"
echo "--------------------------------------------"
cat ${IFCFG_PATH}/${BRIDGE_FILE}
echo "--------------------------------------------"
sleep 3

echo "INFO: Displaying ${ETHDEV} configuration:"
echo "--------------------------------------------"
cat ${IFCFG_PATH}/${ETHDEV_FILE}
echo "--------------------------------------------"
sleep 3

echo "INFO: Please execute 'service network restart' for activating the changes..."
exit 0

wget -q -O - https://gist.github.com/mainframe/5615446/raw/on-net-setup.sh | bash