Created
March 11, 2012 16:26
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additional configuration for network in openvz, used primarly to be able to set up bridges between container and host node
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#!/usr/bin/env bash | |
# /usr/sbin/vznetcfg.custom | |
# originally from: http://wiki.openvz.org/Using_private_IPs_for_Hardware_Nodes | |
# a script to bring up bridged network interfaces (veth's) in a container | |
# modified 2012-03-11 to work with dhcp configured containers | |
GLOBALCONFIGFILE=/etc/vz/vz.conf | |
CTCONFIGFILE=/etc/vz/conf/$VEID.conf | |
vzctl=/usr/sbin/vzctl | |
brctl=/usr/sbin/brctl | |
ip=/sbin/ip | |
ifconfig=/sbin/ifconfig | |
# sourcing configs | |
. $GLOBALCONFIGFILE | |
. $CTCONFIGFILE | |
NETIF_OPTIONS=`echo $NETIF | sed 's/,/\n/g'` | |
for str in $NETIF_OPTIONS; do \ | |
# getting 'ifname' parameter value | |
if echo "$str" | grep -o "^ifname=" ; then | |
# remove the parameter name from the string (along with '=') | |
CTIFNAME=${str#*=}; | |
fi | |
# getting 'host_ifname' parameter value | |
if echo "$str" | grep -o "^host_ifname=" ; then | |
# remove the parameter name from the string (along with '=') | |
VZHOSTIF=${str#*=}; | |
fi | |
done | |
# this is uncommented since it's not a requirement to have VETH_IP_ADDRESS | |
# for instance, when using dhcp incontainer | |
#if [ ! -n "$VETH_IP_ADDRESS" ]; then | |
# echo "According to $CONFIGFILE CT$VEID has no veth IPs configured." | |
# exit 1 | |
#fi | |
if [ ! -n "$VZHOSTIF" ]; then | |
echo "According to $CONFIGFILE CT$VEID has no veth interface configured." | |
exit 1 | |
fi | |
if [ ! -n "$CTIFNAME" ]; then | |
echo "Corrupted $CONFIGFILE: no 'ifname' defined for host_ifname $VZHOSTIF." | |
exit 1 | |
fi | |
echo "Initializing interface $VZHOSTIF for CT$VEID." | |
$ifconfig $VZHOSTIF 0 | |
CTROUTEDEV=$VZHOSTIF | |
if [ -n "$BRIDGEDEV" ]; then | |
echo "Adding interface $VZHOSTIF to the bridge $BRIDGEDEV." | |
CTROUTEDEV=$BRIDGEDEV | |
$brctl addif $BRIDGEDEV $VZHOSTIF | |
fi | |
# Up the interface $CTIFNAME link in CT$VEID | |
$vzctl exec $VEID $ip link set $CTIFNAME up | |
for IP in $VETH_IP_ADDRESS; do | |
echo "Adding an IP $IP to the $CTIFNAME for CT$VEID." | |
$vzctl exec $VEID $ip address add $IP dev $CTIFNAME | |
# removing the netmask | |
IP_STRIP=${IP%%/*}; | |
echo "Adding a route from CT0 to CT$VEID using $IP_STRIP." | |
$ip route add $IP_STRIP dev $CTROUTEDEV | |
done | |
if [ -n "$CT0_IP" ]; then | |
echo "Adding a route from CT$VEID to CT0." | |
$vzctl exec $VEID $ip route add $CT0_IP dev $CTIFNAME | |
fi | |
if [ -n "$VE_DEFAULT_GATEWAY" ]; then | |
echo "Setting $VE_DEFAULT_GATEWAY as a default gateway for CT$VEID." | |
$vzctl exec $VEID \ | |
$ip route add default via $VE_DEFAULT_GATEWAY dev $CTIFNAME | |
fi | |
exit 0 |
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