OpenStack镜像双网卡自动配置脚本

本文档介绍 OpenStack镜像双网卡自动配置脚本 的相关内容。

1. 使用NetworkManager 镜像中启动NetworkManager 在添加其它地址时自动配置

如果未启用NetworkManager可以使用下边的方式

首先在/etc/udev/rules.d 创建70-add-eth1.rules和70-del-eth1.rules

vim /etc/udev/rules.d/70-add-eth1.rules ACTION=="add", KERNEL=="eth1", SUBSYSTEM=="net", DRIVERS=="", ATTR{type}=="1", PROGRAM="/usr/bin/add_net.sh" vim /etc/udev/rules.d/70-del-eth1.rules ACTION=="remove", KERNEL=="eth1", SUBSYSTEM=="net", PROGRAM="/usr/bin/del_net.sh"

增加添加网卡的脚本

# !/bin/bash # add_net.sh export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/root/bin:/root/bin # eth0内网,eth1外网 eth0='/etc/sysconfig/network-scripts/ifcfg-eth0' eth1='/etc/sysconfig/network-scripts/ifcfg-eth1' # 第一次启动, 交给jgcloud_init执行 if grep "BOOTPROTO=dhcp" $eth0 > /dev/null; then exit 0 fi # 重启时 # 如果已经有固定外网ip,则略过,避免重复执行 if [ -e $eth1 ]; then if grep "BOOTPROTO=static" $eth1 > /dev/null; then exit 0 fi fi # eth1 外网配置文件 cat > ${eth1} << EOF TYPE=Ethernet DEVICE=eth1 BOOTPROTO=dhcp NM_CONTROLLED=no PEERDNS=no ONBOOT=yes EOF dhcp_pid=`ps -ef | grep "dhclient--eth1" | awk '{print $1}'` if [ "x${dhcp_pid}" != "x" ]; then kill -9 $dhcp_pid fi # 启动eth1, dhcp获取信息 dhcp_file='/var/lib/dhclient/dhclient--eth1.lease' > $dhcp_file ifdown eth1 ifup eth1 while : do if cat $dhcp_file | grep "fixed-address" > /dev/null; then IPADDR=`grep 'fixed-address' $dhcp_file | awk '{print $2}' | sed 's/;//'` NETMASK=`grep 'option subnet-mask' $dhcp_file | awk '{print $3}' | sed 's/;//'` GATEWAY=`grep 'option routers' $dhcp_file | awk '{print $3}' | sed 's/;//'` dhcp_pid=`ps -ef | grep "dhclient--eth1" | awk '{print $1}'` if [ "x${dhcp_pid}" != "x" ]; then kill -9 $dhcp_pid fi break fi sleep 5 done # 固化eth1 cat > $eth1 <<EOF TYPE=Ethernet DEVICE=eth1 BOOTPROTO=static NM_CONTROLLED=no PEERDNS=no ONBOOT=yes IPADDR=${IPADDR} NETMASK=${NETMASK} GATEWAY=${GATEWAY} EOF # 注释eth0网关 sed -i '/^GATEWAY/s/^/#/' $eth0 systemctl restart network # 添加富丰路由: # 废弃, 采用jgcloud_init里加入route-eth0里方法 # lan_gw=`cat $eth0 | awk -F'=' '/GATEWAY/{print $2}'` # if [[ "$lan_gw" != "" ]]; then # route add -net 172.16.0.0/16 gw $lan_gw # echo "route add -net 172.16.0.0/16 gw $lan_gw" >> /etc/rc.local # fi

增加删除网卡的脚本

# !/bin/bash # eth0内网,eth1外网 eth0='/etc/sysconfig/network-scripts/ifcfg-eth0' eth1='/etc/sysconfig/network-scripts/ifcfg-eth1' # 删除eth1配置文件 rm -f $eth1 # 取消注释的eth0网关 sed -i '/^#GATEWAY/s/^#//' $eth0 systemctl restart network # 删除富丰路由 # lan_gw=`cat $eth0 | awk -F'=' '/GATEWAY/{print $2}'` # if [[ "$lan_gw" != "" ]]; then # route del -net 172.16.0.0/16 gw $lan_gw # echo "route add -net 172.16.0.0/16 gw $lan_gw" >> /etc/rc.local # sed -i "/${lan_gw}/d" /etc/rc.d/rc.local # fi