device "eth0" does not seem to be present问题解决
VM下ESXI5.5平台下,一台虚拟机重启,报如下信息:
device "eth0" does not seem to be present, delaying initialization通过分析,原因是Centos6使用udev动态管理设备文件将MAC地址和网卡名称对应记录在udev的规则脚本中,VMware升级后虚拟机网卡MAC会改变,这样系统会认为网卡是新增的并命名为eth1,查看如下:
ip add 1: lo:mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth1: mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000 link/ether 00:0c:29:ce:c0:1e brd ff:ff:ff:ff:ff:ff inet 192.168.1.13/24 brd 192.168.1.255 scope global eth1 inet6 fe80::20c:29ff:fece:c01e/64 scope link
解决方法1,修改网络配置文件设备eth0为eth1:
cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE="eth1" BOOTPROSTO=static IPADDR=192.168.1.13 NETMASK=255.255.255.0 GATEWAY=192.168.1.1 ONBOOT="yes"
解决方法2,修改udev记录的mac与网卡名称对应规则:
cat /etc/udev/rules.d/70-persistent-net.rules # PCI device 0x1022:0x2000 (pcnet32) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?[i]", ATTR{address}=="00:0c:29:ce:c0:1e", ATTR{type}=="1", KERNEL=="eth[/i]", NA
解决方法3,删除规则文件,重启虚拟机
# rm -rf /etc/udev/rules.d/70-persistent-net.rules # reboot