vim /etc/sysconfig/network-scripts/ifcfg-eth1
為DEVICE=”eth1″
然後重啟啟動網卡嘗試下
故障前的操作：
DELL刀片裝的是CentOS6.3的作業系統，網卡識別的是em1和em2，由於工作需要做了槽位調整，並啟動了刀片
故障現象：
啟動後網路不通，通過iDRAC登錄後route查看預設路由正常；
重啟網路服務：
[root@nodeA ~]# service network restart Shutting down loopback insterface: [ OK ]
Bringing up loopback insterface: [ OK ]
Bringing up interface em1: Device em1 does not seem to be present,delaying initialization. [FAILED]
分析問題和解決：
之前在別的文章中我們提過70-persistent-net.rules文件，所以看了一下：
[root@nodeA ~]# vi /etc/udev/rules.d/70-persistent-net.rules
# This file was automatically generated by the /lib/udev/write_net_rules # program, run by the persistent-net-generator.rules rules file. # # You can modify it, as long as you keep each rule on a single # line, and change only the value of the NAME= key.
# PCI device 0x14e4:0x163a (bnx2) SUBSYSTEM==”net”, ACTION==”add”, DRIVERS==”?*”, ATTR{address}==”24:b6:fd:ab:76:1e”, ATTR{type}==”1″, KERNEL==”eth*”, NAME=”eth1“
# PCI device 0x14e4:0x163a (bnx2) SUBSYSTEM==”net”, ACTION==”add”, DRIVERS==”?*”, ATTR{address}==”24:b6:fd:ab:76:1c”, ATTR{type}==”1″, KERNEL==”eth*”, NAME=”eth0“
發現NAME的名稱不正確，依次將上述紅色字體中的eth0改為em1，eth1改為em2；
*切記：網卡編號由MAC地址大小決定，MAC越小網卡編號越小；
如下：
…………
# PCI device 0x14e4:0x163a (bnx2)
SUBSYSTEM==”net”, ACTION==”add”, DRIVERS==”?*”, ATTR{address}==”24:b6:fd:ab:76:1e”, ATTR{type}==”1″, KERNEL==”eth*”, NAME=”em2″
# PCI device 0x14e4:0x163a (bnx2) SUBSYSTEM==”net”, ACTION==”add”, DRIVERS==”?*”, ATTR{address}==”24:b6:fd:ab:76:1c”, ATTR{type}==”1″, KERNEL==”eth*”, NAME=”em1″
保存退出~！
[root@nodeA ~]#reboot
………………
問題解決~！
