不做第二个别人,永远做第一个自己。
分类: LINUX
2013-09-22 20:10:48
故障前的操作:
DELL刀片装的是CentOS6.3的操作系统,网卡识别的是em1和em2,由于工作需要做了槽位调整,并启动了刀片
故障现象:
启动后网络不通,通过iDRAC登录后route查看缺省路由正常;
重启网络服务:
[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]
分析问题和解决:
之前在别的文章中我们提过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"
发现NAME的名称不正确,依次将上述红色字体中的eth0改为em1,eth1改为em2;
*切记:网卡编号由MAC地址大小决定,MAC越小网卡编号越小;
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
………………
问题解决~!