RedHat6.5网卡问题总结
时间：2014-12-04 02:16:22
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RedHat6.5网卡问题总结
问题描述：准备用RedHat6.5安装Oracle 12c RAC，系统环境准备好后发现，新版本的RedHat网卡配置跟以前不大一样，总结问题与解决方法如下：
1、找不到eth0文件
在使用RedHat6.5，新装好的系统，发现没有eth0网卡，默认的第一个网卡是Auto-eth0
[root@rac01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-Auto_eth0 TYPE=Ethernet BOOTPROTO=none IPADDR=10.10.10.110 PREFIX=24 GATEWAY=10.10.10.111 DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME=eth0 UUID=86d44060-4579-48cc-b85b-219a206ca37c ONBOOT=yes HWADDR=00:50:56:95:09:76 LAST_CONNECT=1411004329 |
解决方法：
直接更名ifcfg-Auto_eth0文件为eth0，重启网卡后会发现，网卡名已经变为eth0
[root@rac01 ~]# service network restart
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: Active connection state: activated
2、ifconfig 发现网卡服务名并未更改
[root@rac01 ~]# ifconfig Auto_eth0 Link encap:Ethernet HWaddr 00:50:56:95:09:76 inet addr:10.10.10.110 Bcast:10.10.10.111 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fe95:976/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:484 errors:0 dropped:0 overruns:0 frame:0 TX packets:57 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:40095 (39.1 KiB) TX bytes:6271 (6.1 KiB) |
解决方法：
每次更改RedHat的网卡信息，RedHat会自动的将网卡的MAC地址和对应的网卡服务名关系记录在/etc/udev/rules.d/70-persistent-net.rules中，修改里面的对应服务名即可
[root@rac01 ~]# vim /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 0x15ad:0x07b0 (vmxnet3) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:1e:f6:ad", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" |
修改完成后需重启一下系统，再次查看网卡服务名已经更改
[root@rac01 ~]# ifconfig eth0 Link encap:Ethernet HWaddr 00:50:56:95:09:76 inet addr:10.109.67.81 Bcast:10.109.67.255 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fe95:976/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:985 errors:0 dropped:0 overruns:0 frame:0 TX packets:61 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:74395 (72.6 KiB) TX bytes:6527 (6.3 KiB) |
3、网卡eth0被删除后，新加的网卡成了eth1，如何让从eth0开始
[root@rac01 ~]# ifconfig eth1 Link encap:Ethernet HWaddr 00:50:56:95:09:76 inet addr:10.10.10.110 Bcast:10.10.10.111 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fe95:976/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:830 errors:0 dropped:0 overruns:0 frame:0 TX packets:57 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:63700 (62.2 KiB) TX bytes:6259 (6.1 KiB) eth2 Link encap:Ethernet HWaddr 00:0C:29:1E:F6:B7 inet addr:10.10.10.120 Bcast:10.10.10.111Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe1e:f6b7/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:777 errors:0 dropped:0 overruns:0 frame:0 TX packets:11 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:54938 (53.6 KiB) TX bytes:746 (746.0 b) |
解决方法：
同2问题类似，即可以手动的修改70-persistent-net.rules文件，将对应的MAC地址与网卡序号改成想要的，也可以直接删除该文件，重启系统后，RedHat会自动的创建该文件，并从0开始计数。
删除文件，重启系统
[root@rac01 ~]# mv /etc/udev/rules.d/70-persistent-net.rules /etc/udev/rules.d/7
0-persistent-net.rules.bak
[root@rac01 ~]# reboot
再次查看，会发现已经从eht0开始
[root@rac01 ~]# ifconfig eth0 Link encap:Ethernet HWaddr 00:50:56:95:09:76 inet addr:10.109.67.81 Bcast:10.109.67.255 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fe95:976/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:206 errors:0 dropped:0 overruns:0 frame:0 TX packets:68 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:19282 (18.8 KiB) TX bytes:7215 (7.0 KiB) eth1 Link encap:Ethernet HWaddr 00:0C:29:1E:F6:B7 inet addr:10.109.67.83 Bcast:10.109.67.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe1e:f6b7/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:131 errors:0 dropped:0 overruns:0 frame:0 TX packets:11 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:8736 (8.5 KiB) TX bytes:746 (746.0 b) |
4、每次重启网卡，总是提示
Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/9
此时网卡也可以正常通信，这个是因为RedHat自己开发的NetworkManager管理工具和/etc/sysconfig/network-scripts/ifcfg-ethx配置不同步造成的。
解决方法：
要消除这个提示，请关闭NetworkManager服务即可：
[root@rac01 ~]# service network restart Shutting down loopback interface: [ OK ] Bringing up loopback interface: [ OK ] Bringing up interface eth0: Active connection state: activated Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/2 [ OK ] Bringing up interface eth1: Active connection state: activated Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/3 [ OK ] |
关闭NetworkManager服务
[root@rac01 ~]# service NetworkManager stop
Stopping NetworkManager daemon: [ OK ]
再次重启网卡
[root@rac01 ~]# service network restart
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
Bringing up interface eth1: [ OK ]
5、重启网卡出现提示：
Bringing up interface eth0: Determining if ip address 10.109.67.81 is already in use for device eth0...
[ OK ]
Bringing up interface eth1: Determining if ip address 10.109.67.83 is already in use for device eth1...
[ OK ]
该警告一般是由于网卡解析arp协议导致的，可在网卡的配置文件中加入ARPCHECK=NO参数来屏蔽该检查
[root@rac01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 TYPE=Ethernet BOOTPROTO=none IPADDR=10.109.67.81 PREFIX=24 GATEWAY=10.109.67.254 DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME=eth0 UUID=86d44060-4579-48cc-b85b-219a206ca37c ONBOOT=yes HWADDR=00:50:56:95:09:76 LAST_CONNECT=1411004329 ARPCHECK=no |
再次启动网卡，一切正常
[root@rac01 ~]# service network restart
Shutting down interface eth0: [ OK ]
Shutting down interface eth1: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
Bringing up interface eth1: [ OK ]
原文：http://www.blogjava.net/qileilove/archive/2014/12/03/420960.html
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