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Linux教程網 >> Linux基礎 >> Linux教程 >> RedHat6.5網卡問題總結

RedHat6.5網卡問題總結

日期:2017/2/28 14:25:45   编辑:Linux教程

問題描述:准備用RedHat6.5安裝Oracle 12c RAC,系統環境准備好後發現,新版本的RedHat網卡配置跟以前不大一樣,總結問題與解決方法如下:

1、找不到eth0文件

在使用RedHat6.5,新裝好的系統,發現沒有eth0網卡,默認的第一個網卡是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

解決方法:

直接更名ifcfg-Auto_eth0文件為eth0,重啟網卡後會發現,網卡名已經變為eth0

[root@rac01 ~]# service network restart

Bringing up loopback interface: [ OK ]

Bringing up interface eth0: Active connection state: activated

2、ifconfig 發現網卡服務名並未更改

[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)

解決方法:

每次更改RedHat的網卡信息,RedHat會自動的將網卡的MAC地址和對應的網卡服務名關系記錄在/etc/udev/rules.d/70-persistent-net.rules中,修改裡面的對應服務名即可

[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"

修改完成後需重啟一下系統,再次查看網卡服務名已經更改

[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、網卡eth0被刪除後,新加的網卡成了eth1,如何讓從eth0開始

[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)

解決方法:

同2問題類似,即可以手動的修改70-persistent-net.rules文件,將對應的MAC地址與網卡序號改成想要的,也可以直接刪除該文件,重啟系統後,RedHat會自動的創建該文件,並從0開始計數。

刪除文件,重啟系統

[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,會發現已經從eht0開始

[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、每次重啟網卡,總是提示

Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/9

此時網卡也可以正常通信,這個是因為RedHat自己開發的NetworkManager管理工具和/etc/sysconfig/network-scripts/ifcfg-ethx配置不同步造成的。

解決方法:

要消除這個提示,請關閉NetworkManager服務即可:

[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 ]

關閉NetworkManager服務

[root@rac01 ~]# service NetworkManager stop

Stopping NetworkManager daemon: [ OK ]

再次重啟網卡

[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、重啟網卡出現提示:
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 ]


該警告一般是由於網卡解析arp協議導致的,可在網卡的配置文件中加入ARPCHECK=NO參數來屏蔽該檢查
[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

再次啟動網卡,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 ]

更多RedHat相關信息見RedHat 專題頁面 http://www.linuxidc.com/topicnews.aspx?tid=10

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