linux+6.5网卡uuid错误,RedHat6.5网卡问题总结

问题描述&＃xff1a;准备用RedHat6.5安装Oracle 12c RAC&＃xff0c;系统环境准备好后发现&＃xff0c;新版本的RedHat网卡配置跟以前不大一样&＃xff0c;总结问题与解决方法如下&＃xff1a;

1、找不到eth0文件

在使用RedHat6.5&＃xff0c;新装好的系统&＃xff0c;发现没有eth0网卡&＃xff0c;默认的第一个网卡是Auto-eth0

[root&＃64;rac01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-Auto_eth0

TYPE&＃61;Ethernet

BOOTPROTO&＃61;none

IPADDR&＃61;10.10.10.110

PREFIX&＃61;24

GATEWAY&＃61;10.10.10.111

DEFROUTE&＃61;yes

IPV4_FAILURE_FATAL&＃61;yes

IPV6INIT&＃61;no

NAME&＃61;eth0

UUID&＃61;86d44060-4579-48cc-b85b-219a206ca37c

ONBOOT&＃61;yes

HWADDR&＃61;00:50:56:95:09:76

LAST_CONNECT&＃61;1411004329

解决方法&＃xff1a;

直接更名ifcfg-Auto_eth0文件为eth0&＃xff0c;重启网卡后会发现&＃xff0c;网卡名已经变为eth0

[root&＃64;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&＃64;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&＃xff1a;

每次更改RedHat的网卡信息&＃xff0c;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&＃xff0c;修改里面的对应服务名即可

[root&＃64;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&＃61; key.

# PCI device 0x15ad:0x07b0 (vmxnet3)

SUBSYSTEM&＃61;&＃61;"net", ACTION&＃61;&＃61;"add", DRIVERS&＃61;&＃61;"?*", ATTR{address}&＃61;&＃61;"00:0c:29:1e:f6:ad", ATTR{type}&＃61;&＃61;"1", KERNEL&＃61;&＃61;"eth*", NAME&＃61;"eth0"

修改完成后需重启一下系统&＃xff0c;再次查看网卡服务名已经更改

[root&＃64;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&＃xff0c;新加的网卡成了eth1&＃xff0c;如何让从eth0开始

[root&＃64;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&＃xff1a;

同2问题类似&＃xff0c;即可以手动的修改70-persistent-net.rules文件&＃xff0c;将对应的MAC地址与网卡序号改成想要的&＃xff0c;也可以直接删除该文件&＃xff0c;重启系统后&＃xff0c;RedHat会自动的创建该文件&＃xff0c;并从0开始计数。

删除文件&＃xff0c;重启系统

[root&＃64;rac01 ~]# mv /etc/udev/rules.d/70-persistent-net.rules /etc/udev/rules.d/7

0-persistent-net.rules.bak

[root&＃64;rac01 ~]# reboot

再次查看&＃xff0c;会发现已经从eht0开始

[root&＃64;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&＃xff0c;总是提示

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

此时网卡也可以正常通信&＃xff0c;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&＃xff1a;

要消除这个提示&＃xff0c;请关闭NetworkManager服务即可&＃xff1a;

[root&＃64;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&＃64;rac01 ~]# service NetworkManager stop

Stopping NetworkManager daemon:                            [  OK  ]

再次重启网卡

[root&＃64;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&＃xff1a;

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&＃xff0c;可在网卡的配置文件中加入ARPCHECK&＃61;NO参数来屏蔽该检查

[root&＃64;rac01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0

TYPE&＃61;Ethernet

BOOTPROTO&＃61;none

IPADDR&＃61;10.109.67.81

PREFIX&＃61;24

GATEWAY&＃61;10.109.67.254

DEFROUTE&＃61;yes

IPV4_FAILURE_FATAL&＃61;yes

IPV6INIT&＃61;no

NAME&＃61;eth0

UUID&＃61;86d44060-4579-48cc-b85b-219a206ca37c

ONBOOT&＃61;yes

HWADDR&＃61;00:50:56:95:09:76

LAST_CONNECT&＃61;1411004329

ARPCHECK&＃61;no

再次启动网卡&＃xff0c;一切正常

[root&＃64;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  ]