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 ]

RedHat6.5网卡问题总结相关推荐

为什么redhat6/centos6里看到的网卡是em*？
为什么80%的码农都做不了架构师?>>> 此前在dell的R720服务器上安装Centos6.x系统,通过ifconfig -a发现显示的网卡是em*,和以往的eth*不一样, ...
redhat6.5版本虚拟机添加网卡后不显示解决办法
redhat6.5版本虚拟机添加网卡后不显示明明添加了网卡,但却不显示,只显示一个eth0,没有新添加的eth1 具体解决办法: 1.找到eth1 的mac地址:ATTR{address}==&qu ...
linux环境中,查询网卡的速度(带宽)
需求描述: 今天一同事要整理测试环境的主机硬件配置信息,需要提供网卡的速度的信息, 所以,就查询了下,在此记录下. 操作过程: 1.首先通过ip a命令查询主机的网口名称 [root@redhat6 ...
【干货】Linux 网卡绑定的相关知识和技巧
原理知识 Linux 多网卡的7种bond模式原理 Linux 多网卡绑定网卡绑定mode共有七种(0~6) bond0.bond1.bond2.bond3.bond4.bond5.bond6 常用 ...
服务器虚拟交换机到网卡不通,浅析虚拟化环境网卡绑定模式
作者:郭国华,新炬网络高级技术专家. 随着云计算的发展,虚拟化技术已普遍应用于各类型企业,同时虚拟化为服务器带来密集的网络吞吐压力已成为影响云计算发展的最大性能瓶颈之一,为了最大化提升主机网络性能,对 ...
redhat6.8链路聚合
centos 6.X 聚合链路 0.查看NetworkManager服务,停止NetworkManager服务.不做这一步很可能出问题 service NetworkManag ...
Linux操作系统RedHat6.5安装
1.说明安装Linux操作系统Red Hat 6.5, 安装镜像为rhel-server-6.5-x86_64-dvd.iso. 2.开始安装在BIOS里设置成从光驱启动, 服务器上电后会加载光驱 ...
RedHat6.7安装教程，图解，超详细
引言:最近项目组正在搭建服务器,为了与生产同步,所以最近一直在搞一些环境的事情,下面就给大家带来RedHat6.7的详细安装教程. 1.选择要安装的程序一般普通的安装直接选择第一个就可以了.下面图中有 ...
redhat6.3下安装ORACLE11.2.3RAC
主机环境:双节点,浪潮850 操作系统:REDHAT 6.3 内核版本:2.6.32-279.el6.x86_64 ORACLE数据库版本:11.2.0.3.0 网卡两块:bond0,bond0:1 ...

RedHat6.5网卡问题总结

RedHat6.5网卡问题总结相关推荐

最新文章

热门文章