zoukankan      html  css  js  c++  java
  • 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  ]

  • 相关阅读:
    LeetCode-Cycle Detection,Find the Duplicate Number
    LeetCode-Symmetric Tree
    剑指offer-打印链表倒数第k个结点
    Http协议中Get和Post的区别
    ORDER BY 语句
    AND 和 OR 运算符
    WHERE 子句
    SQL SELECT DISTINCT 语句
    SQL SELECT 语句
    SQL DML 和 DDL
  • 原文地址:https://www.cnblogs.com/lcword/p/5916420.html
Copyright © 2011-2022 走看看