文档课题：centos 7.9修改网卡名.

1、系统检查

[root@liujun ~]# cat /etc/*release

CentOS Linux release 7.9.2009 (Core)

NAME="CentOS Linux"

VERSION="7 (Core)"

ID="centos"

ID_LIKE="rhel fedora"

VERSION_ID="7"

PRETTY_NAME="CentOS Linux 7 (Core)"

ANSI_COLOR="0;31"

CPE_NAME="cpe:/o:centos:centos:7"

HOME_URL="https://www.centos.org/"

BUG_REPORT_URL="https://bugs.centos.org/"

 

CENTOS_MANTISBT_PROJECT="CentOS-7"

CENTOS_MANTISBT_PROJECT_VERSION="7"

REDHAT_SUPPORT_PRODUCT="centos"

REDHAT_SUPPORT_PRODUCT_VERSION="7"

 

CentOS Linux release 7.9.2009 (Core)

CentOS Linux release 7.9.2009 (Core)

[root@liujun ~]# ifconfig

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.133.120  netmask 255.255.255.0  broadcast 192.168.133.255

        inet6 fe80::8859:131d:a761:bc7a  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:98:c5:5f  txqueuelen 1000  (Ethernet)

        RX packets 134  bytes 29118 (28.4 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 136  bytes 21093 (20.5 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

 

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536

        inet 127.0.0.1  netmask 255.0.0.0

        inet6 ::1  prefixlen 128  scopeid 0x10<host>

        loop  txqueuelen 1000  (Local Loopback)

        RX packets 48  bytes 4080 (3.9 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 48  bytes 4080 (3.9 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

 

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500

        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255

        ether 52:54:00:a8:7c:6f  txqueuelen 1000  (Ethernet)

        RX packets 0  bytes 0 (0.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 0  bytes 0 (0.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

2、修改网卡名

2.1、grub文件

--编辑/etc/default/grub，加入“net.ifnames=0 biosdevname=0”到GRUB_CMDLINE_LINUX变量.

[root@liujun ~]# cat /etc/default/grub

GRUB_TIMEOUT=5

GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="crashkernel=auto spectre_v2=retpoline rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"

GRUB_DISABLE_RECOVERY="true"

[root@liujun ~]# sed -i 's/rhgb/net.ifnames=0 biosdevname=0 rhgb/' /etc/default/grub

2.2、70-persistent-net.rules文件

修改/etc/udev/rules.d/70-persistent-net.rules文件

--查接口mac地址。

[root@liujun ~]# ip link show

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000

    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000

    link/ether 00:0c:29:98:c5:5f brd ff:ff:ff:ff:ff:ff

3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default qlen 1000

    link/ether 52:54:00:a8:7c:6f brd ff:ff:ff:ff:ff:ff

4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN mode DEFAULT group default qlen 1000

link/ether 52:54:00:a8:7c:6f brd ff:ff:ff:ff:ff:ff

--MAC地址为00:0c:29:98:c5:5f，将MAC地址填入文件70-persistent-net.rules的ATTR中。

[root@liujun rules.d]# vi /etc/udev/rules.d/70-persistent-net.rules

添加如下：

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:98:c5:5f", ATTR{type}=="1", KERNEL=="ens*", NAME="ens37"

说明：需注意ATTR和NAME值。

2.3、ifcfg-ens33文件

--修改网卡配置文件

[root@liujun network-scripts]# pwd

/etc/sysconfig/network-scripts

[root@liujun network-scripts]# mv ifcfg-ens33 ifcfg-ens37

[root@liujun network-scripts]# vi ifcfg-ens37

TYPE=Ethernet

PROXY_METHOD=none

BROWSER_ONLY=no

BOOTPROTO=static

DEFROUTE=yes

IPV4_FAILURE_FATAL=no

IPV6INIT=yes

IPV6_AUTOCONF=yes

IPV6_DEFROUTE=yes

IPV6_FAILURE_FATAL=no

IPV6_ADDR_GEN_MODE=stable-privacy

NAME=ens37

UUID=e7191296-fd65-478d-936e-f43dc98f1745

DEVICE=ens37

ONBOOT=yes

IPADDR=192.168.133.120

DNS1=192.168.133.2

GATEWAY=192.168.133.2

PREFIX=24

说明：需修改DEVICE和NAME的名称为ens37.

3、重启系统

[root@liujun network-scripts]# reboot

[root@liujun ~]# ifconfig

ens37: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.133.120  netmask 255.255.255.0  broadcast 192.168.133.255

        inet6 fe80::e007:4abd:58d:5da3  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:98:c5:5f  txqueuelen 1000  (Ethernet)

        RX packets 35  bytes 5261 (5.1 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 58  bytes 10265 (10.0 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

 

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536

        inet 127.0.0.1  netmask 255.0.0.0

        inet6 ::1  prefixlen 128  scopeid 0x10<host>

        loop  txqueuelen 1000  (Local Loopback)

        RX packets 48  bytes 4080 (3.9 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 48  bytes 4080 (3.9 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

 

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500

        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255

        ether 52:54:00:a8:7c:6f  txqueuelen 1000  (Ethernet)

        RX packets 0  bytes 0 (0.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 0  bytes 0 (0.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

 

参考网址：http://blog.itpub.net/26736162/viewspace-2771463/