CentOS7修改網絡卡名稱

我在vmware workstation裡面安裝的centos7虛擬機器設定了2張網絡卡，網絡卡名稱預設為eno16777736、eno33554984：

[root@controller ~]# ip a 1: lo: mtu 65536 qdisc noqueue state unknown qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eno16777736: mtu 1500 qdisc pfifo_fast state up qlen 1000 link/ether 00:50:56:3a:78:ee brd ff:ff:ff:ff:ff:ff inet 192.168.128.85/24 brd 192.168.128.255 scope global eno16777736 valid_lft forever preferred_lft forever inet6 fe80::250:56ff:fe3a:78ee/64 scope link valid_lft forever preferred_lft forever 3: eno33554984: mtu 1500 qdisc pfifo_fast state up qlen 1000 link/ether 00:0c:29:72:41:10 brd ff:ff:ff:ff:ff:ff inet 10.10.10.10/24 brd 10.10.10.255 scope global eno33554984 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fe72:4110/64 scope link valid_lft forever preferred_lft forever

如果改為eth0、eth1，該如何操作呢？

1.修改配置

[root@controller ~]# vi /etc/default/grub

grub_cmdline_linux加上net.ifnames=0 biosdevname=0

grub_cmdline_linux="net.ifnames=0 biosdevname=0 crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"

grub2-mkconfig -o /boot/grub2/grub.cfg

[root@controller ~]# grub2-mkconfig -o /boot/grub2/grub.cfg generating grub configuration file ... found linux image: /boot/vmlinuz-3.10 .0-693.5 .2.el7.x86_64 found initrd image: /boot/initramfs-3.10 .0-693.5 .2.el7.x86_64.img found linux image: /boot/vmlinuz-3.10 .0-327.28 .3.el7.x86_64 found initrd image: /boot/initramfs-3.10 .0-327.28 .3.el7.x86_64.img found linux image: /boot/vmlinuz-3.10 .0-327.el7.x86_64 found initrd image: /boot/initramfs-3.10 .0-327.el7.x86_64.img found linux image: /boot/vmlinuz-0-rescue-0ff0e879cd2f443cb90ec9afa4d66dfb found initrd image: /boot/initramfs-0-rescue-0ff0e879cd2f443cb90ec9afa4d66dfb.img done

3.修改網絡卡名稱

[root@controller ~]# cd /etc/sysconfig/network-scripts/
[root@controller network-scripts]# vi ifcfg-eno16777736

修改為

name=eth0

device=eth0

[root@controller network-scripts]# mv ifcfg-eno16777736 ifcfg-eth0

同樣另外一張網絡卡改為eth1

4.重啟機器

發現通過ssh連線不到 192.168.128.85

進入vmware控制台檢視，還是顯示原網絡卡名稱，再檢視網路服務狀態，顯示failed

如何解決？

進入目錄/etc/udev/rules.d/

[root@controller ~]# cd /etc/udev/rules.d/

檢視 90-eno-pix.rules

# this file was automatically generated on systemd update
subsystem=="net", action=="add", drivers=="?*", attr=="00:50:56:3a:78:ee", name="eno16777736"
subsystem=="net", action=="add", drivers=="?*", attr=="00:0c:29:72:41:10", name="eno33554984"

看到還是之前的網絡卡名稱

刪掉此檔案，或者改為正確的網絡卡名稱，注意和mac對應，然後重啟機器

這次成功了

[root@controller ~]# ip a 1: lo: mtu 65536 qdisc noqueue state unknown qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: mtu 1500 qdisc pfifo_fast state up qlen 1000 link/ether 00:50:56:3a:78:ee brd ff:ff:ff:ff:ff:ff inet 192.168.128.85/24 brd 192.168.128.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fe80::250:56ff:fe3a:78ee/64 scope link valid_lft forever preferred_lft forever 3: eth1: mtu 1500 qdisc pfifo_fast state up qlen 1000 link/ether 00:0c:29:72:41:10 brd ff:ff:ff:ff:ff:ff inet 10.10.10.10/24 brd 10.10.10.255 scope global eth1 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fe72:4110/64 scope link valid_lft forever preferred_lft forever

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