Rename CentOS multi-nic Configuration

Rename CentOS multi-nic Configuration

I have installed three NICs in CentOS7, but the name is in the enoxxxxx format, which makes my obsessive *** seat very uncomfortable, the following describes how to configure the NIC and rename it to ethx.

Prerequisites:

1. view the NIC UUID

# Nmcli con show

Name UUID Type Device

Eth1 dfc9199c-7b47-4209-a396-109bf44e683a 802-3-ethernet eth1

Eth2 020d86aa-548f-49c2-9cb0-f6cfffdb8219 802-3-ethernet eth2

Eth0 a5e6ae5c-dd71-48be-b374-ad64121bd785 802-3-ethernet eth0

2. View Nic Information

# Nmcli device show [device name] example:

# Nmcli device show eth0

GENERAL. device: eth0

GENERAL. Type: ethernet

GENERAL. Hard Disk: 00: 0C: 29: 94: C8: 08

GENERAL. MTU: 1500

GENERAL. Status: 100 (connected)

GENERAL. CONNECTION: eth0

GENERAL.CON-PATH:/org/freedesktop/NetworkManager/ActiveConnection/0

WIRED-PROPERTIES. Container: On

IP4. Address [1]: 192.168.66.4/24

IP4. Gateway: 192.168.66.1

IP4.DNS [1]: 202.106.46.151

IP6. Address [1]: fe80: 20c: 29ff: fe94: c808/64

IP6. Gateway:

Enter the subject

Go to the NIC configuration file directory

# Cd/etc/sysconfig/network-scripts

Rename the NIC

# Mv ifcfg-eno16777736 ifcfg-eth0

Modify the NIC information, not very familiar friends please refer to my another detailed explanation of http://baoer7758.blog.51cto.com/8187563/1638229

# Vim ifcfg-eth0.

HWADDR = 00: 0c: 29: 94: c8: 08

TYPE = Ethernet

BOOTPROTO = static

DEFROUTE = yes

PEERDNS = yes

PEERROUTES = yes

20174_failure_fatal = yes

NAME = eth0

UUID = a5e6ae5c-dd71-48be-b374-ad64121bd785

# DEVICE = eno16777736

ONBOOT = yes

IPADDR = 192.168.66.4

NETMASK = 255.255.255.0

GATEWAY = 192.168.66.1

DNS1 = 202.106.46.151

# DEVICE = eth0

Copy the configuration file two copies as the configuration file for the other two NICs

# Cp ifcfg-eth0 ifcfg-eth1

# Cp ifcfg-eth0 ifcfg-eth2

Edit and modify:

# Vim ifcfg-eth1.

HWADDR = 00: 0c: 29: 94: c8: 12

TYPE = Ethernet

BOOTPROTO = static

DEFROUTE = yes

PEERDNS = yes

PEERROUTES = yes

20174_failure_fatal = yes

NAME = eth1

UUID = dfc9199c-7b47-4209-a396-109bf44e683a

ONBOOT = yes

IPADDR = 192.168.67.4

NETMASK = 255.255.255.0

# DEVICE = eth0

Edit and modify

# Vim ifcfg-eth2.

HWADDR = 00: 0c: 29: 94: c8: 1c

TYPE = Ethernet

BOOTPROTO = static

DEFROUTE = yes

PEERDNS = yes

PEERROUTES = yes

20174_failure_fatal = yes

NAME = eth2

UUID = 020d86aa-548f-49c2-9cb0-f6cfffdb8219

# DEVICE = eno16777736

ONBOOT = yes

IPADDR = 192.168.68.4

NETMASK = 255.255.255.0

# DEVICE = eth0

Start to rename the configuration, not very knowledgeable friends please refer to my another detailed explanation http://baoer7758.blog.51cto.com/8187563/1638229

# Vi/etc/sysconfig/grub

GRUB_TIMEOUT = 5

GRUB_DEFAULT = saved

GRUB_DISABLE_SUBMENU = true

GRUB_TERMINAL_OUTPUT = "console"

GRUB_CMDLINE_LINUX = "rd. lvm. lv = centos/root rd. lvm. lv = centos/swap crashkernel = autoNet. ifnames = 0 biosdevname = 0 net. ifnames = 1 biosdevname = 1 net. ifnames = 2 biosdevname = 2 rhgb quiet "// bold to add content

GRUB_DISABLE_RECOVERY = "true"

Reload to startup

# Grub2-mkconfig-o/boot/grub2/grub. cfg

Generating grub configuration file...

Found linux image:/boot/vmlinuz-3.10.0-229.el7.x86_64

Found initrd image:/boot/initramfs-3.10.0-229.el7.x86_64.img

Found linux image:/boot/vmlinuz-0-rescue-9bede79b46bd4e9696b92a4ec68a97b1

Found initrd image:/boot/initramfs-0-rescue-9bede79b46bd4e9696b92a4ec68a97b1.img

Done

Restart system reboot

View Nic Information

# Ifconfig

Eth0: flags = 4163 <UP, BROADCAST, RUNNING, MULTICAST> mtu 1500

Inet 192.168.66.4 netmask 255.255.255.0 broadcast 192.168.66.255

Inet6 fe80: 20c: 29ff: fe94: c808 prefixlen 64 scopeid 0x20 <link>

Ether 00: 0c: 29: 94: c8: 08 txqueuelen 1000 (Ethernet)

RX packets 690 bytes 69262 (67.6 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 488 bytes 65725 (64.1 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

Eth1: flags = 4163 <UP, BROADCAST, RUNNING, MULTICAST> mtu 1500

Inet 192.168.67.4 netmask 255.255.255.0 broadcast 192.168.67.255

Inet6 fe80: 20c: 29ff: fe94: c812 prefixlen 64 scopeid 0x20 <link>

Ether 00: 0c: 29: 94: c8: 12 txqueuelen 1000 (Ethernet)

RX packets 129 bytes 15944 (15.5 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 26 bytes 3927 (3.8 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

Eth2: flags = 4163 <UP, BROADCAST, RUNNING, MULTICAST> mtu 1500

Inet 192.168.68.4 netmask 255.255.255.0 broadcast 192.168.68.255

Inet6 fe80: 20c: 29ff: fe94: c81c prefixlen 64 scopeid 0x20 <link>

Ether 00: 0c: 29: 94: c8: 1c txqueuelen 1000 (Ethernet)

RX packets 127 bytes 15613 (15.2 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 25 bytes 3609 (3.5 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

Loop txqueuelen 0 (Local Loopback)

RX packets 4 bytes 420 (420.0 B)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 4 bytes 420 (420.0 B)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0