Shulou(Shulou.com)06/01 Report--

1 、 nmcli con

[root@localhost ~] # nmcli con

NAME UUID TYPE DEVICE

Enp2s3 392f1079-f6eb-af36-31cb-9ce552231745 802-3-ethernet enp2s3

Enp2s0 8c6fd7b1-ab62-a383-5b96-46e083e04bb1 802-3-ethernet enp2s0

2. Open / etc/sysconfig/network-scripts/ifcfg-enp2s0 file

TYPE=Ethernet

BOOTPROTO=dhcp

NAME=enp2s0

UUID=00eaabe5-1f75-4c01-a21f-79bf9c76d496

DEVICE=enp2s0

ONBOOT=yes

Update the UUID of this document with the UUID corresponding to the DEVICE name in step 1.

Description:

(1) in general, the default UUID value of network equipment does not match the actual DEVICE and needs to be updated with the actual UUID.

(2) the ONBOOT entry is set to yes.

The updated file is:

[root@localhost ~] # cat / etc/sysconfig/network-scripts/ifcfg-enp2s0

TYPE=Ethernet

BOOTPROTO=dhcp

NAME=enp2s0

UUID=8c6fd7b1-ab62-a383-5b96-46e083e04bb1

DEVICE=enp2s0

ONBOOT=yes

3. Network card information

[root@localhost ~] # dmesg | grep-in eth

554: [2.134579] e1000 000000 00:0c:29:9c:f8:d5 02 eth0: (PCI:66MHz:32-bit) 00:0c:29:9c:f8:d5

555: [2.134588] e1000 000000 PRO/1000 Network Connection 02 eth0: Intel (R)

565: [2.561570] e1000 000000 00:0c:29:9c:f8:df 02 eth2: (PCI:66MHz:32-bit) 00:0c:29:9c:f8:df

566: [2.561575] e1000 000000 PRO/1000 Network Connection 02 eth2 03.0: Intel (R)

567: [2.568309] systemd-udevd [238]: renamed network interface eth2 to enp2s3

568: [2.578203] systemd-udevd [240]: renamed network interface eth0 to enp2s0

4. Change the name of the network card-from enp2s0 to eth0

[root@localhost ~] # cat / etc/default/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=auto rhgb quiet"

GRUB_DISABLE_RECOVERY= "true"

Modify the GRUB_CMDLINE_LINUX in grub and append the statement "net.ifnames=0 biosdevname=0".

Then execute # grub2-mkconfig-o / boot/grub2/grub.cfg

5. Restart network service.

Servie network restart

6. CentOS7 mini version does not have ifconfig and other tools. When the system connection to the public network is smooth, root executes the following command to install the ifconfig tool, as follows:

# yum install-y net-tools\ *

7. Garbled code problem

Export LANG=zh_CN.GBK

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