Linux Initialization configuration-----Network configuration

I. Setting up a Linux network

1) Set IP address at zero

Since CENTOS7 does not have the Ifconfig command by default, we first install net-tool so that we can use the Ifconfig command to view the IP address.

• Mount the System CD

[Email protected] ~]# mount/dev/cdrom/media/cdrom/

• Enter the CD-ROM installation package directory installation Net-tool

[Email protected] ~]# cd/media/cdrom/packages/

[Email protected] packages]# RPM-IVH net-tools-2.0-0.17.20131004git.el7.x86_64.rpm

Now we can use the Ifconfig command to set the 0 O'Clock IP address (does not take effect after reboot)

Let's look at the usage of ifconfig.

[Email protected] packages]# ifconfig-h
Usage:
Ifconfig [-A] [-v] [-s] <interface> [[<af>] <address>]

Here is an example

[Email protected] packages]# ifconfig eno16777736 192.168.1.1 255.255.255.0

Then check the IP address is 192.168.1.1

Note: Address will expire after restarting service

Two. Permanently modify the IP address (modify the network configuration file)

Nic configuration file in/etc/sysconfig/networ-script/ifcfg-NIC name

We use the VI editor to modify the contents of the content can be permanently modified

Finally restart the Network service

[root@localhost network-scripts]# systemctl Restart Network.service

If there is no error, the modification succeeds.

Linux Initialization configuration-----Network configuration