Know CentOS7 IP address

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LinkSprite Vision Sense VMS runs on Centos 7.9, and Centos minimal installation is recommended. After the bare minimal installation, and the first time reboot, we can use the command:

$ip addr

to find out the IP address.

We found that sometimes, the IP is not assigned by the router.

We can use 

$sudo dhclient

to manually obtain the IP address. If successfully, that means we need to configure automatically to obtain IP address by:

vim /etc/sysconfig/network-scripts/ifcfg-enp0s31f6 

and change ONBOOT=yes