My memory is getting worse and worse. It's a pure record. I've done it before and forgot it for a while. In addition, CentOS is my most commonly used one, but many friends prefer it ubuntu Or debian, meet one today ubuntu18.04 Change the IP address of the system's virtual machine. It is not good to change/etc/network/interfaces normally. It is recorded here to avoid the trouble of going to bing every time.
Ubuntu 18.04 uses Netplan to configure IP addresses, so you need to modify the/etc/netplan/* file.
The figure above shows the modification of/etc/network/interfaces. After that, restart to check that the new IP is not accessible. Use the ifconfig command to check that the old IP is still the same. Next, modify the yaml file under/etc/netplan/. The file name may be different.
Modify the addresses and gateways in the file, save them after completion, and then sudo netplan apply the configuration.
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