Sometimes we need to set local ip under rescue mode Centos because we need to reinstall kernel. It is basically the same as this article, just this time I create a simple bash script in toort directory. This is only for my note.
nano -w localip.sh
#!/bin/bash route -n ip addr add dev enp6s0 192.168.0.22/24 ip route replace default via 192.168.0.1 route -n