Add permanent route to Centos

When I was testing with a virtual machine today, I suddenly found that the Internet was disconnected. I remember that I had added a route before and restarted the network service. After careful consideration, it should be that the route to be added was temporary, the restart is gone, so I had the impulse to write it permanently. After reading some documents, as long as the/etc/sysconfig/network-scripts/route-eth0 since my system version is 5.4, there is no rout-etho file, so this file is created, the command is as follows:

Note: This must correspond to the NIC name.

Note: Add a CIDR Block
Note: add to a host
Note all networks, similar to default routes

 

 

Or you can change it to the following: