IP address and DNS configuration in Linux

In Linux, the IP address and DNS configuration methods-Linux Enterprise Application-Linux server application information are described as follows. This article uses RedHatLinux9.0 for testing.

Method 1: Use the ifconfig command

For example, ifconfig eth0 192.168.0.200 netmask 255.255.255.0

This method is only valid at the time. After the system is restarted, it becomes invalid. You do not need to reactivate the NIC.

Method 2:

1. Edit "/etc/sysconfig/network-scripts/ifcfg-eth0"

After the IP address is changed, save and exit.

2. Use ifdown eth0 and ifup eth0 to reactivate the eth0.