Step‑by‑Step Guide to Configure Dynamic/Static IP and Hostname on Linux

Linux IP and Gateway Configuration

Purpose: enable a virtual machine to access the network.

1. Configure Dynamic IP (IP changes with environment)

Open the VM and edit the interface file: vi /etc/sysconfig/network-scripts/ifcfg-ens33 Press i to edit, change ONBOOT=yes to enable the interface, then exit and save with :wq.

Restart the network: service network restart Check the assigned address: ip addr Test connectivity: ping www.baidu.com Use Ctrl + C to stop the ping.

2. Configure Static IP

Edit the same file and set the boot protocol to static: vi /etc/sysconfig/network-scripts/ifcfg-ens33 Change BOOTPROTO=static. Obtain the subnet IP and mask from VMware NAT settings, then configure the following parameters in the file: IPADDR0 – an address in the same subnet (e.g., 192.168.56.100) GATEWAY0 – the gateway shown in the virtual network editor DNS1 – a DNS server (e.g., 8.8.8.8, 223.5.5.5, etc.)

Save and exit, then restart the network: service network restart Verify the configuration: ip addr Test connectivity:

ping www.baidu.com

3. Set Hostname

Edit the hostname file to replace localhost.localdomain with the desired name: vi /etc/hostname Then edit the hosts file to map the new hostname to the loopback address: vi /etc/hosts Reboot the virtual machine to apply the changes.

After these steps the Linux VM will have a configured IP address (dynamic or static), proper gateway and DNS settings, and a custom hostname.