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Home Operation and Maintenance CentOS Centos configuration IP address

Centos configuration IP address

Apr 14, 2025 pm 09:06 PM
centos subnet

Steps to configure IP address in CentOS: View the current network configuration: ip addr Edit the network configuration file: sudo vi /etc/sysconfig/network-scripts/ifcfg-eth0 Change the IP address: Edit IPADDR= Line to change the subnet mask and gateway (optional): Edit NETMASK= and GATEWAY= Line to restart the network service: sudo systemctl restart network verification IP address: ip addr

Centos configuration IP address

How to configure IP address in CentOS

Step 1: Check the current network configuration

Run the following command to view the current network configuration:

 <code>ip addr</code>

This command displays all network interfaces and their current configuration.

Step 2: Edit the network configuration file

Find the network interface to which you want to change the IP address. It is usually an Ethernet interface called eth0 . Edit the configuration file for this interface:

 <code>sudo vi /etc/sysconfig/network-scripts/ifcfg-eth0</code>

Step 3: Change the IP address

Find and edit the following line in the configuration file:

 <code>IPADDR=192.168.1.100</code>

Replace 192.168.1.100 with the required IP address.

Step 4: Change the subnet mask and gateway

You can also change the subnet mask and gateway as needed:

 <code>NETMASK=255.255.255.0 GATEWAY=192.168.1.1</code>

Step 5: Restart the network service

After making changes to the network configuration, you need to restart the network service to make the changes take effect:

 <code>sudo systemctl restart network</code>

Step 6: Verify IP Address

Verify the new IP address using the following command:

 <code>ip addr</code>

This command should display the network interface with the new IP address.

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