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Set Static IP on AlmaLinux Servers: Easy Step-by-Step Guide

August 16, 2025

 

 

Configuring a static IP address on AlmaLinux servers is essential for maintaining consistent network communication. Unlike dynamic IP addresses that change over time, a static IP allows for reliable connections, making it ideal for servers hosting websites, applications, or services. This guide will walk you through the steps necessary to set a static IP address on your AlmaLinux server.

Prerequisites

Before diving into the configuration process, ensure you have:

  • An AlmaLinux server set up and accessible.
  • Administrative privileges (root access) on the server.
  • Basic knowledge of Linux command line and networking.

Step-by-Step Guide

1. Identify Your Network Interface

The first step is to identify the network interface you want to configure. Common network interfaces in Linux are usually named eth0, ens33, or similar. You can find your active network interfaces by using the following command:

ip addr

Look for the interface connected to your network. For this guide, we’ll assume the interface is eth0.

2. Backup Existing Network Configuration

Before making any changes, it’s a good practice to back up the existing network configuration file:

cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0.bak

3. Modify the Network Configuration

Now, you need to edit the configuration file for your network interface. Use your preferred text editor, such as nano or vi:

nano /etc/sysconfig/network-scripts/ifcfg-eth0

In this file, locate the following lines and adjust them according to your network settings:

  • BOOTPROTO: Change this from dhcp to none.
  • ONBOOT: Ensure this is set to yes.
  • IPADDR: Set this to the static IP address you intend to use.
  • NETMASK: Specify the subnet mask (commonly 255.255.255.0).
  • GATEWAY: Enter the IP address of your network’s gateway.
  • DNS1, DNS2: Add your preferred DNS servers.

Here’s how your configuration might look:

TYPE=Ethernet
BOOTPROTO=none
NAME=eth0
DEVICE=eth0
ONBOOT=yes
IPADDR=192.168.1.100
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
DNS1=8.8.8.8
DNS2=8.8.4.4

4. Restart the Network Service

After saving your changes, restart the network service to apply the static IP configuration:

systemctl restart network

Alternatively, you can reboot the server, but restarting the service is usually quicker.

5. Verify Your Changes

To ensure that your static IP address has been set correctly, use the following command again:

ip addr

You should see your configured static IP address associated with the correct network interface. Additionally, you can test your connectivity by pinging a known external address:

ping -c 4 google.com

Troubleshooting Tips

If things don’t seem to work after setting the static IP, consider the following troubleshooting steps:

  • Double-check that the IP address you’ve set is not already in use by another device on the network.
  • Ensure that your firewall settings allow traffic through the required ports.
  • Check the network cables and connections if the server is not responding.

Conclusion

Setting a static IP on AlmaLinux servers is a straightforward process that affords stability and reliability for your network services. By following the outlined steps, you can ensure your server has a consistent address, improving accessibility for users and applications. Regularly review your server’s networking configuration to adapt to any changes in your infrastructure. With these best practices in place, you can maintain a robust network environment for your applications and users.

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