Today we’ll discuss how to change the IP address in Proxmox with just 3 steps. At Bobcares, with our Proxmox Support, we can handle your issues.

Overview

1. More on Proxmox
2. Steps to change IP address of Proxmox server
   • Lookup the current IP in Proxmox console
   • Change the IP of Proxmox node
   • Change the IP of Proxmox in hosts file
3. Benefits of Proxmox IP Address Change
4. Conclusion

More on Proxmox

We can run and manage virtual machines and containers with Proxmox, an open-source virtualization platform. It offers a scalable and adaptable virtualization solution by combining Linux Containers (LXC) and the KVM (Kernel-based Virtual Machine) hypervisor. Proxmox is appropriate for both small-scale deployments and big data centers because of its web-based interface, which makes it simple to develop, manage, and monitor virtualized environments.

Steps to change IP address of Proxmox server

We can change the Proxmox node IP address in three simple steps as given here:

1. Lookup the current IP in Proxmox console

To change IP address in Proxmox, go to the management console of Proxmox VE. We can access the console at https://IPaddress:8006/. We’ll see the server IP in the summary section.

Proxmox server IP address

To change the IP, go to the ‘proxmox node’ and choose option ‘Network’ and edit the ‘vmbr0’ section.

Edit ‘vmbr0’ to change IP address of Proxmox

2. Change the IP of Proxmox node

Enter the new IP address in the ‘Edit’ window and click ‘OK’. Here we’re changing the IP address from 172.17.4.45 to 172.17.5.45. The new IP address would be now shown in the ‘Network’ section:

New IP address shown in Proxmox

3. Change the IP of Proxmox in hosts file

However, the above IP change will not yet reflect in the main Summary section. For that, we edit the ‘/etc/hosts’ file in the server and change the IP address.

Change Proxmox IP in /etc/hosts

Once the /etc/hosts is updated, Logout and Login to the Proxmox VE management console to see the new IP listed. If it doesn’t show, reboot the machine and check.

New Proxmox IP address in Summary

Today we saw the steps to easily change a Proxmox node IP address. To change the IP address, we need to first ensure that the new IP is available and bound to the server.

Benefits of Proxmox IP Address Change

Changing the IP address of the Proxmox server can offer several benefits:

1. Network Reconfiguration: If the network infrastructure changes or if we need to integrate the Proxmox server into a different network segment, changing its IP address allows us to adapt to the new network configuration.

2. Security Enhancements: Changing the IP address can help improve security by avoiding IP address conflicts, limiting exposure to potential attacks, or implementing network segmentation strategies.

3. Improved Performance: In some cases, reconfiguring the IP address can lead to better network performance by optimizing routing paths or reducing network congestion.

4. Troubleshooting: Changing the IP address can be a troubleshooting step for resolving network connectivity issues or addressing conflicts with other devices on the network.

5. Compliance Requirements: In environments where specific IP address ranges or configurations are required to meet compliance standards, changing the IP address allows us to adhere to those requirements.

6. Administrative Convenience: Adjusting the IP address to align with the network addressing scheme or organizational conventions can simplify network management and administration tasks.

7. Disaster Recovery: Updating the IP address as part of disaster recovery planning ensures that the Proxmox server can be easily restored and integrated into the network in the event of a disaster or system failure.

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Conclusion

The gateway and the network interface for the new IP address should be mentioned correctly after checking the details in the server. Otherwise we’d get errors while adding the IP. The hostname and DNS changes should also be made in cases where they are applicable. If you’d like to know how to do it for your servers, we’d be happy to talk to you.