Learn how to troubleshoot the “KVM Error: No active connection to install on” in Ubuntu. Our KVM Support team is here to help you with your questions and concerns.

“KVM Error: No active connection to install on.” in Ubuntu

If you have been running into “Error: No active connection to install on”, it indicates trouble with the libvirt service. In other words, it means that our system cannot connect to the virtualization environment.

This can disrupt our KVM setup. Today, our Experts are going to help us identify and fix common causes of this problem.

Libvirt Service Not Running

First, we need to check the status of the libvirt service to see if it’s running:

sudo systemctl status libvirtd

In case it is not running, we can start the service with:

sudo systemctl start libvirtd

Furthermore, make sure it starts automatically at boot with this command:

sudo systemctl enable libvirtd

User Permissions

The user has to be part of the `libvirt` group in order to interact with the libvirt service. So, add the user to the group with:

sudo adduser user_name libvirt

We have to replace user_name with our actual username. Once we add the user, log out and log back in so the changes take effect.

Network Issues

In case we are using a network connection for virtualization, check if the network configuration is correct. This involves verifying that the network interface is up and running. Also, check firewall rules to ensure they are not blocking libvirt.

Libvirt Configuration

Furthermore, errors or incorrect settings in the libvirt configuration file can cause issues. So, check the file located at `/etc/libvirt/libvirtd.conf` for any problems. However, be careful when making changes to this file.

KVM Modules

Now, check if the necessary KVM modules are loaded. We can load the KVM module with:

sudo modprobe kvm

Also, check if the KVM module is listed in the `lsmod` output:

lsmod | grep kvm

Restart System

In some cases, rebooting the system can resolve underlying issues with the libvirt service and KVM setup.

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Conclusion

In brief, our Support Experts demonstrated how to troubleshoot the “KVM Error: No active connection to install on” in Ubuntu.