The article gives the steps to install the QEMU guest agent. At Bobcares, with our Server Management Services, we can handle your server-related issues.

How to install the QEMU guest agent?

We can use Qemu to create a VM within Linux. This allows users to use different machines and platforms from a single interface. It also allows for the creation of multiple hosts by the user. And acts as a tool to communicate details between the host and guest.

It works as a helper for the guest system so that users may send the host different types of details including IP addresses and other network details. It is set up on the guest system and used to carry out codes on the visitor.

The steps to set up the QEMU guest agent are as follows:

Repository Updation

We can use the below code to update the repository.

$ sudo apt update

Qemu and libvirt Setup

In order to set up Qemu and libvirt, we can use the below code:

$ sudo apt install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils

virt-manager Setup

Run the command below to complete the setup. The next thing we need to do is download the virtual manager, in which we’ll set up our VM.

$ sudo apt install virt-manager

Directory Creation

1. Firstly, we’ve to create a directory using the below code:

$ sudomkdir-p/var/lib/libvirt/qemu/channel/target

2. Then change the owner using the below code:

$ sudochown-R libvirt-qemu:kvm /var/lib/libvirt/qemu/channel

libvirt file Modification

1. Using the given code, open the below file:

$ sudonano/etc/apparmor.d/abstractions/libvirt-qemu

2. Now a file will open. We’ve to add the below lines before saving it.

/var/lib/libvirt/qemu/channel/target/* rw,

Qemu Guest Agent Setup

We’ve to run the below code to set up the guest agent:

$ sudoapt-get install qemu-guest-agent

Virtual Device Creation

We can open the virtual manager and create a device after installing the agent. We can name the VM according to our choice. However, remember it as we need it later.

Virtual Device Terminal Access

1. Now, by running the code below, we’ll access the device terminal:

$ virsh

2. Here, we need to edit our device, so run the code below, and replace the name of the VM with Ubuntu.

virsh # edit ubuntu

3. There are several options available here, so choose the first that opens a file where we must paste the lines below:

<channel type="unix">
<sourcemode="bind"/>
<target type="virtio"name="org.qemu.guest_agent.0"/>
</channel>

4. Simply save the file after pasting the lines.

5. We can now restart the VM. Then type the below codes into the virsh console to get the IP address:

virsh # qemu-agent-command ubuntu20.04 '{"execute":"guest-network-get-interfaces"}'

6. Finally, the qemu guest agent starts running on our systems.

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Conclusion

In this post, we give the steps to install the qemu guest agent on the computers and also give the steps for setting up the prerequisites like qemu-kvm, libvirt, and virt-manager.