Proxmox QEMU guest agent installation

Published by Tobias Hofmann on

2 min read

After installing a new VM guest on Proxmox you may see in the overview page of the host that no guest agent is configured.

In the options section the guest agent is listed das disabled.

Setting up the guest agent is an optional task. The VM runs perfectly fine without a guest agent. The Proxmox documentation explains why it is a good idea to configure one and what are its benefits. To enable the QEMU guest agent, you have to prepare the VM and install the guest agent application on it.

Guest VM: Install QEMU guest agent

The guest agent is part of most distributions, including OpenSUSE:

Debian: apt-get install qemu-guest-agent
RedHat: yum install qemu-guest-agent
OpenSUSE: zypper install qemu-guest-agent

This should install and configure the agent. You don’t have to do anything more.

Proxmox: enable QEMU guest agent for the guest VM

Shut down the guest VM. Go to options, select the QEMU Guest Agent entry and edit the value. Enable the agent.

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Result

You have to start the guest VM. A reboot is not enough. Shutdown & Start.

Setup QEMU guest agent service

The QEMU guest agent must be running inside the guest VM for Proxmox to use it. After installing the package, the agent is configured to run automatically. Check if the service is running using systemctl. For OpenSUSE, the output should show a running qemu-ga service.

systemctl status show

qemu-ga@virtio\x2dports-org.qemu.guest_agent.0.service loaded active running QEMU Guest Agent

Proxmox : Validate configuration

After enabling QEMU guest agent support and having the service installed and running inside a guest VM, Proxmox can now communicate with the agent.

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Tobias Hofmann

Doing stuff with SAP since 1998. Open, web, UX, cloud. I am not a Basis guy, but very knowledgeable about Basis stuff, as it's the foundation of everything I do (DevOps). Performance is king, and unit tests is something I actually do. Developing HTML5 apps when HTML5 wasn't around. HCP/SCP user since 2012, NetWeaver since 2002, ABAP since 1998.

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