The guest agent is supported in qemu versions v0.15.0-rc0-413-g957f1f9 or later. Build the guest agent binary on your guest Always specifying both allows you to have a standardized libvirt XML configuration regardless of underlying guest support. The MOM Collector will automatically connect to whichever of these channels is active. Note: In this example we create both an ISA-serial channel and a virtio-serial channel. Redefine/restart the domains to ensure the changes take effect. Place the following stanza into the devices section of each domain configuration file: Modify your guest domain.xml files to create the communication channels:
Remove any existing name-to-ip setting from mom.conf.No need to map guest names to guest IP addressesĬonfiguring MOM to use the qemu guest agent involves a few simple steps on the host and guest: Host setupĭownload the latest version of MOM from github and install it on your host.No need for host->guest network connectivity.More information about the guest agent is here.Īs of today, Memory Overcommitment Manager (MOM) can use the qemu guest agent for guest statistics collection. Using this mechanism, it is now possible to reliably power down a guest, read and write files, and perform filesystem snapshotting. Programs on a KVM host can now talk to guests using a virtual hardware channel (either virtio-serial or an emulated ISA serial port).
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