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KVM Virtualization Cookbook by Konstantin Ivanov

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When we create a virtual machine with libvirt, the QEMU process that is started exposes a monitoring socket that we can connect to and collect information about the guest.

Let's see how that looks for the KVM instance we've been using:

  1. Get the process information for the guest instance:
root@kvm:~# pgrep -lfa kvm132332 /usr/bin/qemu-system-x86_64 -name kvm1 -S -machine pc- i440fx-trusty,accel=kvm,usb=off -m 1024 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid bd167199-c1c4-de7e-4996-43a7f197e565 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/kvm1.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 ...

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