KVM / QEMU Cheatsheet

kvm_cheatsheet.sh

# List System(s)
virsh -c qemu:///system list
virsh list                # List running
virsh list --all          # List all

# Open guest VM console
virsh console <instance> 

# Control specific instance
virsh start <instance>
virsh shutdown <instance>
virsh destroy <instance>
virsh suspend <instance>
virsh resume <instance>



## Install the Virtualization groups:
$ yum grouplist | grep -i virt
  Virtualization
  Virtualization Client
  Virtualization Platform
  Virtualization Tools

$ yum grouplist | grep -i virt | while read line
  do
    yum -y groupinstall "${line}"
  done
Create another LV for images:
$ lvcreate -L 200g -n ignite vg00
$ mkfs.ext4 /dev/vg00/ignite
$ mkdir -p -m 755 /ignite
## // Edit fstab
  /dev/mapper/vg00-ignite /ignite  ext4    defaults  1 2
$ mount /ignite
$ mkdir -p -m 755 /ignite/images
$ chcon --reference /var/lib/libvirt/images /ignite/images
$ rmdir /var/lib/libvirt/images
$ ln -s /ignite/images /var/lib/libvirt/images



# Define instances
virsh dumpxml <instance> >dump.xml
virsh create dump.xml   # Create from XML
virsh edit <instance>
virsh undefine <instance>

virsh blockresize <instance> --path vda --size 100G

virsh dominfo
virsh vcpuinfo
virsh nodeinfo

virsh quit   # Leave CLI