Linux Virtualization Operations

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Internal

Commands

virsh
virt-install guestmount guestunmount virt-builder virt-cat virt-filesystems virt-inspector
libguestfs virt-copy-in virt-copy-out virt-customize virt-df virt-diff virt-edit virt-format
virt-log virt-ls virt-make-fs virt-p2v virt-rescue virt-resize virt-sparsify virt-sysprep
virt-tar-out virt-tar-in virt-top virt-v2v virt-viewer virt-what virt-who virt-xml-validate
qemu-img

Virtualization Host Storage Operations

Storage Pool Operations

Storage Volume Operations

Virtualization Host Network Operations

Create a Guest Virtual Machine

Virtualization host storage and host-level networking must be configured as a prerequisite to creating guest virtual machines. Once storage pools and storage volumes are made available, and the networking is configured, guest virtual machines can be created with

virt-install

If the XML definition of a virtual machine is available, it can be created with:

virsh define

Start/Stop Guest VMs

   virsh start
   virsh shutdown

Connect to the Guest VM

   virsh console

Adding Storage to Guests

Adding Storage to Guests

Cloning a Guest VM

  • Shut down the guest with virsh shutdown.
  • Export the XML configuration with virsh dumpxml.
  • Copy the XML definition under a new name, conventionally the name of the guest being built.
  • Edit the XML as needed. Things you may want to change:
    • The name of the guest.
    • Remove the <uuid> line, a new UUID will be generated.
    • The amount of memory, specified as <memory>. Remove the <currentMemory> line.
    • The number of vCPUs allocated to the guest.
    • Remove the "cdrom" disk(s), if it is not going to be used.
  • Clone the virtual machine image with the new name.
  • Create any other storage volume that may be needed.
  • Define the guest with virsh define.