systemd-detect-virt

systemd
Developer Lennart Poettering lennart@poettering.net
systemd-detect-virt 1
systemd-detect-virt Detect execution in a virtualized environment
`systemd-detect-virt OPTIONS`

## Description

`systemd-detect-virt` detects execution in a virtualized environment. It identifies the virtualization technology and can distinguish full VM virtualization from container virtualization. `systemd-detect-virt` exits with a return value of 0 (success) if a virtualization technology is detected, and non-zero (error) otherwise. By default any type of virtualization is detected, and the options `--container` and `--vm` can be used to limit what types of virtualization are detected.

When executed without `--quiet` will print a short identifier for the detected virtualization technology. The following technologies are currently identified:

Known virtualization technologies (both VM, i.e. full hardware virtualization, and container, i.e. shared kernel virtualization)

Type | ID | Product
--- | --- | ---
VM | `qemu` | QEMU software virtualization
`kvm` | Linux KVM kernel virtual machine
`zvm` | s390 z/VM
`vmware` | VMware Workstation or Server, and related products
`microsoft` | Hyper-V, also known as Viridian or Windows Server Virtualization
`oracle` | Oracle VM VirtualBox (historically marketed by innotek and Sun Microsystems)
`xen` | Xen hypervisor (only domU, not dom0)
`bochs` | Bochs Emulator
`uml` | User-mode Linux
container | `openvz` | OpenVZ/Virtuozzo
`lxc` | Linux container implementation by LXC
`lxc-libvirt` | Linux container implementation by libvirt
`systemd-nspawn` | systemd's minimal container implementation, see systemd-nspawn 1
`docker` | Docker container manager

If multiple virtualization solutions are used, only the "innermost" is detected and identified. That means if both VM virtualization and container virtualization are used in conjunction, only the latter will be identified (unless `--vm` is passed).

## Options

The following options are understood:

`-c`
`--container`

  Only detects container virtualization (i.e. shared kernel virtualization).

`-v`
`--vm`

  Only detects VM virtualization (i.e. full hardware virtualization).

`-q`
`--quiet`

  Suppress output of the virtualization technology identifier.

## Exit status

If a virtualization technology is detected, 0 is returned, a non-zero code otherwise.

## See Also

systemd 1, systemd-nspawn 1