SYSTEMD-DETECT-VIRT(1) systemd-detect-virt SYSTEMD-DETECT-VIRT(1)
NAME
systemd-detect-virt - Detect execution in a virtualized environment
SYNOPSIS
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:
Table 1. Known virtualization technologies (both VM, i.e. full hardware
virtualization, and container, i.e. shared kernel virtualization)
+----------+----------------+---------------------+
|Type | ID | Product |
+----------+----------------+---------------------+
| | 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 |
|VM | | 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 |
+----------+----------------+---------------------+
| | openvz | OpenVZ/Virtuozzo |
| +----------------+---------------------+
| | lxc | Linux container |
| | | implementation by |
| | | LXC |
| +----------------+---------------------+
| | lxc-libvirt | Linux container |
| | | implementation by |
|container | | 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.
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
EXIT STATUS
If a virtualization technology is detected, 0 is returned, a non-zero
code otherwise.
SEE ALSO
systemd(1), systemd-nspawn(1)
systemd 219 SYSTEMD-DETECT-VIRT(1)
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