NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | SEE ALSO | COLOPHON

SYSTEMD-DETECT-VIRT(1)       systemd-detect-virt      SYSTEMD-DETECT-VIRT(1)

NAME         top

       systemd-detect-virt - Detect execution in a virtualized environment

SYNOPSIS         top

       systemd-detect-virt [OPTIONS...]

DESCRIPTION         top

       systemd-detect-virt detects execution in a virtualized environment.
       It identifies the virtualization technology and can distinguish full
       machine 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             │
       ├──────────┼────────────────┼─────────────────────┤
       │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     │
       │          ├────────────────┼─────────────────────┤
       │          │ parallels      │ Parallels Desktop,  │
       │          │                │ Parallels Server    │
       │          ├────────────────┼─────────────────────┤
       │          │ bhyve          │ bhyve, FreeBSD      │
       │          │                │ hypervisor          │
       ├──────────┼────────────────┼─────────────────────┤
       │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             │
       │          ├────────────────┼─────────────────────┤
       │          │ rkt            │ rkt app container   │
       │          │                │ runtime             │
       └──────────┴────────────────┴─────────────────────┘

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

OPTIONS         top

       The following options are understood:

       -c, --container
           Only detects container virtualization (i.e. shared kernel
           virtualization).

       -v, --vm
           Only detects hardware virtualization).

       -r, --chroot
           Detect whether invoked in a chroot(2) environment. In this mode,
           no output is written, but the return value indicates whether the
           process was invoked in a chroot() environment or not.

       -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         top

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

SEE ALSO         top

       systemd(1), systemd-nspawn(1), chroot(2)

COLOPHON         top

       This page is part of the systemd (systemd system and service manager)
       project.  Information about the project can be found at 
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have a bug
       report for this manual page, see 
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.  This
       page was obtained from the project's upstream Git repository 
       ⟨https://github.com/systemd/systemd.git⟩ on 2016-09-01.  If you dis‐
       cover any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org

systemd 231                                           SYSTEMD-DETECT-VIRT(1)