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 and can be used to limit what types of virtualization are detected. When executed without 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 parallels Parallels Desktop, Parallels Server 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-nspawn1 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 is passed). Options The following options are understood: Only detects container virtualization (i.e. shared kernel virtualization). Only detects VM virtualization (i.e. full hardware virtualization). Detect whether invoked in a chroot2 environment. In this mode no output is written, but the return value indicates whether the process was invoked in a chroot() environment or not. 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 systemd1, systemd-nspawn1, chroot2