systemd-detect-virt − Detect execution in a virtualized environment
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systemd−detect−virt [OPTIONS...] |
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)
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).
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.
If a virtualization technology is detected, 0 is returned, a non−zero code otherwise.
systemd(1), systemd-nspawn(1)