1SYSTEMD-DETECT-VIRT(1) systemd-detect-virt SYSTEMD-DETECT-VIRT(1)
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6 systemd-detect-virt - Detect execution in a virtualized environment
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9 systemd-detect-virt [OPTIONS...]
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12 systemd-detect-virt detects execution in a virtualized environment. It
13 identifies the virtualization technology and can distinguish full
14 machine virtualization from container virtualization.
15 systemd-detect-virt exits with a return value of 0 (success) if a
16 virtualization technology is detected, and non-zero (error) otherwise.
17 By default, any type of virtualization is detected, and the options
18 --container and --vm can be used to limit what types of virtualization
19 are detected.
20 When executed without --quiet will print a short identifier for the
22 detected virtualization technology. The following technologies are
23 currently identified:
24 Table 1. Known virtualization technologies (both VM, i.e. full hardware
26 virtualization, and container, i.e. shared kernel virtualization)
27 ┌──────────┬────────────────┬─────────────────────┐
28 │Type │ ID │ Product │
29 ├──────────┼────────────────┼─────────────────────┤
30 │VM │ qemu │ QEMU software │
31 │ │ │ virtualization, │
32 │ │ │ without KVM │
33 │ ├────────────────┼─────────────────────┤
34 │ │ kvm │ Linux KVM kernel │
35 │ │ │ virtual machine, │
36 │ │ │ with whatever │
37 │ │ │ software, except │
38 │ │ │ Oracle Virtualbox │
39 │ ├────────────────┼─────────────────────┤
40 │ │ zvm │ s390 z/VM │
41 │ ├────────────────┼─────────────────────┤
42 │ │ vmware │ VMware Workstation │
43 │ │ │ or Server, and │
44 │ │ │ related products │
45 │ ├────────────────┼─────────────────────┤
46 │ │ microsoft │ Hyper-V, also known │
47 │ │ │ as Viridian or │
48 │ │ │ Windows Server │
49 │ │ │ Virtualization │
50 │ ├────────────────┼─────────────────────┤
51 │ │ oracle │ Oracle VM │
52 │ │ │ VirtualBox │
53 │ │ │ (historically │
54 │ │ │ marketed by innotek │
55 │ │ │ and Sun │
56 │ │ │ Microsystems), for │
57 │ │ │ legacy and KVM │
58 │ │ │ hypervisor │
59 │ ├────────────────┼─────────────────────┤
60 │ │ xen │ Xen hypervisor │
61 │ │ │ (only domU, not │
62 │ │ │ dom0) │
63 │ ├────────────────┼─────────────────────┤
64 │ │ bochs │ Bochs Emulator │
65 │ ├────────────────┼─────────────────────┤
66 │ │ uml │ User-mode Linux │
67 │ ├────────────────┼─────────────────────┤
68 │ │ parallels │ Parallels Desktop, │
69 │ │ │ Parallels Server │
70 │ ├────────────────┼─────────────────────┤
71 │ │ bhyve │ bhyve, FreeBSD │
72 │ │ │ hypervisor │
73 │ ├────────────────┼─────────────────────┤
74 │ │ qnx │ QNX hypervisor │
75 ├──────────┼────────────────┼─────────────────────┤
76 │Container │ openvz │ OpenVZ/Virtuozzo │
77 │ ├────────────────┼─────────────────────┤
78 │ │ lxc │ Linux container │
79 │ │ │ implementation by │
80 │ │ │ LXC │
81 │ ├────────────────┼─────────────────────┤
82 │ │ lxc-libvirt │ Linux container │
83 │ │ │ implementation by │
84 │ │ │ libvirt │
85 │ ├────────────────┼─────────────────────┤
86 │ │ systemd-nspawn │ systemd's minimal │
87 │ │ │ container │
88 │ │ │ implementation, see │
89 │ │ │ systemd-nspawn(1) │
90 │ ├────────────────┼─────────────────────┤
91 │ │ docker │ Docker container │
92 │ │ │ manager │
93 │ ├────────────────┼─────────────────────┤
94 │ │ rkt │ rkt app container │
95 │ │ │ runtime │
96 └──────────┴────────────────┴─────────────────────┘
97 If multiple virtualization solutions are used, only the "innermost" is
99 detected and identified. That means if both machine and container
100 virtualization are used in conjunction, only the latter will be
101 identified (unless --vm is passed).
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104 The following options are understood:
105 -c, --container
107 Only detects container virtualization (i.e. shared kernel
108 virtualization).
109 -v, --vm
111 Only detects hardware virtualization).
112 -r, --chroot
114 Detect whether invoked in a chroot(2) environment. In this mode, no
115 output is written, but the return value indicates whether the
116 process was invoked in a chroot() environment or not.
117 --private-users
119 Detect whether invoked in a user namespace. In this mode, no output
120 is written, but the return value indicates whether the process was
121 invoked inside of a user namespace or not. See user_namespaces(7)
122 for more information.
123 -q, --quiet
125 Suppress output of the virtualization technology identifier.
126 --list
128 Output all currently known and detectable container and VM
129 environments.
130 -h, --help
132 Print a short help text and exit.
133 --version
135 Print a short version string and exit.
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138 If a virtualization technology is detected, 0 is returned, a non-zero
139 code otherwise.
140
142 systemd(1), systemd-nspawn(1), chroot(2), namespaces(7)
143systemd 239 SYSTEMD-DETECT-VIRT(1)