Lguest: A simple virtualization platform for Linux
Wed, 20 Feb 2008 16:00:00 GMT
The Linux kernel has merged three hypervisors into its mainline tree, starting with KVM in 2.6.20, and continuing with Xen and lguest in the 2.6.23 release of the kernel. Hypervisors let users run multiple operating systems on a host system. Lguest is the simplest of the three in terms of usability and implementation, which makes it a good candidate for helping you learn how virtualization works.
I just started a new semester and I started my UNIX class yesterday. I've already decided to use python along with my learning process but what I really want to use with it is Kali as my UNIX/Linux platform to learn off of since I already wanted to learn Cyber Sec. anyways. I just wanted to know if... (12 Replies)
I'm looking for a really simple to use lightweight database. Ideally something open-source that stores data in a (semi-) human-readable format, in case the software isn't working.
Something cross-platform enough that I can use it on my Linux machine, my Mac, or stick it on a USB stick and... (2 Replies)
Hi All,
Is there a commercially available version of Linux which will run on a DEC/Digital/HP Alpha platform. Specifically a AlphaStation 200 4/166. I am currently running VMS 8.3 on the machine but the HP license conditions are encouraging me to change the OS.
Thanks and Regards,
Ron... (4 Replies)
I need you help please,
I want to use the libgeom library on the Linux platform in order to use the geom_stats_snapshot_get function.
But, I can't find this library for linux platform.
If someone can help me or give me the equivalent of this library on linux.
Thank you again. (4 Replies)
I've been a LAMP developer for years and am considering switching gears toward system security and virtualization - I know they are quite different goals.
What is the fastest way to get to that goal? I am going through Linux+ CBTs now which will form a basis from which to grow. After that,... (1 Reply)
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
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, |
| | | without KVM |
| +----------------+--------------------------------------+
| | kvm | Linux KVM kernel virtual machine, |
| | | with whatever software, except |
| | | Oracle Virtualbox |
| +----------------+--------------------------------------+
| | 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), |
| | | for legacy and KVM |
| | | hypervisor |
| +----------------+--------------------------------------+
| | 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
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.
--private-users
Detect whether invoked in a user namespace. In this mode, no output is written, but the return value indicates whether the process was
invoked inside of a user namespace or not. See user_namespaces(7) for more information.
-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), chroot(2), namespaces(7)systemd 237 SYSTEMD-DETECT-VIRT(1)