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The OCI Image Format Project was split out from the Runtime Project into its own specification on March 23, 2016. [11] The image-spec is a software shipping container image format spec (OCI Image Format) that reached version 1.0.0 on July 19, 2017. [12]
Docker; Installable Live CD/USB: a hybrid ISO image which can be burned to either CD or USB [7] and used to install on both bare metal (I.e. a non-virtualized physical machine) and virtual machines, including VMware, Xen, XenServer, VirtualBox, and KVM. This image can also run live in non-persistent demo mode.
LXC was initially developed by IBM, as part of a collaboration between several parties looking to add namespaces to the kernel. [7] It provides operating system-level virtualization through a virtual environment that has its own process and network space, instead of creating a full-fledged virtual machine.
OS-level virtualization is an operating system (OS) virtualization paradigm in which the kernel allows the existence of multiple isolated user space instances, including containers (LXC, Solaris Containers, AIX WPARs, HP-UX SRP Containers, Docker, Podman), zones (Solaris Containers), virtual private servers (), partitions, virtual environments (VEs), virtual kernels (DragonFly BSD), and jails ...
Proxmox VE is an open-source server virtualization platform to manage two virtualization technologies: Kernel-based Virtual Machine (KVM) for virtual machines and LXC for containers - with a single web-based interface. [11]
It provides similar functionality to other container-related Linux tools such as Docker and LXC. Lmctfy is the release of Google's container tools and is free and open-source software subject to the terms of Apache License version 2.0.
The main classes of Docker objects are images, containers, and services. [22] A Docker container is a standardized, encapsulated environment that runs applications. [25] A container is managed using the Docker API or CLI. [22] A Docker image is a read-only template used to build containers. Images are used to store and ship applications.
While virtualization technologies such as VMware, Xen and KVM provide full virtualization and can run multiple operating systems and different kernel versions, OpenVZ uses a single Linux kernel and therefore can run only Linux. All OpenVZ containers share the same architecture and kernel version.