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podman.io In computing , Podman ( pod manager ) is an open source Open Container Initiative (OCI)-compliant [ 2 ] container management tool from Red Hat used for handling containers, images , volumes , and pods on the Linux operating system , [ 3 ] with support for macOS and Microsoft Windows via a virtual machine . [ 4 ]
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 ...
Docker is a set of platform as a service (PaaS) products that use OS-level virtualization to deliver software in packages called containers. [5] The service has both free and premium tiers. The software that hosts the containers is called Docker Engine. [6] It was first released in 2013 and is developed by Docker, Inc. [7]
Kubernetes supports several abstractions of workloads that are at a higher level over simple pods. This allows users to declaratively define and manage these high-level abstractions, instead of having to manage individual pods by themselves. Several of these abstractions, supported by a standard installation of Kubernetes, are described below.
Name Guest OS SMP available Runs arbitrary OS Supported guest OS drivers Method of operation Typical use Speed relative to host OS Commercial support available Containers, or Zones
The first Linux kernel mainline featuring cgroups (developed by Google since 2006) is released, laying a foundation for later technologies like LXC, Docker, Systemd-nspawn and Podman. January 15, 2008 VMware, Inc. announces it has entered into a definitive agreement to acquire Thinstall, a privately held application virtualization software company.
L 4 Linux is a variant of the Linux kernel for operating systems, that is altered to the extent that it can run paravirtualized on an L4 microkernel, where the L4Linux kernel runs a service.
Container Linux provides no package manager as a way for distributing payload applications, requiring instead all applications to run inside their containers. Serving as a single control host, a Container Linux instance uses the underlying operating-system-level virtualization features of the Linux kernel to create and configure multiple containers that perform as isolated Linux systems.