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A container runtime is responsible for the lifecycle of containers, including launching, reconciling and killing of containers. kubelet interacts with container runtimes via the Container Runtime Interface (CRI), [46] [47] which decouples the maintenance of core Kubernetes from the actual CRI implementation.
Podman is a drop-in [19] replacement for Oracle Container Runtime for Docker in Oracle Linux 8 and Oracle Linux 9. Podman, Buildah, and Skopeo are a set of tools that you can use to create, run, and manage applications across Oracle Linux systems by using Open Container Initiative (OCI) compatible containers.
The Cloud Native Computing Foundation (CNCF) is a Linux Foundation project that was started in 2015 to help advance container technology [1] and align the tech industry around its evolution. It was announced alongside Kubernetes 1.0, an open source container cluster manager, which was contributed to the Linux Foundation by Google as a
OpenShift is a family of containerization software products developed by Red Hat.Its flagship product is the OpenShift Container Platform — a hybrid cloud platform as a service built around Linux containers orchestrated and managed by Kubernetes on a foundation of Red Hat Enterprise Linux.
The project has several distributions for specific purposes like MicroOS, which is an immutable operating system that hosts container workloads, and the Kubernetes certified distribution Kubic, which is a multi-purpose standalone and Kubernetes container operating system based on openSUSE MicroOS.
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. [22]
The OCI organization includes the development of runc, which is the reference implementation of the runtime-spec, [7] [8] a container runtime that implements their specification and serves as a basis for other higher-level tools. runc was first released in July 2015 as version 0.0.1 [9] and it reached version 1.0.0 on June 22, 2021.
The latter had been a separate software package in earlier history. By 2007 the term Solaris Containers came to mean a Solaris Zone combined with resource management controls. Later, there was a gradual move such that Solaris Containers specifically referred to non-global zones, with or without additional Resource Management.