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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), [45] [46] which decouples the maintenance of core Kubernetes from the actual CRI implementation.
Container clusters need to be managed. This includes functionality to create a cluster, to upgrade the software or repair it, balance the load between existing instances, scale by starting or stopping instances to adapt to the number of users, to log activities and monitor produced logs or the application itself by querying sensors.
Helm is a package manager for Kubernetes. [ 1 ] [ 2 ] It uses 'charts' as its package format , which is based on YAML . Helm was accepted to Cloud Native Computing Foundation on June 1, 2018 at the Incubating maturity level and then moved to the Graduated maturity level on May 1, 2020.
The first public beta version of Docker Compose (version 0.0.1) was released on December 21, 2013. [33] The first production-ready version (1.0) was made available on October 16, 2014. [34] Docker Swarm provides native clustering functionality for Docker containers, which turns a group of Docker engines into a single virtual Docker engine. [35]
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.
Company CEO Sheng Liang says that as organizations increasingly operationalize Kubernetes there is now a lot more focus on lifecycle management and scalability. Version 2.4 of Rancher provides access to a set of tools that makes it easier for IT teams to manage a fleet of Kubernetes clusters even when network connectivity is limited, says Liang.
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 ...
Amazon Elastic Container Registry (ECR) is a Docker registry service for Amazon EC2 instances to access repositories and images. [54] Amazon Elastic Kubernetes Service (EKS) a managed Kubernetes service running on top of EC2 without needing to provision or manage instances. [54]