Kubernetes resources are typically defined in configuration files, which can be written in the YAML or JSON formats. This is a unique concept to Kubernetes and allows for atomic updates of a set of containers. All of the containers in a pod are scheduled onto the same host and can communicate with each other over the localhost loopback interface. The base unit of deployment in Kubernetes is called a Pod, which consists of one or more containers. Initial support for Windows Hosts and running Docker Containers for Windows was added in version 1.5 in December 2016. Kubernetes supports different container runtimes, including Docker and rkt. Kubernetes is available for free as open source software. Kubernetes 1.0 was released in in June 2015 with a consortium of companies backing its development, including: Google, RedHat, CoreOS, and many others. Let’s take an in-depth look at each of these orchestrators. Kubernetes, Docker Swarm, and Apache Mesos are 3 modern choices for container and data center orchestration.īoth Kubernetes and Docker Swarm support composing multi-container services, scheduling them to run on a cluster of physical or virtual machines, and include discovery mechanisms for those running services.Īpache Mesos is designed for data center management, and installing complex applications such as Kubernetes on top of data center resources.
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