Protect containerized applications with optimized cloud-native disaster recovery and backups for all Kubernetes workloads.Easily meet scalability and reliability needs.Build and update enterprise applications faster, without compromising on security, data protection, and enterprise policies.Pure’s container storage as a service for hybrid cloud gives developers the agility of public cloud with the reliability and security of on-premises infrastructure, allowing them to: Get Container Storage as a ServiceĬontainers, like anything else, require storage, and the more flexible and scalable your storage solution, the more advantages you’ll be able to get out of your container usage and your containerization strategies. Google Cloud provides documentation on how to do this. containerd was designed by Docker and is completely compatible with Docker. This means that it would be possible to use containerd along with another component called a low-level runtime to do the work of interacting with the host operating system’s kernel to create a container and in doing so assume the functionality of Docker. Although the host operating system has no concept of a container, it does provide features such as namespaces, cgroups, and file system overlays that make a container possible. Docker is a tool that tells the container runtime, in this case, containerd, to create a container based on the container image. ![]() Yes-even though containerd is a container runtime and Docker is a container engine, it’s possible. Docker is still an independent project that uses containerd as its runtime. containerd: FAQ Does Docker Still Use containerd?ĭocker designed containerd, which is now a part of the CNCF, an organization that supports Kubernetes- and Docker-based deployments. Since they’re both container runtimes, you typically wouldn’t be using containers with CRI-O as you only need one or the other. It pulls container images from registries, manages them on disk, and launches a lower-level runtime to run container processes. CRI-OĪ containerd alternative, CRI-O is another high-level container runtime that implements the Container Runtime Interface (CRI). Source: DockerĬontainerd manages the complete container life cycle of its host system-from image transfer and storage to container execution and supervision to low-level storage to network attachments and more. It’s available for both Linux and Windows.įigure 1: How containerd works. How containerd WorksĬontainerd is a daemon, meaning it’s a computer program that runs as a background process rather than being under the direct control of an interactive user. In February 2019, containerd became an official project within the Cloud Native Computing Foundation (CNCF), just as Kubernetes, Prometheus, Envoy, and CoreDNS have. It can also pull container images from container registries, mount storage, and enable networking for a container. It creates, starts, stops, and destroys containers. A container runtime such as containerd, the container runtime developed by Docker, is a component of a container engine that mounts the container and works with the operating system kernel to start and support the containerization process.ĭocker, Oracle 12c and Persistent Storage What Is containerd?Ĭontainerd is a Docker-developed container runtime that manages the life cycle of a container on a physical or virtual machine (i.e., a host). ![]() It’s a software platform that simplifies the process of building, running, managing, and distributing applications, and it achieves this by virtualizing the operating system of the computer on which it’s installed and running.Ĭontainers are the portable, self-contained environments that Docker and other container engines, such as CRI-O, RKT, and LXD, use to package, ship, and run applications. In this way, Docker is really a facilitator and enabler of application development. In other words, it’s a container engine, a system that allows code developed in one computing environment to work in another computing environment. ![]() There’s no direct comparison between the two, although they’re definitely related and almost always used together, but typically not interchangeably.Įfficient IT Infrastructure Saves More Than Just Energy Costs What Is Docker?Īlthough it’s become synonymous with the word “container,” Docker itself isn’t a container but rather a very popular developer tool for creating, working with, and managing containers. Container runtimes are software components that can run containers on a host operating system.Ĭomparing containerd to Docker is a little like comparing a turbocharger to an engine or an air-conditioning system to a house. Containerd (official brand name is written in lowercase) is the container runtime of Docker, an open source containerization platform.
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