containerd
cri-dockerd
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containerd | cri-dockerd | |
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125 | 11 | |
16,131 | 932 | |
3.8% | 4.9% | |
9.9 | 8.4 | |
6 days ago | 3 days ago | |
Go | Go | |
Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
containerd
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Exploring 5 Docker Alternatives: Containerization Choices for 2024
Containerd and nerdctl
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The Road To Kubernetes: How Older Technologies Add Up
Kubernetes on the backend used to utilize docker for much of its container runtime solutions. One of the modular features of Kubernetes is the ability to utilize a Container Runtime Interface or CRI. The problem was that Docker didn't really meet the spec properly and they had to maintain a shim to translate properly. Instead users could utilize the popular containerd or cri-o runtimes. These follow the Open Container Initiative or OCI's guidelines on container formats.
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Fun with Avatars: Containerize the app for deployment & distribution | Part. 2
Container Engine: A runtime that executes and manages containers. Docker and containerd are popular container engines.
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Complexity by Simplicity - A Deep Dive Into Kubernetes Components
Multiple container runtimes are supported, like conatinerd, cri-o, or other CRI compliant runtimes.
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macOS Containers v0.0.1
If you really want good adoption, you’ll have to figure out a way for devs to try it out without first having to disable SIP.
Is this related to the code you tried to have merged here: https://github.com/containerd/containerd/pull/8789 ?
This is a failed attempt to upstream part of containerd changes: https://github.com/containerd/containerd/pull/8789
Other part of containerd changes waits for gods-know-what: https://github.com/containerd/containerd/pull/9054
But I haven't gave up yet.
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Kubernetes Setup With WSL Control Plane and Raspberry Pi Workers
containerd is required by kubernetes to handle containers on its behalf. A big thanks to the HostAfrica blog for the information on setting containerd up for debain. So the containerd install will need to happen on both the WSL2 instance and the Raspberry Pis. For WSL2 you can just install containerd directly:
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Understanding Docker Architecture: A Beginner's Guide to How Docker Works
Containerd: This is an open-source container runtime to manage a container's lifecycle. Docker and Kubernetes can use Containerd by providing a high-level API for managing containers and a low-level runtime for container orchestration.
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The advantage of WASM compared with container runtimes
Right now most early examples alas boot a container with a wasm runtime for each wasm instance, which is a sad waste. The whole advantage of wasm should be very lightweight low overhead wasm runtime instances atop a common wasm process. Having a process or container for each instance loses a ton of the benefit, makes it not much better than a regular container.
Thankfully there is work like the Containerd Sandbox API which enables new architectures like this. https://github.com/containerd/containerd/issues/4131
It's still being used to spawn a wasm processes per instance for now, but container runtime project Kuasar is already using the Sandbox API to save significant resources, and has already chimed in in comments on HN to express a desire to have shared-process/multi-wasm-instamxe runtimes, which could indeed allow sub ms spawning that could enable instance per request architectures. https://github.com/kuasar-io/kuasar
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Best virtualization solution with Ubuntu 22.04
containerd
cri-dockerd
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How to create a 3-node kubernetes cluster and deploy an application on my ubuntu 22.04 minibox
$ wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.9/cri-dockerd-0.3.9.amd64.tgz $ tar zxvf cri-dockerd-0.3.9.amd64.tgz $ cd cri-dockerd $ sudo mkdir -p /usr/local/bin $ sudo install -o root -g root -m 0755 cri-dockerd/usr/local/bin/cri-dockerd $ mkdir foo; cd foo $ git clone [email protected]:Mirantis/cri-dockerd.git $ cd cri-dockerd $ sudo install packaging/systemd/* /etc/systemd/system $ sudo sed -i -e 's,/usr/bin/cri-dockerd,/usr/local/bin/cri-dockerd,' /etc/systemd/system/cri-docker.service $ sudo systemctl daemon-reload $ sudo systemctl enable --now cri-docker.socket
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Kubernetes Architecture Explained: Worker Nodes in a Cluster
But not to worry, you can still use Docker as a container runtime in Kubernetes using the cri-dockerd adapter. cri-dockerd provides a shim for Docker Engine that lets you control Docker via the Kubernetes CRI. ****
- CRI-dockerd is an adapter that provides a shim for Docker Engine that lets you control Docker via the Kubernetes Container Runtime Interface
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Kubernetes 1.24 Released: What’s New?
As of version 1.24, either one of the other supported runtimes (e.g. containerd or CRI-O) or, in case you still want to rely on Docker Engine, cri-dockerd must be used. Further information on precautions that may be necessary due to the removal of Dockershim is provided by Kubernetes in a guide.
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Podman 4.0.0
Kubernetes requires a tool which implements the Container Runtime Interface, a standardized API for starting & managing containers. This is from 2015-2016[1].
For a while Kubernetes has included something called the "dockershim", it's own implementation of a CRI interface that, under the hood, calls Docker or Podman. There's also tools like kind[2] ("kubernetes in docker") that go further- not just hosting Kubernetes worker containers in Docker, but hosting the main kubernetes daemons also in Docker.
Kubernetes deprecated Dockershim, formally in December 2020, but is just throwing the switch now in the upcoming 1.24, expected mid-April[3]. A company Mirantis has pledged to take over support of Dockershim[4], and is calling the new effort "cri-dockerd"[5]. This should allow Kubernetes workers to continue to run via Docker or Podman.
Kind is unaffected, since it runs the main Kubernetes controllers in Docker, which then launch their own opencontainerd (one off the main CRI implementations) inside that Docker container, nested like, so no dockership/cri-dockerd is needed).
[1] https://kubernetes.io/blog/2016/12/container-runtime-interfa...
[3] https://kubernetes.io/blog/2022/01/07/kubernetes-is-moving-o...
[4] https://www.mirantis.com/blog/mirantis-to-take-over-support-...
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Kubernetes vs Docker: Understanding Containers in 2021
Alternatively, if you want to keep on using Docker past version 1.23, follow the cri-dockerd project, which plans to keep Docker as a viable runtime alternative.
What are some alternatives?
podman - Podman: A tool for managing OCI containers and pods.
cri-o - Open Container Initiative-based implementation of Kubernetes Container Runtime Interface
Moby - The Moby Project - a collaborative project for the container ecosystem to assemble container-based systems
podman-compose - a script to run docker-compose.yml using podman
colima - Container runtimes on macOS (and Linux) with minimal setup
sysbox - An open-source, next-generation "runc" that empowers rootless containers to run workloads such as Systemd, Docker, Kubernetes, just like VMs.
gvisor - Application Kernel for Containers
minikube - Run Kubernetes locally
nerdctl - contaiNERD CTL - Docker-compatible CLI for containerd, with support for Compose, Rootless, eStargz, OCIcrypt, IPFS, ...
kaniko - Build Container Images In Kubernetes
fly-podman-daemon