cri-tools
CLI and validation tools for Kubelet Container Runtime Interface (CRI) . (by kubernetes-sigs)
cri-o
Open Container Initiative-based implementation of Kubernetes Container Runtime Interface (by cri-o)
| cri-tools | cri-o | |
|---|---|---|
| 7 | 33 | |
| 1,557 | 5,020 | |
| 1.0% | 0.6% | |
| 9.2 | 9.8 | |
| 2 days ago | 6 days ago | |
| Go | Go | |
| Apache License 2.0 | Apache License 2.0 |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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.
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.
cri-tools
Posts with mentions or reviews of cri-tools.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-09-04.
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Migrating from dockershim to containerd
Installing crictl (https://github.com/kubernetes-sigs/cri-tools/blob/master/docs/crictl.md) was helpful, as well as journalctl -u containerd.
- kubectl get nodes -o wide shows containerd runtime, but sudo ctr containers list doesn't return any containers on host
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Debugging containerd, A "new" container runtime means new debugging techniques are required
crictl: Uses the CRI interface to fetch data about containers, agnostic of CRIs. Maintained by Kubernetes at https://github.com/kubernetes-sigs/cri-tools
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Quick question: Can you run crictl commands from within a running container?
FROM alpine:latest RUN wget -O - https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.23.0/crictl-v1.23.0-linux-amd64.tar.gz | gunzip | tar xvf - && mv crictl /usr/bin
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k8s-the-hard-way
# wget https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.21.0/crictl-v1.21.0-linux-amd64.tar.gz \ https://github.com/opencontainers/runc/releases/download/v1.0.0-rc93/runc.amd64 \ https://github.com/containernetworking/plugins/releases/download/v0.9.1/cni-plugins-linux-amd64-v0.9.1.tgz \ https://github.com/containerd/containerd/releases/download/v1.4.4/containerd-1.4.4-linux-amd64.tar.gz \ https://storage.googleapis.com/kubernetes-release/release/v1.21.0/bin/linux/amd64/kubectl \ https://storage.googleapis.com/kubernetes-release/release/v1.21.0/bin/linux/amd64/kube-proxy \ https://storage.googleapis.com/kubernetes-release/release/v1.21.0/bin/linux/amd64/kubelet
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A Window into Docker, minikube, and containerd
We are in the endgame now. I promise. From the README, crictl provides a CLI for CRI-compatible container runtimes. The following snippet performs the following:
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😎 Manage WebAssembly Apps in WasmEdge Using Docker Tools
Also make sure that you have cri-o, crictl, containernetworking-plugins, and buildah or docker installed.
cri-o
Posts with mentions or reviews of cri-o.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-02-05.
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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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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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Kubernetes Cluster Setup Using Kubeadm on AWS
Install container runtime on all nodes. We will use cri-o.
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Creating Kubernetes Cluster With CRI-O
Container Runtime Interface (CRI) is one of the important parts of the Kubernetes cluster. It is a plugin interface allowing kubelet to use different container runtimes. And recently CRI-O container runtime has been announced as a CNCF Graduated project. I thought of writing a blog on CRI-O and how to set up a single-node Kubernetes cluster with Kubeadm and CRI-O.
- 32“ E Ink screen that displays daily newspapers on your wall
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Understanding Docker Architecture: A Beginner's Guide to How Docker Works
CRI-O: This is an open-source container runtime designed for use with Kubernetes. It is a lightweight and stable environment for containers. It also complies with the Kubernetes Container Runtime Interface (CRI), making it easy to integrate with Kubernetes.
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How are they doing it?
With CRI-O I believe you can configure registry mirror locations…. Similar to this: https://github.com/cri-o/cri-o/issues/4941
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Docker is deleting Open Source organisations - what you need to know
Alternatives like Podman and CRI-O continue to gain traction and may replace Docker in various places. For example, Kubernetes used to use Docker, then moved to containerd, and now also support CRI-O. Generally speaking, the core features of "Docker" are such a commodity now that no one was the wiser when Kubernetes stopped using it.
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kubeadm init error: CRI v1 runtime API is not implemented
will the site be available for the CKA exam? https://github.com/cri-o/cri-o/blob/main/install.md
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Container Deep Dive 2: Container Engines
The CRI-O container engine provides a stable, more secure, and performant platform for running Open Container Initiative (OCI) compatible runtimes. CRI-Os purpose is to be the container engine that implements the Kubernetes Container Runtime Interface (CRI) for OpenShift Container Platform and Kubernetes, replacing the Docker service. Source
What are some alternatives?
When comparing cri-tools and cri-o you can also consider the following projects:
node-feature-discovery - Node feature discovery for Kubernetes
containerd - An open and reliable container runtime
cni - Container Network Interface - networking for Linux containers
crun - A fast and lightweight fully featured OCI runtime and C library for running containers
SSVM - WasmEdge is a lightweight, high-performance, and extensible WebAssembly runtime for cloud native, edge, and decentralized applications. It powers serverless apps, embedded functions, microservices, smart contracts, and IoT devices.
k3s - Lightweight Kubernetes
cfssl - CFSSL: Cloudflare's PKI and TLS toolkit
minikube - Run Kubernetes locally
runc - CLI tool for spawning and running containers according to the OCI specification
cri-dockerd - dockerd as a compliant Container Runtime Interface for Kubernetes
rustwasmc - Tool for building Rust functions for Node.js. Combine the performance of Rust, safety and portability of WebAssembly, and ease of use of JavaScript.
kaniko - Build Container Images In Kubernetes