79 lines
3 KiB
Text
79 lines
3 KiB
Text
# Container Networking Interface (CNI)
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**Project Name:** cni
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**Description**
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The CNI (Container Network Interface) project consists of a specification and libraries for writing plugins to configure network interfaces
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in Linux containers, along with a number of supported plugins. CNI concerns itself only with network connectivity of containers and removing
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allocated resources when the container is deleted. Because of this focus, CNI has a wide range of support and the specification is simple to
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implement. CNI consists of 3 separate comonents:
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* CNI Specification: defines an straightforward API between runtimes and network plugins for container network setup/teardown. No more, no less.
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* Plugins: provide network setup for a variety of use-cases and serve as reference examples of plugins conforming to the CNI specification
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* Library: provide a Go implementation of the CNI specification that runtimes can use to more easily consume CNI
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NOTE: CNI Specification is independently versioned from the CNI library and plugins in the repository (e.g. the versions of releases). The plugins are being pulled out into a separate repository
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**Sponsor/Advisor from TOC:** Ken Owens
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**Preferred maturity level:** Incubating
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**License:** Apache License v2.0
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**Source control repositories:** https://github.com/containernetworking/cni
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**external dependencies:** None
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**Initial Committers:** https://github.com/containernetworking/cni/blob/master/MAINTAINERS
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**Infrastructure requests (CI / CNCF Cluster):** None
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**Communication channels (slack, irc, mailing lists):**
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* Email: [cni-dev](https://groups.google.com/forum/#!forum/cni-dev)
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* IRC: #containernetworking channel on freenode.org
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* Slack: https://containernetworking.slack.com
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**Issue tracker (GitHub by default):** Github - https://github.com/containernetworking/cni/issues
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**Website:** https://github.com/containernetworking
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**Release methodology and mechanics:**
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https://github.com/containernetworking/cni/blob/master/ROADMAP.md
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**Social media accounts:** N/A
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**Community size and any existing sponsorship**
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* 56 Contributors
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* 591 Stars
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* 17 releases
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**Adopters:**
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* rkt - container engine
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* Kurma - container runtime
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* Kubernetes - a system to simplify container operations
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* Cloud Foundry - a platform for cloud applications
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* Mesos - a distributed systems kernel
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There is also a large ecosystem of third party plug-ins:
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* Project Calico - a layer 3 virtual network
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* Weave - a multi-host Docker network
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* Contiv Networking - policy networking for various use cases
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* SR-IOV
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* Cilium - BPF & XDP for containers
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* Infoblox - enterprise IP address management for containers
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* Multus - a Multi plugin
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* Romana - Layer 3 CNI plugin supporting network policy for Kubernetes
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* CNI-Genie - generic CNI network plugin
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**Statement on alignment with CNCF mission**:
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CNI defines initial guidelines for a network interface specification focused on
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connectivity and portability of cloud native application patterns.
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It is already supported by many cloud native and container runtimes discussed
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in the adopters section of this document.
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