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Add-ons extend the functionality of Kubernetes.
This page lists some of the available add-ons and links to their respective installation instructions.
Add-ons in each section are sorted alphabetically - the ordering does not imply any preferential status.
-->
Add-ons 扩展了 Kubernetes 的功能。

本文列举了一些可用的 add-ons 以及到它们各自安装说明的链接。

每个 Add-ons 按字母顺序排序 - 顺序不代表任何优先地位。

<!-- body -->

<!--
## Networking and Network Policy
* [ACI](https://www.github.com/noironetworks/aci-containers) provides integrated container networking and network security with Cisco ACI.
* [Antrea](https://antrea.io/) operates at Layer 3/4 to provide networking and security services for Kubernetes, leveraging Open vSwitch as the networking data plane.
* [Calico](https://docs.projectcalico.org/latest/getting-started/kubernetes/) is a secure L3 networking and network policy provider.
* [Canal](https://github.com/tigera/canal/tree/master/k8s-install) unites Flannel and Calico, providing networking and network policy.
* [Cilium](https://github.com/cilium/cilium) is a L3 network and network policy plugin that can enforce HTTP/API/L7 policies transparently. Both routing and overlay/encapsulation mode are supported.
* [CNI-Genie](https://github.com/Huawei-PaaS/CNI-Genie) enables Kubernetes to seamlessly connect to a choice of CNI plugins, such as Calico, Canal, Flannel, or Weave.
* [Contiv](https://contivpp.io/) provides configurable networking (native L3 using BGP, overlay using vxlan, classic L2, and Cisco-SDN/ACI) for various use cases and a rich policy framework. Contiv project is fully [open sourced](https://github.com/contiv). The [installer](https://github.com/contiv/install) provides both kubeadm and non-kubeadm based installation options.
* [Contrail](http://www.juniper.net/us/en/products-services/sdn/contrail/contrail-networking/), based on [Tungsten Fabric](https://tungsten.io), is an open source, multi-cloud network virtualization and policy management platform. Contrail and Tungsten Fabric are integrated with orchestration systems such as Kubernetes, OpenShift, OpenStack and Mesos, and provide isolation modes for virtual machines, containers/pods and bare metal workloads.
* [Flannel](https://github.com/flannel-io/flannel#deploying-flannel-manually) is an overlay network provider that can be used with Kubernetes.
* [Knitter](https://github.com/ZTE/Knitter/) is a network solution supporting multiple networking in Kubernetes.
* Multus is a Multi plugin for multiple network support in Kubernetes to support all CNI plugins (e.g. Calico, Cilium, Contiv, Flannel), in addition to SRIOV, DPDK, OVS-DPDK and VPP based workloads in Kubernetes.
* [OVN-Kubernetes](https://github.com/ovn-org/ovn-kubernetes/) is a networking provider for Kubernetes based on [OVN (Open Virtual Network)](https://github.com/ovn-org/ovn/), a virtual networking implementation that came out of the Open vSwitch (OVS) project. OVN-Kubernetes provides an overlay based networking implementation for Kubernetes, including an OVS based implementation of load balancing and network policy.
* [OVN4NFV-K8S-Plugin](https://github.com/opnfv/ovn4nfv-k8s-plugin) is OVN based CNI controller plugin to provide cloud native based Service function chaining(SFC), Multiple OVN overlay networking, dynamic subnet creation, dynamic creation of virtual networks, VLAN Provider network, Direct provider network and pluggable with other Multi-network plugins, ideal for edge based cloud native workloads in Multi-cluster networking
* [NSX-T](https://docs.vmware.com/en/VMware-NSX-T/2.0/nsxt_20_ncp_kubernetes.pdf) Container Plug-in (NCP) provides integration between VMware NSX-T and container orchestrators such as Kubernetes, as well as integration between NSX-T and container-based CaaS/PaaS platforms such as Pivotal Container Service (PKS) and OpenShift.
* [Nuage](https://github.com/nuagenetworks/nuage-kubernetes/blob/v5.1.1-1/docs/kubernetes-1-installation.rst) is an SDN platform that provides policy-based networking between Kubernetes Pods and non-Kubernetes environments with visibility and security monitoring.
* [Romana](https://github.com/romana) is a Layer 3 networking solution for pod networks that also supports the [NetworkPolicy](/docs/concepts/services-networking/network-policies/) API.
* [Weave Net](https://www.weave.works/docs/net/latest/kubernetes/kube-addon/) provides networking and network policy, will carry on working on both sides of a network partition, and does not require an external database.
* [Calico](https://docs.projectcalico.org/latest/introduction/) is a networking and network policy provider. Calico supports a flexible set of networking options so you can choose the most efficient option for your situation, including non-overlay and overlay networks, with or without BGP. Calico uses the same engine to enforce network policy for hosts, pods, and (if using Istio & Envoy) applications at the service mesh layer.
* [Canal](https://projectcalico.docs.tigera.io/getting-started/kubernetes/flannel/flannel) unites Flannel and Calico, providing networking and network policy.
* [Cilium](https://github.com/cilium/cilium) is a L3 network and network policy plugin that can enforce HTTP/API/L7 policies transparently. Both routing and overlay/encapsulation mode are supported, and it can work on top of other CNI plugins.
-->
## 网络和网络策略
## 联网和网络策略

* [ACI](https://www.github.com/noironetworks/aci-containers) 通过 Cisco ACI 提供集成的容器网络和安全网络。
* [Antrea](https://antrea.io/) 在第 3/4 层执行操作，为 Kubernetes
提供网络连接和安全服务。Antrea 利用 Open vSwitch 作为网络的数据面。
* [Calico](https://docs.projectcalico.org/v3.11/getting-started/kubernetes/installation/calico)
是一个安全的 L3 网络和网络策略驱动。
* [Canal](https://github.com/tigera/canal/tree/master/k8s-install) 结合 Flannel 和 Calico，提供网络和网络策略。
* [Calico](https://docs.projectcalico.org/latest/introduction/) 是一个联网和网络策略供应商。
Calico 支持一套灵活的网络选项，因此你可以根据自己的情况选择最有效的选项，包括非覆盖和覆盖网络，带或不带 BGP。
Calico 使用相同的引擎为主机、Pod 和（如果使用 Istio 和 Envoy）应用程序在服务网格层执行网络策略。
* [Canal](https://projectcalico.docs.tigera.io/getting-started/kubernetes/flannel/flannel) 结合 Flannel 和 Calico，提供联网和网络策略。
* [Cilium](https://github.com/cilium/cilium) 是一个 L3 网络和网络策略插件，能够透明的实施 HTTP/API/L7 策略。
同时支持路由（routing）和覆盖/封装（overlay/encapsulation）模式。
* [CNI-Genie](https://github.com/Huawei-PaaS/CNI-Genie) 使 Kubernetes 无缝连接到一种 CNI 插件，
例如：Flannel、Calico、Canal 或者 Weave。
同时支持路由（routing）和覆盖/封装（overlay/encapsulation）模式，并且它可以在其他 CNI 插件之上工作。
<!--
* [CNI-Genie](https://github.com/cni-genie/CNI-Genie) enables Kubernetes to seamlessly connect to a choice of CNI plugins, such as Calico, Canal, Flannel, or Weave.
* [Contiv](https://contivpp.io/) provides configurable networking (native L3 using BGP, overlay using vxlan, classic L2, and Cisco-SDN/ACI) for various use cases and a rich policy framework. Contiv project is fully [open sourced](https://github.com/contiv). The [installer](https://github.com/contiv/install) provides both kubeadm and non-kubeadm based installation options.
* [Contrail](https://www.juniper.net/us/en/products-services/sdn/contrail/contrail-networking/), based on [Tungsten Fabric](https://tungsten.io), is an open source, multi-cloud network virtualization and policy management platform. Contrail and Tungsten Fabric are integrated with orchestration systems such as Kubernetes, OpenShift, OpenStack and Mesos, and provide isolation modes for virtual machines, containers/pods and bare metal workloads.
-->
* [CNI-Genie](https://github.com/cni-genie/CNI-Genie) 使 Kubernetes 无缝连接到
Calico、Canal、Flannel 或 Weave 等其中一种 CNI 插件。
* [Contiv](https://contivpp.io/) 为各种用例和丰富的策略框架提供可配置的网络
（使用 BGP 的本机 L3、使用 vxlan 的覆盖、标准 L2 和 Cisco-SDN/ACI）。
（带 BGP 的原生 L3、带 vxlan 的覆盖、标准 L2 和 Cisco-SDN/ACI）。
Contiv 项目完全[开源](https://github.com/contiv)。
[安装程序](https://github.com/contiv/install) 提供了基于 kubeadm 和非 kubeadm 的安装选项。
* 基于 [Tungsten Fabric](https://tungsten.io) 的
[Contrail](https://www.juniper.net/us/en/products-services/sdn/contrail/contrail-networking/)
是一个开源的多云网络虚拟化和策略管理平台，Contrail 和 Tungsten Fabric 与业务流程系统
（例如 Kubernetes、OpenShift、OpenStack和Mesos）集成在一起，
其[安装程序](https://github.com/contiv/install) 提供了基于 kubeadm 和非 kubeadm 的安装选项。
* [Contrail](https://www.juniper.net/us/en/products-services/sdn/contrail/contrail-networking/) 基于
[Tungsten Fabric](https://tungsten.io)，是一个开源的多云网络虚拟化和策略管理平台。
Contrail 和 Tungsten Fabric 与业务流程系统（例如 Kubernetes、OpenShift、OpenStack 和 Mesos）集成在一起，
为虚拟机、容器或 Pod 以及裸机工作负载提供了隔离模式。
<!--
* [Flannel](https://github.com/flannel-io/flannel#deploying-flannel-manually) is an overlay network provider that can be used with Kubernetes.
* [Knitter](https://github.com/ZTE/Knitter/) is a plugin to support multiple network interfaces in a Kubernetes pod.
* [Multus](https://github.com/k8snetworkplumbingwg/multus-cni) is a Multi plugin for multiple network support in Kubernetes to support all CNI plugins (e.g. Calico, Cilium, Contiv, Flannel), in addition to SRIOV, DPDK, OVS-DPDK and VPP based workloads in Kubernetes.
-->
* [Flannel](https://github.com/flannel-io/flannel#deploying-flannel-manually)
是一个可以用于 Kubernetes 的 overlay 网络提供者。
* [Knitter](https://github.com/ZTE/Knitter/) 是为 kubernetes 提供复合网络解决方案的网络组件。
* Multus 是一个多插件，可在 Kubernetes 中提供多种网络支持，
以支持所有 CNI 插件（例如 Calico，Cilium，Contiv，Flannel），
* [Knitter](https://github.com/ZTE/Knitter/) 是在一个 Kubernetes Pod 中支持多个网络接口的插件。
* [Multus](https://github.com/k8snetworkplumbingwg/multus-cni) 是一个多插件，
可在 Kubernetes 中提供多种网络支持，以支持所有 CNI 插件（例如 Calico、Cilium、Contiv、Flannel），
而且包含了在 Kubernetes 中基于 SRIOV、DPDK、OVS-DPDK 和 VPP 的工作负载。
<!--
* [OVN-Kubernetes](https://github.com/ovn-org/ovn-kubernetes/) is a networking provider for Kubernetes based on [OVN (Open Virtual Network)](https://github.com/ovn-org/ovn/), a virtual networking implementation that came out of the Open vSwitch (OVS) project. OVN-Kubernetes provides an overlay based networking implementation for Kubernetes, including an OVS based implementation of load balancing and network policy.
* [OVN4NFV-K8S-Plugin](https://github.com/opnfv/ovn4nfv-k8s-plugin) is OVN based CNI controller plugin to provide cloud native based Service function chaining(SFC), Multiple OVN overlay networking, dynamic subnet creation, dynamic creation of virtual networks, VLAN Provider network, Direct provider network and pluggable with other Multi-network plugins, ideal for edge based cloud native workloads in Multi-cluster networking.
-->
* [OVN-Kubernetes](https://github.com/ovn-org/ovn-kubernetes/) 是一个 Kubernetes 网络驱动，
基于 [OVN（Open Virtual Network）](https://github.com/ovn-org/ovn/)实现，是从 Open vSwitch (OVS)
项目衍生出来的虚拟网络实现。
OVN-Kubernetes 为 Kubernetes 提供基于覆盖网络的网络实现，包括一个基于 OVS 实现的负载均衡器
和网络策略。
* [OVN4NFV-K8S-Plugin](https://github.com/opnfv/ovn4nfv-k8s-plugin) 是一个基于 OVN 的 CNI
控制器插件，提供基于云原生的服务功能链条（Service Function Chaining，SFC）、多种 OVN 覆盖
网络、动态子网创建、动态虚拟网络创建、VLAN 驱动网络、直接驱动网络，并且可以
驳接其他的多网络插件，适用于基于边缘的、多集群联网的云原生工作负载。
* [NSX-T](https://docs.vmware.com/en/VMware-NSX-T/2.0/nsxt_20_ncp_kubernetes.pdf) 容器插件（NCP）
项目衍生出来的虚拟网络实现。OVN-Kubernetes 为 Kubernetes 提供基于覆盖网络的网络实现，
包括一个基于 OVS 实现的负载均衡器和网络策略。
* [OVN4NFV-K8S-Plugin](https://github.com/opnfv/ovn4nfv-k8s-plugin) 是一个基于 OVN 的 CNI 控制器插件，
提供基于云原生的服务功能链条（Service Function Chaining，SFC）、多种 OVN 覆盖网络、动态子网创建、
动态虚拟网络创建、VLAN 驱动网络、直接驱动网络，并且可以驳接其他的多网络插件，
适用于基于边缘的、多集群联网的云原生工作负载。
<!--
* [NSX-T](https://docs.vmware.com/en/VMware-NSX-T-Data-Center/index.html) Container Plug-in (NCP) provides integration between VMware NSX-T and container orchestrators such as Kubernetes, as well as integration between NSX-T and container-based CaaS/PaaS platforms such as Pivotal Container Service (PKS) and OpenShift.
* [Nuage](https://github.com/nuagenetworks/nuage-kubernetes/blob/v5.1.1-1/docs/kubernetes-1-installation.rst) is an SDN platform that provides policy-based networking between Kubernetes Pods and non-Kubernetes environments with visibility and security monitoring.
* [Romana](https://github.com/romana) is a Layer 3 networking solution for pod networks that also supports the [NetworkPolicy](/docs/concepts/services-networking/network-policies/) API.
* [Weave Net](https://www.weave.works/docs/net/latest/kubernetes/kube-addon/) provides networking and network policy, will carry on working on both sides of a network partition, and does not require an external database.
-->
* [NSX-T](https://docs.vmware.com/en/VMware-NSX-T-Data-Center/index.html) 容器插件（NCP）
提供了 VMware NSX-T 与容器协调器（例如 Kubernetes）之间的集成，以及 NSX-T 与基于容器的
CaaS / PaaS 平台（例如关键容器服务（PKS）和 OpenShift）之间的集成。
* [Nuage](https://github.com/nuagenetworks/nuage-kubernetes/blob/v5.1.1-1/docs/kubernetes-1-installation.rst)
是一个 SDN 平台，可在 Kubernetes Pods 和非 Kubernetes 环境之间提供基于策略的联网，并具有可视化和安全监控。
* [Romana](https://github.com/romana) 是一个 Pod 网络的第三层解决方案，并支持
[NetworkPolicy](/zh-cn/docs/concepts/services-networking/network-policies/) API。
* [Weave Net](https://www.weave.works/docs/net/latest/kubernetes/kube-addon/)
提供在网络分组两端参与工作的网络和网络策略，并且不需要额外的数据库。
提供在网络分组两端参与工作的联网和网络策略，并且不需要额外的数据库。

<!--
## Service Discovery
Expand Down Expand Up @@ -127,7 +130,7 @@ Add-ons 扩展了 Kubernetes 的功能。
* [KubeVirt](https://kubevirt.io/user-guide/#/installation/installation) 是可以让 Kubernetes
运行虚拟机的 add-ons。通常运行在裸机集群上。
* [节点问题检测器](https://github.com/kubernetes/node-problem-detector) 在 Linux 节点上运行，
并将系统问题报告为[事件](/docs/reference/kubernetes-api/cluster-resources/event-v1/)
并将系统问题报告为[事件](/zh-cn/docs/reference/kubernetes-api/cluster-resources/event-v1/)
或[节点状况](/zh-cn/docs/concepts/architecture/nodes/#condition)。

<!--
Expand Down

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