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added some clarification to the installation section

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Tom Kivlin
2022-05-23 14:32:04 +01:00
parent 3b60dec955
commit 4c1b181aff
1 changed files with 16 additions and 3 deletions
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content/en/docs/concepts/extend-kubernetes/compute-storage-net/network-plugins.md
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@@ -14,6 +14,8 @@ weight: 10
Kubernetes {{< skew currentVersion >}} supports [Container Network Interface](https://github.com/containernetworking/cni)
(CNI) plugins for cluster networking. You must use a CNI plugin that is compatible with your cluster and that suits your needs. Different plugins are available (both open- and closed- source) in the wider Kubernetes ecosystem.
A CNI plugin is required to implement the [Kubernetes network model](/docs/concepts/services-networking/#the-kubernetes-network-model).
You must use a CNI plugin that is compatible with the
[v0.4.0](https://github.com/containernetworking/cni/blob/spec-v0.4.0/SPEC.md) or later
releases of the CNI specification. The Kubernetes project recommends using a plugin that is
@@ -24,9 +26,20 @@ CNI specification (plugins can be compatible with multiple spec versions).
## Installation
A CNI plugin is required to implement the [Kubernetes network model](/docs/concepts/services-networking/#the-kubernetes-network-model).
The CRI manages its own CNI plugins, with Kubelet no longer managing the plugins since the [dockershim was removed in v1.24](https://github.com/kubernetes/kubernetes/pull/106907).
CNI plugins are installed according to their own documentation.
The Container Runtime manages its own CNI plugins.
{{< note >}}
Prior to Kubernetes 1.24, the CNI plugin was managed by the Kubelet using the `cni-bin-dir` and `network-plugin` command line parameters.
These were both removed in Kubernetes 1.24, with management of the CNI no longer in scope of the Kubelet.
See [Troubleshooting CNI plugin-related errors](https://kubernetes.io/docs/tasks/administer-cluster/migrating-from-dockershim/troubleshooting-cni-plugin-related-errors/) if you are facing issues following the removal of dockershim.
{{< /note >}}
For specific information about how a Container Runtime manages the CNI plugins, see the documentation for that Container Runtime, for example:
- [containerd](https://github.com/containerd/containerd/blob/main/script/setup/install-cni)
- [CRI-O](https://github.com/cri-o/cri-o/blob/main/contrib/cni/README.md)
For specific information about how to install and manage a CNI plugin, see the documentation for that plugin.
## Network Plugin Requirements