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Add table of contents and fix formatting of network plugins page

pull/644/head
Alex Robinson 2016-06-08 09:08:54 -07:00
parent 4d7f12f0f4
commit 2274e3616e
1 changed files with 6 additions and 2 deletions
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docs/admin/network-plugins.md
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@ -1,6 +1,9 @@
---
---
* TOC
{:toc}
__Disclaimer__: Network plugins are in alpha. Its contents will change rapidly.
Network plugins in Kubernetes come in a few flavors:
@ -32,10 +35,11 @@ The CNI plugin is selected by passing Kubelet the `--network-plugin=cni` command
### kubenet
The Linux-only kubenet plugin provides functionality similar to the `--configure-cbr0` kubelet command-line option. It creates a Linux bridge named `cbr0` and creates a veth pair for each pod with the host end of each pair connected to `cbr0`. The pod end of the pair is assigned an IP address allocated from a range assigned to the node through either configuration or by the controller-manager. `cbr0` is assigned an MTU matching the smallest MTU of an enabled normal interface on the host. The kubenet plugin is currently mutually exclusive with, and will eventually replace, the --configure-cbr0 option. It is also currently incompatible with the flannel experimental overlay.
The Linux-only kubenet plugin provides functionality similar to the `--configure-cbr0` kubelet command-line option. It creates a Linux bridge named `cbr0` and creates a veth pair for each pod with the host end of each pair connected to `cbr0`. The pod end of the pair is assigned an IP address allocated from a range assigned to the node either through configuration or by the controller-manager. `cbr0` is assigned an MTU matching the smallest MTU of an enabled normal interface on the host. The kubenet plugin is currently mutually exclusive with, and will eventually replace, the --configure-cbr0 option. It is also currently incompatible with the flannel experimental overlay.
The plugin requires a few things:
* The standard CNI `bridge` and `host-local` plugins to be placed in `/opt/cni/bin`.
* Kubelet must be run with the `--network-plugin=kubenet` argument to enable the plugin
* Kubelet must also be run with the `--reconcile-cidr` argument to ensure the IP subnet assigned to the node by configuration or the controller-manager is propagated to the plugin
* The node must be assigned an IP subnet through either the `--pod-cidr` kubelet command-line option or the `--allocate-node-cidrs=true --cluster-cidr=<cidr>` controller-manager command-line options.
* The node must be assigned an IP subnet through either the `--pod-cidr` kubelet command-line option or the `--allocate-node-cidrs=true --cluster-cidr=<cidr>` controller-manager command-line options.