whentimeslows/website
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add a ports and protocols reference page

Browse Source 
- Refactored ports and protocols info under docs/reference
- Updated the ports for kube-scheduler and kube-controller based on
  current state

Co-authored-by: Tim Bannister <tim@scalefactory.com>
This commit is contained in:
Pushkar Joglekar
2021-09-13 16:37:13 -07:00
parent d924c223cc
commit 7655d8d778
3 changed files with 45 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files
content/en/docs/setup/production-environment/tools/kubeadm/install-kubeadm.md
+3 -25
View File
@@ -67,31 +67,9 @@ sudo sysctl --system
For more details please see the [Network Plugin Requirements](/docs/concepts/extend-kubernetes/compute-storage-net/network-plugins/#network-plugin-requirements) page.
## Check required ports
### Control-plane node(s)
| Protocol | Direction | Port Range | Purpose | Used By |
|----------|-----------|------------|-------------------------|---------------------------|
| TCP | Inbound | 6443\* | Kubernetes API server | All |
| TCP | Inbound | 2379-2380 | etcd server client API | kube-apiserver, etcd |
| TCP | Inbound | 10250 | kubelet API | Self, Control plane |
| TCP | Inbound | 10251 | kube-scheduler | Self |
| TCP | Inbound | 10252 | kube-controller-manager | Self |
### Worker node(s)
| Protocol | Direction | Port Range | Purpose | Used By |
|----------|-----------|-------------|-----------------------|-------------------------|
| TCP | Inbound | 10250 | kubelet API | Self, Control plane |
| TCP | Inbound | 30000-32767 | NodePort Services† | All |
† Default port range for [NodePort Services](/docs/concepts/services-networking/service/).
Any port numbers marked with * are overridable, so you will need to ensure any
custom ports you provide are also open.
Although etcd ports are included in control-plane nodes, you can also host your own
etcd cluster externally or on custom ports.
These
[required ports](/docs/reference/ports-and-protocols/)
need to be open in order for Kubernetes components to communicate with each other.
The pod network plugin you use (see below) may also require certain ports to be
open. Since this differs with each pod network plugin, please see the