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Merge pull request #30234 from calvin0327/improvement-install-kubeadm

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Improvement for install-kubeadm
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Kubernetes Prow Robot
2021-10-27 16:07:02 -07:00
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parent a3c025e979 7780084390
commit 01a8f26250
1 changed files with 5 additions and 1 deletions
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content/en/docs/setup/production-environment/tools/kubeadm/install-kubeadm.md
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@@ -69,7 +69,11 @@ For more details please see the [Network Plugin Requirements](/docs/concepts/ext
## Check required ports
These
[required ports](/docs/reference/ports-and-protocols/)
need to be open in order for Kubernetes components to communicate with each other.
need to be open in order for Kubernetes components to communicate with each other. You can use `telnet` to check if a port is open. for example:
```shell
telnet 127.0.0.1 6443
```
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