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Merge pull request #8724 from rifelpet/calico-mtu-docs 

Adding docs for calico MTU
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Kubernetes Prow Robot 2020-03-11 07:47:37 -07:00 committed by GitHub
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@ -218,6 +218,20 @@ When you enable cross-subnet mode in kops, an addon controller ([k8s-ec2-srcdst]
will be deployed as a Pod (which will be scheduled on one of the masters) to facilitate the disabling of said source/destination address checks.
Only the masters have the IAM policy (`ec2:*`) to allow k8s-ec2-srcdst to execute `ec2:ModifyInstanceAttribute`.
### Configuring Calico MTU
The Calico MTU is configurable by editing the cluster and setting `mtu` option in the calico configuration.
AWS VPCs support jumbo frames, so on cluster creation kops sets the calico MTU to 8912 bytes (9001 minus overhead).
For more details on Calico MTU please see the [Calico Docs](https://docs.projectcalico.org/networking/mtu#determine-mtu-size).
```
spec:
networking:
calico:
mtu: 8912
```
#### More information about Calico
For Calico specific documentation please visit the [Calico Docs](http://docs.projectcalico.org/latest/getting-started/kubernetes/).