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adding docs for calico MTU

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Venkata Gunapati 2019-07-30 09:16:30 -07:00 committed by Peter Rifel
parent 5d12ded7c7
commit a35216420d
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docs/networking.md
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@ -218,6 +218,18 @@ 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).
```
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/).