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Document incompatability with Amazon VPC CNI and 22.04

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Peter Rifel 2023-11-07 20:27:21 -06:00
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docs/networking/aws-vpc.md
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The Amazon VPC CNI uses the native AWS networking for Pods. Every pod gets an Elastic Network Interface (ENI) on the node it is running and an IP address belonging to the subnets assigned to the node.
**WARNING**: The Amazon VPC CNI is not compatible with Ubuntu 22.04. See [kubernetes/kops#15720](https://github.com/kubernetes/kops/issues/15720) and [aws/amazon-vpc-cni-k8s#2103](https://github.com/aws/amazon-vpc-cni-k8s/issues/2103) for more info.
## Installing
To use Amazon VPC, specify the following in the cluster spec:

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docs/operations/images.md
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Ubuntu 22.04 is based on Kernel version **5.15** which fixes all the known major Kernel bugs.
**WARNING**: The Amazon VPC CNI is not compatible with Ubuntu 22.04. See [kubernetes/kops#15720](https://github.com/kubernetes/kops/issues/15720) and [aws/amazon-vpc-cni-k8s#2103](https://github.com/aws/amazon-vpc-cni-k8s/issues/2103) for more info.
Available images can be listed using:
```bash

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* Support for Kubernetes version 1.21 has been removed.
# Known Issues
* The Amazon VPC CNI is not compatible with Ubuntu 22.04. See [kubernetes/kops#15720](https://github.com/kubernetes/kops/issues/15720) and [aws/amazon-vpc-cni-k8s#2103](https://github.com/aws/amazon-vpc-cni-k8s/issues/2103) for more info.
# Deprecations
* Support for Kubernetes version 1.22 is deprecated and will be removed in kOps 1.28.

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* The [default IPv4 service cluster range](https://github.com/kubernetes/kops/pull/15866) is now `100.64.0.0/13`. As this was previously calculated from `nonMasqueradeCIDR` if `serviceClusterIPRange` was not explicitly set, it may be necessary to set it to this value ([the first 1/8](https://github.com/kubernetes/kops/pull/15866/files#diff-5e44add4b8da1d5b1c7119b6cc5a5f42a45c555332f51262162b29790e78f479L397-L404) of the `nonMasqueradeCIDR`).
# Known Issues
* The Amazon VPC CNI is not compatible with Ubuntu 22.04. See [kubernetes/kops#15720](https://github.com/kubernetes/kops/issues/15720) and [aws/amazon-vpc-cni-k8s#2103](https://github.com/aws/amazon-vpc-cni-k8s/issues/2103) for more info.
# Deprecations
* Support for Kubernetes version 1.23 is deprecated and will be removed in kOps 1.29.

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* Support for Kubernetes version 1.23 has been removed.
# Known Issues
* The Amazon VPC CNI is not compatible with Ubuntu 22.04. See [kubernetes/kops#15720](https://github.com/kubernetes/kops/issues/15720) and [aws/amazon-vpc-cni-k8s#2103](https://github.com/aws/amazon-vpc-cni-k8s/issues/2103) for more info.
# Deprecations
* Support for Kubernetes version 1.24 is deprecated and will be removed in kOps 1.30.