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Merge pull request #8603 from hakman/containerd-release-notes 

Add release notes and docs for containerd
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Kubernetes Prow Robot 2020-02-21 13:06:55 -08:00 committed by GitHub
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22
docs/cluster_spec.md
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@ -743,6 +743,28 @@ spec:
elbSecurityGroup: sg-123445678
```
### containerRuntime
*WARNING: this works only for Kubernetes version above 1.11.0.*
Alternative [container runtimes](https://kubernetes.io/docs/setup/production-environment/container-runtimes/) can be used to run Kubernetes. Docker is still the default container runtime, but [containerd](https://kubernetes.io/blog/2018/05/24/kubernetes-containerd-integration-goes-ga/) can also be selected.
```yaml
spec:
containerRuntime: containerd
```
### containerd
It is possible to override the [containerd](https://github.com/containerd/containerd/blob/master/README.md) daemon options for all the nodes in the cluster. See the [API docs](https://pkg.go.dev/k8s.io/kops/pkg/apis/kops#ContainerdConfig) for the full list of options.
```yaml
spec:
containerd:
version: 1.3.3
logLevel: info
configOverride: ""
```
### docker
It is possible to override Docker daemon options for all masters and nodes in the cluster. See the [API docs](https://pkg.go.dev/k8s.io/kops/pkg/apis/kops#DockerConfig) for the full list of options.

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docs/releases/1.18-NOTES.md
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@ -2,6 +2,12 @@
(The kops 1.18 release has not been released yet, this is a document to gather the notes prior to the release).
# Significant changes
* [containerd](https://github.com/containerd/containerd/blob/master/README.md) can now be selected as an alternate container runtime for Kubernetes. Use the `--container-runtime containerd` flag to create such a cluster.
* The default instance type for AWS is now t3.medium. This should provide better performance and reduced costs in clusters where the average CPU usage is low.
# Breaking changes
* Terraform users on AWS may need to rename some resources in their state file in order to prepare for Terraform 0.12 support. See Required Actions below.
@ -16,10 +22,6 @@
* Please see the notes in the 1.15 release about the apiGroup changing from kops to kops.k8s.io
# Significant changes
* The default instance type for AWS is now t3.medium. This should provide better performance and reduced costs in clusters where the average CPU usage is low.
# Required Actions
* Terraform users on AWS may need to rename resources in their terraform state file in order to prepare for future Terraform 0.12 support.