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[rke2] - enable cis-profile, add configuration for CIS hardening #263

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Apr 24, 2024
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[rke2] - enable cis-profile, add configuration for CIS hardening #263

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10 changes: 10 additions & 0 deletions docs/src/topics/flavors/rke2.md
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@@ -1,4 +1,14 @@
# RKE2

This flavor uses RKE2 for the kubernetes distribution. By default it configures the cluster
with the [CIS profile](https://docs.rke2.io/security/hardening_guide#rke2-configuration):
> Using the generic cis profile will ensure that the cluster passes the CIS benchmark (rke2-cis-1.XX-profile-hardened) associated with the Kubernetes version that RKE2 is running. For example, RKE2 v1.28.XX with the profile: cis will pass the rke2-cis-1.7-profile-hardened in Rancher.

```admonish warning
Until [this upstream PR](https://github.com/rancher-sandbox/cluster-api-provider-rke2/pull/301) is merged, CIS profile enabling
will not work for RKE2 versions >= v1.29.
```

## Specification
| Control Plane | CNI | Default OS | Installs ClusterClass | IPv4 | IPv6 |
|-------------------------------|--------|--------------|-----------------------|------|------|
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2 changes: 2 additions & 0 deletions templates/flavors/rke2/rke2ConfigTemplate.yaml
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Expand Up @@ -9,6 +9,8 @@ spec:
agentConfig:
version: ${KUBERNETES_VERSION}
nodeName: '{{ ds.meta_data.label }}'
cisProfile: ${CIS_PROFILE:-"cis-1.23"}
protectKernelDefaults: true
# TODO: use MDS to get public and private IP instead because hostname ordering can't always be assumed
preRKE2Commands:
- |
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2 changes: 2 additions & 0 deletions templates/flavors/rke2/rke2ControlPlane.yaml
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Expand Up @@ -33,6 +33,8 @@ spec:
agentConfig:
version: ${KUBERNETES_VERSION}
nodeName: '{{ ds.meta_data.label }}'
cisProfile: ${CIS_PROFILE:-"cis-1.23"}
protectKernelDefaults: true
preRKE2Commands:
- |
mkdir -p /etc/rancher/rke2/config.yaml.d/
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