feature: Support Hetzner cloud provider in Helm chart

charts/cluster-autoscaler/Chart.yaml

@@ -11,4 +11,4 @@ name: cluster-autoscaler
 sources:
   - https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler
 type: application
-version: 9.35.0
+version: 9.36.0

charts/cluster-autoscaler/README.md

@@ -73,6 +73,8 @@ To create a valid configuration, follow instructions for your cloud provider:
 - [Azure](#azure)
 - [OpenStack Magnum](#openstack-magnum)
 - [Cluster API](#cluster-api)
+- [Exoscale](#exoscale)
+- [Hetzner Cloud](#hetzner-cloud)
 
 ### Templating the autoDiscovery.clusterName
 
@@ -259,6 +261,18 @@ $ helm install my-release autoscaler/cluster-autoscaler \
 
 Read [cluster-autoscaler/cloudprovider/exoscale/README.md](https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/exoscale/README.md) for further information on the setup without helm.
 
+### Hetzner Cloud
+
+The following parameters are required:
+
+- `cloudProvider=hetzner`
+- `extraEnv.HCLOUD_TOKEN=...`
+- `autoscalingGroups=...`
+
+Each autoscaling group requires an additional `instanceType` and `region` key to be set.
+
+Read [cluster-autoscaler/cloudprovider/hetzner/README.md](https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/hetzner/README.md) for further information on the setup without helm.
+
 ## Uninstalling the Chart
 
 To uninstall `my-release`:
@@ -375,7 +389,7 @@ vpa:
 | autoDiscovery.labels | list | `[]` | Cluster-API labels to match  https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/clusterapi/README.md#configuring-node-group-auto-discovery |
 | autoDiscovery.roles | list | `["worker"]` | Magnum node group roles to match. |
 | autoDiscovery.tags | list | `["k8s.io/cluster-autoscaler/enabled","k8s.io/cluster-autoscaler/{{ .Values.autoDiscovery.clusterName }}"]` | ASG tags to match, run through `tpl`. |
-| autoscalingGroups | list | `[]` | For AWS, Azure AKS or Magnum. At least one element is required if not using `autoDiscovery`. For example: <pre> - name: asg1<br />   maxSize: 2<br />   minSize: 1 </pre> |
+| autoscalingGroups | list | `[]` | For AWS, Azure AKS or Magnum. At least one element is required if not using `autoDiscovery`. For example: <pre> - name: asg1<br />   maxSize: 2<br />   minSize: 1 </pre> For Hetzner Cloud, the `instanceType` and `region` keys are also required. <pre> - name: mypool<br />   maxSize: 2<br />   minSize: 1<br />   instanceType: CPX21<br />   region: FSN1 </pre> |
 | autoscalingGroupsnamePrefix | list | `[]` | For GCE. At least one element is required if not using `autoDiscovery`. For example: <pre> - name: ig01<br />   maxSize: 10<br />   minSize: 0 </pre> |
 | awsAccessKeyID | string | `""` | AWS access key ID ([if AWS user keys used](https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/aws/README.md#using-aws-credentials)) |
 | awsRegion | string | `"us-east-1"` | AWS region (required if `cloudProvider=aws`) |

charts/cluster-autoscaler/README.md.gotmpl

@@ -73,6 +73,8 @@ To create a valid configuration, follow instructions for your cloud provider:
 - [Azure](#azure)
 - [OpenStack Magnum](#openstack-magnum)
 - [Cluster API](#cluster-api)
+- [Exoscale](#exoscale)
+- [Hetzner Cloud](#hetzner-cloud)
 
 ### Templating the autoDiscovery.clusterName
 
@@ -259,6 +261,18 @@ $ helm install my-release autoscaler/cluster-autoscaler \
 
 Read [cluster-autoscaler/cloudprovider/exoscale/README.md](https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/exoscale/README.md) for further information on the setup without helm.
 
+### Hetzner Cloud
+
+The following parameters are required:
+
+- `cloudProvider=hetzner`
+- `extraEnv.HCLOUD_TOKEN=...`
+- `autoscalingGroups=...`
+
+Each autoscaling group requires an additional `instanceType` and `region` key to be set.
+
+Read [cluster-autoscaler/cloudprovider/hetzner/README.md](https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/hetzner/README.md) for further information on the setup without helm.
+
 ## Uninstalling the Chart
 
 To uninstall `my-release`:

charts/cluster-autoscaler/templates/deployment.yaml

@@ -60,8 +60,12 @@ spec:
           {{- end }}
           {{- if .Values.autoscalingGroups }}
             {{- range .Values.autoscalingGroups }}
+            {{- if eq $.Values.cloudProvider "hetzner" }}
+            - --nodes={{ .minSize }}:{{ .maxSize }}:{{ .instanceType }}:{{ .region }}:{{ .name }}
+            {{- else }}
             - --nodes={{ .minSize }}:{{ .maxSize }}:{{ .name }}
             {{- end }}
+            {{- end }}
           {{- end }}
           {{- if eq .Values.cloudProvider "rancher" }}
             {{- if .Values.cloudConfigPath }}

charts/cluster-autoscaler/values.yaml

@@ -36,6 +36,14 @@ autoDiscovery:
 #   maxSize: 2<br />
 #   minSize: 1
 # </pre>
+# For Hetzner Cloud, the `instanceType` and `region` keys are also required.
+# <pre>
+# - name: mypool<br />
+#   maxSize: 2<br />
+#   minSize: 1<br />
+#   instanceType: CPX21<br />
+#   region: FSN1
+# </pre>
 autoscalingGroups: []
 # - name: asg1
 #   maxSize: 2