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86e71a1280
awsRegion missing in example. It's not working without it. And added cloudProvider setting. It's by default "aws" and not necessary at the moment. But it's to important and should be defined if default will change in the future.
30 lines
1.2 KiB
Markdown
30 lines
1.2 KiB
Markdown
# Autoscaling
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Autoscaling of worker nodes can be easily enabled by setting the `autoscaling_enabled` variable to `true` for a worker group in the `worker_groups` map.
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This will add the required tags to the autoscaling group for the [cluster-autoscaler](https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler).
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One should also set `protect_from_scale_in` to `true` for such worker groups, to ensure that cluster-autoscaler is solely responsible for scaling events.
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You will also need to install the cluster-autoscaler into your cluster. The easiest way to do this is with [helm](https://helm.sh/).
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The [helm chart](https://github.com/helm/charts/tree/master/stable/cluster-autoscaler) for the cluster-autoscaler requires some specific settings to work in an EKS cluster. These settings are supplied via YAML values file when installing the helm chart. Here is an example values file:
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```yaml
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rbac:
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create: true
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sslCertPath: /etc/ssl/certs/ca-bundle.crt
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cloudProvider: aws
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awsRegion: YOUR_AWS_REGION
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autoDiscovery:
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clusterName: YOUR_CLUSTER_NAME
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enabled: true
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```
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To install the chart, simply run helm with the `--values` option:
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```
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helm install stable/cluster-autoscaler --values=path/to/your/values-file.yaml
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```
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