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57 lines
1.9 KiB
Markdown
57 lines
1.9 KiB
Markdown
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# Scale your cluster
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Constellation provides all features of a Kubernetes cluster including scaling and autoscaling.
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## Worker node scaling
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[During cluster initialization](create.md#init) you can choose to deploy the [cluster autoscaler](https://github.com/kubernetes/autoscaler). It automatically provisions additional worker nodes so that all pods have a place to run.
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Alternatively, you can choose to manually scale your cluster:
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<tabs>
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<tabItem value="azure" label="Azure" default>
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1. Find your Constellation resource group.
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2. Select the `scale-set-workers`.
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3. Go to **settings** and **scaling**.
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4. Set the new **instance count** and **save**.
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</tabItem>
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<tabItem value="gcp" label="GCP" default>
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1. In Compute Engine go to [Instance Groups](https://console.cloud.google.com/compute/instanceGroups/).
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2. **Edit** the **worker** instance group.
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3. Set the new **number of instances** and **save**.
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</tabItem>
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</tabs>
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This works for scaling your worker nodes up and down.
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## Control-plane node scaling
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Control-plane nodes can **only be scaled manually and only scaled up**!
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To increase the number of control-plane nodes, follow these steps:
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<tabs>
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<tabItem value="azure" label="Azure" default>
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1. Find your Constellation resource group.
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2. Select the `scale-set-controlplanes`.
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3. Go to **settings** and **scaling**.
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4. Set the new (increased) **instance count** and **save**.
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</tabItem>
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<tabItem value="gcp" label="GCP" default>
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1. In Compute Engine go to [Instance Groups](https://console.cloud.google.com/compute/instanceGroups/).
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2. **Edit** the **control-plane** instance group.
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3. Set the new (increased) **number of instances** and **save**.
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</tabItem>
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</tabs>
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If you scale down the number of control-planes nodes, the removed nodes won't be able to exit the `etcd` cluster correctly. This will endanger the quorum that's required to run a stable Kubernetes control plane.
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