# Attach Node To Cluster

Nodes must be attached and authorized to Platform9 using either the [Platform9 CLI](https://github.com/platform9/pcd-docs-gitbook/blob/main/other-docs/pmk/5.14/nodes/learn/platform9-cli/README.md) or through downloading and installing the Platform9 HostAgent manually.

Once a node is attached and authorized nodes may be attached to a Kubernetes cluster.

### Attach Node(s) from Clusters tab

Follow the steps given below to attach a node to a cluster.

1. Navigate to Infrastructure > Clusters.
2. Select the cluster to which you wish to attach a node.
3. Click `Scale Masters` or `Scale Workers` (seen above the list of clusters).
4. Select `Add` .
5. Confirm the change and the nodes will be attached.

{% hint style="success" %}
**Success**

The node(s) is/are successfully attached to the selected cluster.
{% endhint %}