# Modify Cluster Attributes

Once the MongoDB cluster is up and running, you can customize several attributes.

{% hint style="info" %}
**Note:** The user management for <code class="expression">space.vars.ionos\_cloud</code> MongoDB clusters happens completely via the [API](https://api.ionos.com/docs/mongodb/v1/#tag/Users). Creation or modification of users from within MongoDB itself is not allowed. For more information, see [<mark style="color:blue;">User Management</mark>](/cloud/databases/mongodb/api/v1-api/users-management.md).
{% endhint %}

## Quick Links

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><mark style="color:blue;"><strong>Rename a MongoDB Cluster</strong></mark></td><td>Learn how to rename your MongoDB cluster.</td><td><a href="/pages/0hEkCPzgCOpZihJW8UrO">/pages/0hEkCPzgCOpZihJW8UrO</a></td></tr><tr><td><mark style="color:blue;"><strong>Upgrade the MongoDB Version</strong></mark></td><td>Learn how to upgrade the MongoDB version.</td><td><a href="/pages/zzAxbtL8u52AQiJo5GCp">/pages/zzAxbtL8u52AQiJo5GCp</a></td></tr><tr><td><mark style="color:blue;"><strong>Set MongoDB Maintenance Windows</strong></mark></td><td>Learn how to set maintenance windows for your MongoDB cluster.</td><td><a href="/pages/0rJRjrNLWd8NxckrhvXc">/pages/0rJRjrNLWd8NxckrhvXc</a></td></tr><tr><td><mark style="color:blue;"><strong>Scale a MongoDB Cluster Vertically</strong></mark></td><td>Learn how to scale your MongoDB cluster vertically by adjusting RAM and CPU.</td><td><a href="/pages/f55xPfwR1FjsmfLFQFZl">/pages/f55xPfwR1FjsmfLFQFZl</a></td></tr><tr><td><mark style="color:blue;"><strong>Scale a MongoDB Cluster Horizontally</strong></mark></td><td>Learn how to scale your MongoDB cluster horizontally by adding replicas.</td><td><a href="/pages/8G13kpvZrbzxDVZpjxWB">/pages/8G13kpvZrbzxDVZpjxWB</a></td></tr><tr><td><mark style="color:blue;"><strong>Increase MongoDB Cluster Shards</strong></mark></td><td>Learn how to increase the number of shards in your MongoDB cluster.</td><td><a href="/pages/2JNX7TqrP15h4cDxMMsX">/pages/2JNX7TqrP15h4cDxMMsX</a></td></tr></tbody></table>


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