> For the complete documentation index, see [llms.txt](https://bastion.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bastion.gitbook.io/docs/prerequisites/mongodb.md).
# Setup Database
Bastion uses MongoDB to store its data. You can either install MongoDB on your own system or use a MongoDB cloud service like MongoDB Atlas.
{% tabs %}
{% tab title="Use MongoDB Atlas" %}
Head over to [mongodb.com/cloud/atlas](https://www.mongodb.com/cloud/atlas) and signup for a new account.
Create a database cluster by going to **Database > Create**.
MongoDB Atlas provides provides one free shared cluster that should be more than enough for Bastion.
Add a database user by going to **Database Access > Add new database user**.
Use **Password** authentication method. The set the username and password you want. Ensure it is secure though.
Add a **Built-in Role** and select the **Read and write to any database** option and click **Add User** to create the database user.
Now head back to **Database** and click on **Connect > Connect your application**.
Copy the connection URI and replace the `` in the URI to the password you set for the database user you created earlier.
The URI will look like the following. Make sure to replace `` and ``, `` and `` will be filled out for you.
```
mongodb+srv://:@.mongodb.net/?retryWrites=true&w=majority
```
{% endtab %}
{% tab title="Install MongoDB" %}
If you want to install MongoDB on your on system follow the installation guide for your operating system before proceeding with the installation.
{% embed url="" %}
{% endtab %}
{% endtabs %}
---
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