---
title: "Mongo DB"
description: "Learn how to dynamically generate Mongo DB Database user credentials."
---
The Infisical Mongo DB dynamic secret allows you to generate Mongo DB Database credentials on demand based on configured role.
If your using Mongo Atlas, please use [Atlas Dynamic Secret](./mongo-atlas) as MongoDB commands are not supported by atlas.
## Prerequisite
Create a user with the required permission in your MongoDB instance. This user will be used to create new accounts on-demand.
## Set up Dynamic Secrets with Mongo DB
Open the Secret Overview dashboard and select the environment in which you would like to add a dynamic secret.
Name by which you want the secret to be referenced
Default time-to-live for a generated secret (it is possible to modify this value after a secret is generated)
Maximum time-to-live for a generated secret
Database host URL.
Database port number. If your Mongo DB is cluster you can omit this.
Username of the admin user that will be used to create dynamic secrets
Password of the admin user that will be used to create dynamic secrets
Name of the database for which you want to create dynamic secrets
Human-readable label that identifies a group of privileges assigned to a database user. This value can either be a built-in role or a custom role.
- Enum: `atlasAdmin` `backup` `clusterMonitor` `dbAdmin` `dbAdminAnyDatabase` `enableSharding` `read` `readAnyDatabase` `readWrite` `readWriteAnyDatabase` ``.
A CA may be required if your DB requires it for incoming connections.
Specifies a template for generating usernames. This field allows customization of how usernames are automatically created.
Allowed template variables are
- `{{randomUsername}}`: Random username string
- `{{unixTimestamp}}`: Current Unix timestamp
- `{{identity.name}}`: Name of the identity that is generating the secret
- `{{random N}}`: Random string of N characters
Allowed template functions are
- `truncate`: Truncates a string to a specified length
- `replace`: Replaces a substring with another value
Examples:
```
{{randomUsername}} // 3POnzeFyK9gW2nioK0q2gMjr6CZqsRiX
{{unixTimestamp}} // 17490641580
{{identity.name}} // testuser
{{random-5}} // x9k2m
{{truncate identity.name 4}} // test
{{replace identity.name 'user' 'replace'}} // testreplace
```
After submitting the form, you will see a dynamic secret created in the dashboard.
If this step fails, you may have to add the CA certificate.
Once you've successfully configured the dynamic secret, you're ready to generate on-demand credentials.
To do this, simply click on the 'Generate' button which appears when hovering over the dynamic secret item.
Alternatively, you can initiate the creation of a new lease by selecting 'New Lease' from the dynamic secret lease list section.
When generating these secrets, it's important to specify a Time-to-Live (TTL) duration. This will dictate how long the credentials are valid for.
Ensure that the TTL for the lease falls within the maximum TTL defined when configuring the dynamic secret.
Once you click the `Submit` button, a new secret lease will be generated and the credentials from it will be shown to you.
## Audit or Revoke Leases
Once you have created one or more leases, you will be able to access them by clicking on the respective dynamic secret item on the dashboard.
This will allow you to see the expiration time of the lease or delete a lease before it's set time to live.
## Renew Leases
To extend the life of the generated dynamic secret leases past its initial time to live, simply click on the **Renew** button as illustrated below.
Lease renewals cannot exceed the maximum TTL set when configuring the dynamic secret