docs/operations/dynamic-config-provider.md

---
id: dynamic-config-provider
title: "Dynamic Config Providers"
---

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Druid's core mechanism of supplying multiple related set of credentials/secrets/configurations via Druid extension mechanism. Currently, it is only supported for providing Kafka Consumer configuration in [Kafka Ingestion](../development/extensions-core/kafka-ingestion.md).

Eventually this will replace [PasswordProvider](./password-provider.md) 


Users can create custom extension of the `DynamicConfigProvider` interface that is registered at Druid process startup.

For more information, see [Adding a new DynamicConfigProvider implementation](../development/modules.md#adding-a-new-dynamicconfigprovider-implementation).

## Environment variable dynamic config provider

`EnvironmentVariableDynamicConfigProvider` can be used to avoid exposing credentials or other secret information in the configuration files using environment variables. An example to use this `configProvider` is:
```json
druid.some.config.dynamicConfigProvider={"type": "environment","variables":{"secret1": "SECRET1_VAR","secret2": "SECRET2_VAR"}}
```
The values are described below.

|Field|Type|Description|Required|
|-----|----|-----------|--------|
|`type`|String|dynamic config provider type|Yes: `environment`|
|`variables`|Map|environment variables to get information from|Yes|