# Hot Reload

Fluent Bit supports the reloading feature when enabled in the configuration file\
or on the command line with `-Y` or `--enable-hot-reload` option.

Hot reloading is supported on Linux, macOS, and Windows operating systems.

## Update the configuration

To get started with reloading over HTTP, enable the HTTP Server\
in the configuration file:

{% tabs %}
{% tab title="fluent-bit.conf" %}

```
[SERVICE]
    HTTP_Server  On
    HTTP_Listen  0.0.0.0
    HTTP_PORT    2020
    Hot_Reload   On
...
```

{% endtab %}

{% tab title="fluent-bit.yaml" %}

```yaml
service:
    http_server: on
    http_listen: 0.0.0.0
    http_port: 2020
    hot_reload: on
```

{% endtab %}
{% endtabs %}

## How to reload

After updating the configuration, use one of the following methods to perform a\
hot reload:

### HTTP

Use the following HTTP endpoints to perform a hot reload:

* `PUT /api/v2/reload`
* `POST /api/v2/reload`

For using curl to reload Fluent Bit, users must specify an empty request body as:

```
curl -X POST -d '{}' localhost:2020/api/v2/reload
```

### Signal

Hot reloading can be used with `SIGHUP`.

`SIGHUP` signal isn't supported on Windows.

## Confirm a reload

Use one of the following methods to confirm the reload occurred.

### HTTP

Obtain a count of hot reload using the HTTP endpoint:

* `GET /api/v2/reload`

The endpoint returns `hot_reload_count` as follows:

```json
{"hot_reload_count":3}
```

The default value of the counter is `0`.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.fluentbit.io/manual/3.2/administration/hot-reload.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.