---
title: Telegraf Documentation
description: Telegraf plugin for collecting metrics from Multifile
url: https://docs.influxdata.com/telegraf/v1/input-plugins/multifile/
estimated_tokens: 1738
product: Telegraf
version: v1
---

-   Telegraf v1.10.0+

# Multifile Input Plugin

This plugin reads the combined data from multiple files into a single metric, creating one field or tag per file. This is often useful creating custom metrics from the `/sys` or `/proc` filesystems.

To parse metrics from a single file you should use the [file](/telegraf/v1/plugins/#input-file) input plugin instead.

**Introduced in:** Telegraf v1.10.0 **Tags:** system **OS support:** all

## Global configuration options

Plugins support additional global and plugin configuration settings for tasks such as modifying metrics, tags, and fields, creating aliases, and configuring plugin ordering. See [CONFIGURATION.md](/telegraf/v1/configuration/#plugins) for more details.

## Configuration

```toml
# Aggregates the contents of multiple files into a single point
[[inputs.multifile]]
  ## Base directory where telegraf will look for files.
  ## Omit this option to use absolute paths.
  base_dir = "/sys/bus/i2c/devices/1-0076/iio:device0"

  ## If true discard all data when a single file can't be read.
  ## Else, Telegraf omits the field generated from this file.
  # fail_early = true

  ## Files to parse each interval.
  [[inputs.multifile.file]]
    file = "in_pressure_input"
    dest = "pressure"
    conversion = "float"
  [[inputs.multifile.file]]
    file = "in_temp_input"
    dest = "temperature"
    conversion = "float(3)"
  [[inputs.multifile.file]]
    file = "in_humidityrelative_input"
    dest = "humidityrelative"
    conversion = "float(3)"
```

## Metrics

Each file table can contain the following options:

-   `file`: Path of the file to be parsed, relative to the `base_dir`.
-   `dest`: Name of the field/tag key, defaults to `$(basename file)`.
-   `conversion`: Data format used to parse the file contents:
    -   `float(X)`: Converts the input value into a float and divides by the Xth power of 10. Effectively just moves the decimal left X places. For example a value of `123` with `float(2)` will result in `1.23`.
    -   `float`: Converts the value into a float with no adjustment. Same as `float(0)`.
    -   `int`: Converts the value into an integer.
    -   `string`, `""`: No conversion.
    -   `bool`: Converts the value into a boolean.
    -   `tag`: File content is used as a tag.

## Example Output

This example shows a BME280 connected to a Raspberry Pi, using the sample config.

```text
multifile pressure=101.343285156,temperature=20.4,humidityrelative=48.9 1547202076000000000
```

To reproduce this, connect a BMP280 to the board’s GPIO pins and register the BME280 device driver

```sh
cd /sys/bus/i2c/devices/i2c-1
echo bme280 0x76 > new_device
```

The kernel driver provides the following files in `/sys/bus/i2c/devices/1-0076/iio:device0`:

-   `in_humidityrelative_input`: `48900`
-   `in_pressure_input`: `101.343285156`
-   `in_temp_input`: `20400`

#### Related

-   [Configure plugins](/telegraf/v1/configure_plugins/)
-   [Multifile Plugin Source](https://github.com/influxdata/telegraf/tree/v1.38.4/plugins/inputs/multifile/README.md)