Documentation

InfluxDB 3 Core

Use Telegraf to write data

Telegraf is a data collection agent for collecting and reporting metrics. Its vast library of input plugins and “plug-and-play” architecture lets you quickly and easily collect metrics from many different sources.

For a list of available plugins, see Telegraf plugins.

Requirements

Basic Telegraf usage

Telegraf is a plugin-based agent with plugins that are enabled and configured in your Telegraf configuration file (telegraf.conf). Each Telegraf configuration must have at least one input plugin and one output plugin.

Telegraf input plugins retrieve metrics from different sources. Telegraf output plugins write those metrics to a destination.

Use the outputs.influxdb_v2 plugin to connect to the InfluxDB v2 write API included in InfluxDB 3 Core and write metrics collected by Telegraf to InfluxDB 3 Core.

# ...

[[outputs.influxdb_v2]]
  urls = ["http://localhost:8181"]
  token = "
AUTH_TOKEN
"
  organization = ""
  bucket = "
DATABASE_NAME
"

# ...

Replace the following:

  • DATABASE_NAME: the name of the database to write data to
  • AUTH_TOKEN: your InfluxDB 3 Core token. Store this in a secret store or environment variable to avoid exposing the raw token string.

See how to Configure Telegraf to write to InfluxDB 3 Core.

Use Telegraf with InfluxDB

Configure Telegraf to write to InfluxDB 3 Core

Update existing or create new Telegraf configurations to use the influxdb_v2 output plugin to write to InfluxDB 3 Core. Start Telegraf using the custom configuration.

Use Telegraf to dual write to InfluxDB

Configure Telegraf to write data to multiple InfluxDB instances or clusters simultaneously.

Use Telegraf to write CSV data

Use the Telegraf file input plugin to read and parse CSV data into line protocol and write it to InfluxDB 3 Core.

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New in InfluxDB 3.5

Key enhancements in InfluxDB 3.5 and the InfluxDB 3 Explorer 1.3.

See the Blog Post

InfluxDB 3.5 is now available for both Core and Enterprise, introducing custom plugin repository support, enhanced operational visibility with queryable CLI parameters and manual node management, stronger security controls, and general performance improvements.

InfluxDB 3 Explorer 1.3 brings powerful new capabilities including Dashboards (beta) for saving and organizing your favorite queries, and cache querying for instant access to Last Value and Distinct Value caches—making Explorer a more comprehensive workspace for time series monitoring and analysis.

For more information, check out:

InfluxDB Docker latest tag changing to InfluxDB 3 Core

On November 3, 2025, the latest tag for InfluxDB Docker images will point to InfluxDB 3 Core. To avoid unexpected upgrades, use specific version tags in your Docker deployments.

If using Docker to install and run InfluxDB, the latest tag will point to InfluxDB 3 Core. To avoid unexpected upgrades, use specific version tags in your Docker deployments. For example, if using Docker to run InfluxDB v2, replace the latest version tag with a specific version tag in your Docker pull command–for example:

docker pull influxdb:2