8086 InfluxDB TCP
Reference for TCP port 8086, commonly associated with InfluxDB.
What it's for
Port 8086 is the default port for InfluxDB, a time-series database purpose-built for metrics, sensor data, and other timestamped data at high write volume. It's commonly paired with Grafana for visualization and used in IoT telemetry, application performance monitoring, and infrastructure metrics pipelines as an alternative or complement to Prometheus.
Protocol basics
InfluxDB exposes an HTTP API on port 8086 for both writing data points and querying via its query language (Flux in newer versions, InfluxQL in older ones). This HTTP-based design makes it straightforward to write to from virtually any language or tool with basic HTTP client capabilities, unlike databases requiring a specialized binary driver. As with other database ports, 8086 should sit on a private network with authentication enabled, particularly since time-series data often includes operationally or business-sensitive metrics.