---
title: System information endpoints
description: InfluxDB 3 Clustered provides system endpoints for checking instance availability and retrieving version information. Endpoint Method Description /ping GET, HEAD Returns 204 if the querier is available. Response headers include X-Influxdb-Version and X-Influxdb-Build. Does not require authentication. Checks querier health only; does not check ingesters. To verify ingester availability before writing data, send a request to one of the write endpoints.
url: https://docs.influxdata.com/influxdb3/clustered/api/data-api/system-information-endpoints/
estimated_tokens: 323
publisher: InfluxData
canonical: https://docs.influxdata.com/influxdb3/clustered/api/data-api/system-information-endpoints/
---

[Download Clustered Data API Spec](/openapi/influxdb-clustered-data-api.yml)

InfluxDB 3 Clustered provides system endpoints for checking instance
availability and retrieving version information.

|Endpoint|   Method    |                                                                                              Description                                                                                              |
|--------|-------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|`/ping` |`GET`, `HEAD`|Returns `204` if the querier is available. Response headers include `X-Influxdb-Version` and `X-Influxdb-Build`. Does not require authentication. Checks querier health only; does not check ingesters.|

To verify ingester availability before writing data, send a request to one
of the write endpoints.
| Endpoint | Method | Description |
| --- | --- | --- |
| Endpoint | Method | Description |
| /ping | GET ,  HEAD | Returns  204  if the querier is available. Response headers include  X-Influxdb-Version  and  X-Influxdb-Build . Does not require authentication. Checks querier health only; does not check ingesters. |