---
title: "Assigned ports"
url: https://develop.sentry.dev/development-infrastructure/environment/ports/
---

# Assigned ports

The following is a non-exhaustive list of ports used by Sentry services or any dependency of a Sentry service in development setups. It serves two purposes:

* Finding out why a port is used on your work machine and which process to kill to make it free.
* Finding out which ports are probably safe to assign to new services.

| Port  | Service                                                             | Description                                                                                                                                                                                                                      |
| ----- | ------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 9000  | Clickhouse                                                          | [Devservice](https://develop.sentry.dev/development/devservices.md) `clickhouse`. Database for Snuba.                                                                                                                            |
| 9009  | Clickhouse                                                          | [Devservice](https://develop.sentry.dev/development/devservices.md) `clickhouse`. Database for Snuba.                                                                                                                            |
| 8123  | Clickhouse                                                          |                                                                                                                                                                                                                                  |
| 9009  | Clickhouse                                                          |                                                                                                                                                                                                                                  |
| 3021  | Symbolicator                                                        | [Devservice](https://develop.sentry.dev/development/devservices.md) `symbolicator`. For processing stacktraces.                                                                                                                  |
| 1218  | [Snuba](https://github.com/getsentry/snuba)                         | [Devservice](https://develop.sentry.dev/development/devservices.md) `snuba`. For searching events.                                                                                                                               |
| 1219  | [Snuba](https://github.com/getsentry/snuba) admin                   | Not part of devservices setup, but running `snuba admin` will listen on this port.                                                                                                                                               |
| 9092  | Kafka                                                               | [Devservice](https://develop.sentry.dev/development/devservices.md) `kafka`.                                                                                                                                                     |
| 9093  | Kafka                                                               |                                                                                                                                                                                                                                  |
| 6379  | Redis                                                               | [Devservice](https://develop.sentry.dev/development/devservices.md) `redis` (or perhaps installed via Homebrew in rustier setups), responsible for caches, relay projectconfigs and Celery queues                                |
| 5432  | Postgres                                                            | [Devservice](https://develop.sentry.dev/development/devservices.md) `postgres` (or perhaps installed via Homebrew in rustier setups)                                                                                             |
| 7899  | [Relay](https://getsentry.github.io/relay/)                         | [Devservice](https://develop.sentry.dev/development/devservices.md) `relay`. Serves APIs for SDKs to send events to (aka event ingestion). Webpack on 8000 reverse-proxies to this server. Starts/stops with `sentry devserver`. |
| 8000  | [Sentry Dev](https://develop.sentry.dev/development/environment.md) | Webpack devserver, routing all ingest paths to Relay, and the rest to uWSGI. Routing is defined in `webpack.config.ts` in Sentry.                                                                                                |
| 8001  | uWSGI                                                               | Starts/stops with `sentry devserver`. Serves the Django app/API. Webpack on 8000 reverse-proxies to this server. In a siloed devserver, this port is used for control silo.                                                      |
| 8010  | uWSGI (region silo)                                                 | Starts/stops with `sentry devserver --silo=region`. Serves the Django app/API. Webpack on 8000 reverse-proxies to this server.                                                                                                   |
| 7999  | Sentry frontend prod proxy                                          | For testing local UI changes against a prod API                                                                                                                                                                                  |
| 8000  | [Develop docs](https://github.com/getsentry/develop/)               | The website around this document. **Conflicts with Sentry Dev.**                                                                                                                                                                 |
| 3000  | [User docs](https://github.com/getsentry/sentry-docs/)              | User-facing documentation. May conflict with Relay if Relay is run outside of devservices.                                                                                                                                       |
| 9001  | Sentry Dev Styleguide server                                        | Bound when running `sentry devserver --styleguide`                                                                                                                                                                               |
| 9000  | `sentry run web`                                                    | Legacy default port for `sentry run web`, changed to 9001 to avoid conflict with Clickhouse.                                                                                                                                     |
| 9001  | `sentry run web`                                                    | Barebones frontend without webpack or Relay. [Sentry Dev](https://develop.sentry.dev/development/environment.md) is likely better. **Conflicts with Sentry Dev Styleguide server.**                                              |
| 8000  | [Relay](https://getsentry.github.io/relay/) mkdocs documentation    | At some point this is going to get merged into our existing docs repos. **Conflicts with Sentry Dev.**                                                                                                                           |
| 50051 | Taskbroker                                                          | [taskbroker](https://develop.sentry.dev/backend/application-domains/tasks.md) gRPC interface for taskbroker.                                                                                                                     |
| 8969  | Sentry Spotlight                                                    |                                                                                                                                                                                                                                  |

## [Finding out what's running on your machine](https://develop.sentry.dev/development-infrastructure/environment/ports.md#finding-out-whats-running-on-your-machine)

* Use `lsof -nP -i4 | grep LISTEN` to find occupied ports on macOS.
* The Dashboard UI of Docker for Mac shows you running docker containers/devservices together with assigned ports and option to start/stop.