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Docker

QueryFlux publishes one image to GitHub Container Registry in two flavours:

ImageContainsPorts
ghcr.io/lakeops-org/queryflux:<version>Server and QueryFlux Studio8080, 9000, 3000
ghcr.io/lakeops-org/queryflux:<version>-slimServer only8080, 9000

latest and latest-slim follow the newest release. Pin a version tag (for example v0.4.0) for anything long-lived.

Run a container​

The example config below sends queries to a Trino at http://trino:8080. Put QueryFlux and Trino on one Docker network so that name resolves (skip the Trino container if you already have an engine reachable from Docker, and change endpoint to its address):

docker network create queryflux
docker run -d --name trino --network queryflux trinodb/trino

The image reads its config from /etc/queryflux/config.yaml. Mount yours there:

docker run -d --name queryflux --network queryflux \
  -p 8080:8080 -p 9000:9000 -p 3000:3000 \
  -v "$PWD/config.yaml:/etc/queryflux/config.yaml:ro" \
  -e QUERYFLUX_ADMIN_USER=admin \
  -e QUERYFLUX_ADMIN_PASSWORD='<strong-password>' \
  ghcr.io/lakeops-org/queryflux:latest

A minimal config.yaml that sends Trino HTTP traffic to one Trino cluster:

config.yaml
queryflux:
  externalAddress: http://localhost:8080
  frontends:
    trinoHttp:
      enabled: true
      port: 8080
  persistence:
    type: inMemory
  adminApi:
    port: 9000

clusters:
  trino-1:
    engine: trino
    enabled: true
    endpoint: http://trino:8080

clusterGroups:
  trino:
    maxRunningQueries: 100
    members: [trino-1]

routers:
  - type: protocolBased
    trinoHttp: trino

routingFallback: trino

Publish a port for every extra frontend you enable (for example -p 5432:5432 for PostgreSQL wire, -p 3306:3306 for MySQL wire).

Check it's up:

curl -s http://localhost:9000/health
curl -X POST http://localhost:8080/v1/statement -H "X-Trino-User: dev" -d "SELECT 42"

Studio is at http://localhost:3000 when you run the non-slim image.

Environment variables​

VariablePurpose
QUERYFLUX_ADMIN_USER, QUERYFLUX_ADMIN_PASSWORDAdmin API and Studio login. Set a strong password outside local testing.
RUST_LOGLog filter, e.g. queryflux=info,queryflux_frontend=debug.
QUERYFLUX_INSTANCE_IDOverride the replica ID (multi-replica with Postgres only).
ADBC_DRIVERS / ADBC_DRIVER_PATHInstall or locate ADBC drivers — see ADBC drivers.

QueryFlux does not expand environment variables inside config.yaml. Keep secrets in the mounted file and protect it like any other credential.

Postgres persistence​

For more than one container, or to keep query history and Studio edits across restarts, switch to Postgres:

queryflux:
  persistence:
    type: postgres
    url: postgres://queryflux:queryflux@postgres:5432/queryflux

Schema migrations run at startup by default. Details: Multi-replica operations.

Docker Compose​

The repository's examples/ directory has ready-made Compose stacks — Trino, Postgres, Studio, Prometheus/Grafana, and a multi-engine Iceberg setup. Getting started walks through each one.

A minimal service definition to drop into your own Compose file:

docker-compose.yml
services:
  queryflux:
    image: ghcr.io/lakeops-org/queryflux:latest
    ports:
      - "8080:8080"
      - "9000:9000"
      - "3000:3000"
    volumes:
      - ./config.yaml:/etc/queryflux/config.yaml:ro
    environment:
      RUST_LOG: queryflux=info
      QUERYFLUX_ADMIN_USER: admin
      # Required: compose refuses to start until you export a password
      QUERYFLUX_ADMIN_PASSWORD: ${QUERYFLUX_ADMIN_PASSWORD:?set QUERYFLUX_ADMIN_PASSWORD}
    restart: unless-stopped

Next steps​