QuestDB Slim (No HTTP)

Minimal QuestDB image with HTTP/Web Console disabled. Only PostgreSQL wire protocol and ILP TCP are enabled.

~280MB vs ~450MB official image (saves ~170MB by removing web console assets and using Alpine JRE).

Drop-in replacement for questdb/questdb - same ports (8812, 9009), volume paths, and data persistence. Just smaller and without HTTP/Web Console.

Ports

Port	Protocol	Description
8812	TCP	PostgreSQL wire protocol
9009	TCP	InfluxDB Line Protocol

HTTP (9000) and metrics (9003) are disabled by default.

Build

# Single arch
docker build -t ghcr.io/levitree/questdb-slim:latest .

# Multi-arch
docker buildx build --platform linux/amd64,linux/arm64 -t ghcr.io/levitree/questdb-slim:latest --push .

# Specific version
docker build --build-arg QUESTDB_VERSION=9.2.3 -t ghcr.io/levitree/questdb-slim:9.2.3 .

Usage

# Basic
docker run -d \
  -p 8812:8812 \
  -p 9009:9009 \
  -v questdb-data:/var/lib/questdb \
  ghcr.io/levitree/questdb-slim:latest

# With PostgreSQL credentials
docker run -d \
  -e QDB_PG_USER=myuser \
  -e QDB_PG_PASSWORD=mypassword \
  -p 8812:8812 \
  -p 9009:9009 \
  -v questdb-data:/var/lib/questdb \
  ghcr.io/levitree/questdb-slim:latest

# Custom JVM settings
docker run -d \
  -e JAVA_OPTS="-Xms1g -Xmx2g" \
  -p 8812:8812 \
  -p 9009:9009 \
  ghcr.io/levitree/questdb-slim:latest

Connecting

PostgreSQL (psql/pgwire):

psql -h localhost -p 8812 -U admin -d qdb
# Default password: quest

InfluxDB Line Protocol:

echo "sensors,location=london temperature=22.5 $(date +%s)000000000" | nc localhost 9009

Environment Variables

Variable	Default	Description
QDB_PG_USER	admin	PostgreSQL username
QDB_PG_PASSWORD	quest	PostgreSQL password
JAVA_OPTS	-Xms512m -Xmx512m	JVM options

Custom Configuration

Mount a custom server.conf:

docker run -d \
  -v ./server.conf:/var/lib/questdb/conf/server.conf:ro \
  -p 8812:8812 \
  ghcr.io/levitree/questdb-slim:latest

Re-enabling HTTP

If you need HTTP/web console, add to your mounted server.conf:

http.enabled=true
http.bind.to=0.0.0.0:9000

And expose port 9000.

What's Disabled

• HTTP REST API (http.enabled=false)
• Web Console (assets removed)
• Metrics endpoint (metrics.enabled=false)
• UDP line protocol (line.udp.enabled=false)
• Telemetry (telemetry.enabled=false)