pgbouncer

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docker pull reg.mini.dev/pgbouncer

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Updated 3 days ago

docker pull reg.mini.dev/pgbouncer

PgBouncer Overview

Secure your stack with a hardened PgBouncer image freshly-built by Minimus. Minimus images always include the most up-to-date package version for all packages and dependencies.

PgBouncer is a lightweight connection pooler for PostgreSQL. It sits between your application and the database, reusing server connections across clients to reduce overhead and improve throughput.

Try It Out

Spin up PgBouncer alongside PostgreSQL with Docker Compose. This minimal setup uses transaction-level pooling, the most common mode for web and microservice workloads.

To begin, log into the Minimus registry:

echo "{token}" | docker login reg.mini.dev -u minimus --password-stdin

Create a Docker Compose File

Save the following to a docker-compose.yaml file in your working directory:

services:
  postgres:
    image: reg.mini.dev/postgres:latest
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
      POSTGRES_DB: app
    ports:
      - "5432:5432"
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 5s
      timeout: 5s
      retries: 5

  pgbouncer:
    image: reg.mini.dev/pgbouncer:latest
    depends_on:
      postgres:
        condition: service_healthy
    environment:
      DB_HOST: postgres
      DB_PORT: "5432"
      DB_USER: postgres
      DB_PASSWORD: postgres
      DB_NAME: app
      AUTH_TYPE: scram-sha-256
      POOL_MODE: transaction
      MAX_CLIENT_CONN: "200"
      DEFAULT_POOL_SIZE: "20"
    ports:
      - "6432:5432"

Start the Services

docker compose up -d

Wait for all services to become healthy:

docker compose ps

Connect Through PgBouncer

Connect to PostgreSQL through PgBouncer (password is postgres):

docker compose exec pgbouncer psql -h 127.0.0.1 -p 5432 -U postgres -d app

A successful connection through PgBouncer to the PostgreSQL backend will drop you into the interactive psql prompt:

psql (17.10, server 18.3)
WARNING: psql major version 17, server major version 18.
         Some psql features might not work.
Type "help" for help.

app=#

Clean Up

Stop and remove all containers and volumes:

docker compose down -v

Technical Considerations

The PgBouncer image provided by Minimus is a slim, security-hardened alternative to the public image from Docker Hub. The images are largely interchangeable, with a few differences as noted below.

PgBouncer built by Minimus:

Runs as non-root by default for a security-first approach that protects against privilege escalation attacks.
Drill down on the version specification tab to see the default user, listening ports, entrypoint, volumes, environment variables, etc.

The Payoff

A hardened, minimal image that will remain more secure for the long run and accrue vulnerabilities at a slower rate.

See the risk reduction dashboard for a detailed CVE comparison over the past 30 days.
Review the compliance report to see the default hardening and security configurations for the image.

Terms & Info

Trademark

This catalog is published by Minimus. All product names, logos, and marks, other than those belonging to Minimus, shown are owned by their respective rights holders and appear here only to identify the open source software each image contains. Minimus claims no ownership of those marks and implies no affiliation with, endorsement by, certification by, or sponsorship by any rights holder.

Disclaimer

Images are provided "as-is" without warranty of any kind. "Hardened" refers to the security configuration applied at the time of build and does not constitute a guarantee of ongoing security or absence of vulnerabilities. The free tier is provided without support, SLA, or guaranteed patching timelines. Security updates may be applied to paid subscriptions before or instead of free tier images. By pulling or using any image you agree to our Terms of Use.