"No external stores available" for external attachments

[swazynski]

Describe the problem

I wanted to try out external attachments, but the setting is greyed out:

I set up Minio according to the docs, and snapshots do work. Here is my docker-compose.yml:

version: '3'

services:
  # Grist - Low-code database / spreadsheet platform
  grist:
    image: gristlabs/grist:latest
    # Ports: 8484
    restart: unless-stopped
    networks:
      - web
      - grist
      - db
    depends_on:
      - minio
      - db
    environment:
      - ...
      - GRIST_SANDBOX_FLAVOR=gvisor # Sandboxes individual documents so that formulas in the documents can't access data that they're not supposed to see
      # Snapshots
      - GRIST_DOCS_MINIO_ACCESS_KEY=grist
      - GRIST_DOCS_MINIO_SECRET_KEY=REDACTED
      - GRIST_DOCS_MINIO_USE_SSL=0
      - GRIST_DOCS_MINIO_BUCKET=grist-docs
      - GRIST_DOCS_MINIO_ENDPOINT=minio
      - GRIST_DOCS_MINIO_PORT=9000
      # Redis
      - REDIS_URL=redis://redis
      # Home Database
      - TYPEORM_TYPE=postgres
      - TYPEORM_DATABASE=grist-home
      - TYPEORM_USERNAME=grist
      - TYPEORM_PASSWORD=REDACTED
      - TYPEORM_HOST=db
    logging:
      options:
        max-size: 50m
    volumes:
      - ../../data/grist/grist:/persist

  # Postgres for home database
  db:
    image: postgres:16-alpine
    restart: unless-stopped
    networks:
      db:
    volumes:
      - ../../data/grist/db:/var/lib/postgresql/data
    logging:
      options:
        max-size: 20m
    environment:
      POSTGRES_USER: grist
      POSTGRES_PASSWORD: REDACTED
      POSTGRES_DB: grist-home

  # Minio (S3 compatible storage) for snapshots
  minio:
    image: minio/minio:latest
    restart: unless-stopped
    networks:
      - grist
    volumes:
      - ../../data/grist/minio:/mnt/data
    environment:
      MINIO_ROOT_USER: grist
      MINIO_ROOT_PASSWORD: REDACTED
      MINIO_VOLUMES: /mnt/data
    command: server /data --address ":9000" -console-address ":9001"
    logging:
      options:
        max-size: 20m

  # Create buckets for grist
  createbuckets:
    image: minio/mc
    networks:
      - grist
    depends_on:
      - minio
    entrypoint: >
      /bin/sh -c "
      /usr/bin/mc alias set myminio http://minio:9000 grist REDACTED;
      /usr/bin/mc mb --ignore-existing myminio/grist-docs;
      /usr/bin/mc version enable myminio/grist-docs;
      exit 0;
      "
    logging:
      options:
        max-size: 10m

  # Redis for snapshots and webhooks
  redis:
    image: redis:7
    restart: unless-stopped
    networks:
      - grist
    volumes:
      - '../../data/grist/redis:/data'
    logging:
      options:
        max-size: 20m
    

networks:
  web:
    external: true
  grist:
  db:

What am I missing?

Additional information

• Grist version: 1.4.2
• Grist instance URL: https://sheets.swdec.de
• SSO solution used and its version (if relevant): (not relevant) OIDC
• S3 storage solution and its version (if relevant): Minio (latest docker)
• Docker version (if relevant): 27.5.1
• NodeJS version (if relevant): /
• Redis version (if relevant): 7
• PostgreSQL version (if relevant): 16-alpine

[paulfitz]

You need also the as yet undocumented GRIST_EXTERNAL_ATTACHMENTS_MODE=snapshots setting. We have docs coming for when we announce this feature in our newsletter.

[swazynski]

Ah, thank you for your quick reply. That did the trick!