Requirements

Following is a brief overview of the requirements of Invenio:

  • Supported Python versions:

    • Python 3: v3.6, v3.7 and 3.8.

  • Supported databases:

    • PostgreSQL v9.6+, MySQL 5.6+ or SQLite (for testing).

  • Supported search engines:

    • Elasticsearch v6 or v7.

  • Supported memory caches:

    • Redis or Memcache.

  • Supported message queues:

    • RabbitMQ, Redis.

  • Supported storage protocols:

    • Local, S3, WebDAV, XRootD and many more.

  • Supported WSGI servers:

    • Gunicorn

    • uWSGI

    • mod_wsgi

  • Supported Flask versions:

    • v1.0.4+

  • Supported Celery versions:

    • v5.0, v4.4

  • Supported operating systems:

    • macOS: Newer releases

    • Linux: Newer distributions such as Ubuntu 18 or CentOS 7.

System requirements

Invenio can run in both Docker, virtual machines and physical machines. Invenio can run on a single machine or a cluster of 100s of machines. It all depends on exactly how much data you are handling and your performance requirements.

Following is an estimate of a small, medium and large installation of Invenio. The purpose is only to provide a very rough idea about how an Invenio installation could look like.

Small installation:

  • Web/app/background servers and Redis: 1 node

  • Database: 1 node

  • Elasticsearch: 1 node

Medium installation:

  • Load balancer: 1 node

  • Web/app servers and background workers: 2 nodes

  • Database: 1 node

  • Elasticsearch: 3 nodes

  • Redis/RabbitMQ: 1 node

Large installation:

  • Load balancer: 2 node (with DNS load balancing)

  • Web/app servers: 3+ nodes

  • Background workers: 3+ nodes

  • Database: 2 nodes (master/slave)

  • Elasticsearch: 5 nodes (3 data, 2 clients)

  • Redis: 3 nodes (HA setup)

  • RabbitMQ: 2 nodes (HA setup)