Server requirements

Operating system

Recommended	Ubuntu Server 24.04 LTS (what Eurion tests on)
Accepted by the kit	Ubuntu 22.04, Debian 12, RHEL/Rocky/AlmaLinux 9

The server should be a clean installation used only for Eurion. The kit installs Docker from Docker's own package repository and enables the firewall (ufw on Ubuntu/Debian, firewalld on RHEL) and fail2ban for SSH.

You need a user with sudo. The installation runs locally on the server, so you do not need a separate Ansible machine.

Hardware

The kit stops the installation if the server has less than 4 vCPU or 8 GB RAM.

Size	vCPU	RAM	Disk	Comment
Up to about 25 users	4	8 GB	100 GB SSD	Without AI. A newly installed server with no users uses about 4 GB RAM.
25–150 users	8	16 GB	200 GB SSD	Room for video meetings.
150–500 users	16	32 GB	500 GB SSD	Enable PgBouncer and set per-container memory limits, see The configuration file.

Add for optional features:

Feature	Key	Extra
Virus scanning of uploaded files (ClamAV), on by default	features.virus_scan	about 1.5 GB RAM
Editing Office documents in the browser (Collabora)	features.office	1–2 GB RAM, more per open document
AI: meeting minutes and summaries (local language model)	features.ai	16–32 GB RAM and 8 more vCPU; without a graphics card it is slow
Call transcription (Whisper)	features.transcription	a few GB RAM, CPU-heavy

Disk

Files and recordings grow fastest. Allow about 1 GB per user per year, plus space for backups (kept on the same server for 30 days) and for old versions' images, which are kept after an update.

Network

• A public IPv4 address that reaches the server, directly or via port forwarding. It is needed for Let's Encrypt certificates and for calls (TURN and media).
• A domain where you can create A records.
• Outbound internet access. What is needed is listed in DNS and firewall.

Clients

Users only need a web browser. On mobile, the app can be installed on the home screen straight from the browser (from version 1.6.2).