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Mattermost

Mattermost

v11.5.1

Self-hosted team messaging platform, alternative to Slack

Install

$curl -fsSL https://virtua.sh/i/mattermost | bash
No server?Virtua.Cloud →

What's included

  • Mattermost 11.5.1 (fully configured, ready to use)
  • Caddy web server with auto-HTTPS
  • PostgreSQL database
  • Automated admin and team setup

After install

  • Login at the URL shown with admin credentials
  • No setup wizard exposed to the internet
  • Invite team members from the System Console
  • Custom domain: MATTERMOST_HOST=chat.example.com

Supported Operating Systems

Ubuntu 24Ubuntu 25Debian 12Debian 13Rocky 9Rocky 10Alma 9Alma 10

Requirements

RAM
2GB minimum
Disk
10GB minimum

Configuration

VariableDefaultDescription
MATTERMOST_HOSTserver hostnameDomain name or IP. Domains get auto-HTTPS via Let's Encrypt.
MATTERMOST_ADMIN_USERadminMattermost admin username
MATTERMOST_ADMIN_PASSrandom 24-charMattermost admin password
MATTERMOST_ADMIN_EMAILadmin@hostnameMattermost admin email
MATTERMOST_DB_PASSrandom 24-charPostgreSQL password
MATTERMOST_TEAM_NAMEmainInitial team name
8 installsOfficial website →

Changelog

v1.0.02026-04-02
  • Initial release with Caddy + PostgreSQL
  • Tarball-based install (x86_64)
  • CLI-based admin and team setup (no web wizard exposed)
  • Auto-HTTPS via Let's Encrypt
  • Open signups disabled by default