Software and hardware requirements#

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This guide outlines minimum software and hardware requirements for deploying Mattermost. Requirements may vary based on utilization and observing performance of pilot projects is recommended prior to scale out.

Deployment overview#

Please see the Mattermost Deployment Overview documentation for a summary of software systems whose requirements are described in this document.

Mattermost network diagram shows how the components can be deployed. Includes optional configurations for scaling for larger enterprise organizations.

Software requirements#

Client software#

Desktop apps#

Operating System

Self-Hosted Technical Requirement

Cloud Technical Requirement

Windows

Windows 10+

Windows 10+

Mac

macOS 12+

macOS 12+

Linux

Ubuntu LTS releases 22.04 or later

Ubuntu LTS releases 22.04 or later

Though not officially supported, the Linux desktop app also runs on RHEL/CentOS 7+.

Note

PC web#

Browser

Self-Hosted Technical Requirement

Cloud Technical Requirement

Chrome

v130+

v130+

Firefox

v115+

v115+

Safari

v17+

v17+

Edge

v130+

v130+

* Internet Explorer (IE11) is no longer supported. We recommend using the Mattermost desktop app or another supported browser. See this forum post to learn more.

Mobile apps#

Operating System

Technical Requirement

iOS

iPhone 6s devices and later with iOS 13.4+

Android

Android devices with Android 7+

Note

Mobile web#

Browser

Technical Requirement

iOS

iOS 13.4+ with Safari 17+ or Chrome 130+

Android

Android 7+ with Chrome 130+

Email client#

  • Desktop clients: Outlook 2010+, Apple Mail version 7+, Thunderbird 38.2+

  • Web based clients: Entra ID, Outlook, Gmail, Yahoo, AOL

  • Mobile clients: iOS Mail App (iOS 7+), Gmail Mobile App (Android, iOS)

Server software#

Mattermost server operating system#

  • Ubuntu, Debian Buster, CentOS 6+, CentOS 7+, RedHat Enterprise Linux 7+, Oracle Linux 6+, Oracle Linux 7+.

  • Using the Mattermost Docker deployment on a Docker-compatible operating system (Linux-based OS) is still recommended.

While community support exists for Fedora, FreeBSD, and Arch Linux, Mattermost does not currently include production support for these platforms.

Database software#

  • PostgreSQL 11.0+

  • MySQL 8.0.12+ (see note below on MySQL 8 support)

Amazon Aurora equivalents of both PostgreSQL and MySQL are also supported.

See the Migrate from MySQL to PostgreSQL product documentation for details on migrating from MySQL to PostgreSQL.

MariaDB v10+ no longer functions as a MySQL drop-in replacement, and it’s not supported for Mattermost due to the requirement of MySQL 5.7.12. Prior versions of MariaDB were not officially supported but may have functioned in older Mattermost releases. If you are running MariaDB now, migrating from MariaDB to the MySQL equivalent is recommended.

Deployments requiring searching in Chinese, Japanese, and Korean languages require MySQL 5.7.6+ and the configuration of ngram Full-Text parser. For searching two characters, you will also need to set ft_min_word_len and innodb_ft_min_token_size to 2 and restart MySQL. See CJK discussion for details.

Search limitations on PostgreSQL:

  • Email addresses do not return results.

  • Hashtags or recent mentions of usernames containing a dash do not return search results.

  • Terms containing a dash return incorrect results as dashes are ignored in the search query.

  • If any of the above is an issue, you can either enable the Elasticsearch feature or install MySQL instead.

Search limitations on MySQL:

  • Hashtags or recent mentions of usernames containing a dot do not return search results.

  • The migration system requires the MySQL database user to have additional EXECUTE, CREATE ROUTINE, ALTER ROUTINE and REFERENCES privileges to run schema migrations.

MySQL 8 Support#

In MySQL 8.0.4, the default authentication plugin was changed from mysql_native_password to caching_sha2_password. Therefore, you will need to enable mysql_native_password by adding the following entry in your MySQL configuration file:

[mysqld]
default-authentication-plugin=mysql_native_password

In MySQL 8, the default collation changed to utf8mb4_0900_ai_ci (https://dev.mysql.com/doc/mysqld-version-reference/en/optvar-changes-8-0.html). Therefore, if you update your MySQL installation to version 8, you’ll need to convert your database tables to use the new default collation:

ALTER TABLE table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;

If this change isn’t made, tables in the database may end up having different collations which will cause errors when executing queries.

In MySQL versions 8.0.0 - 8.0.11 ADMIN is a reserved keyword, which is why our requirement for MySQL is version 8.0.12.

MySQL 8.0.22 contains an issue with JSON column types changing string values to integers which is preventing Mattermost from working properly. Users are advised to avoid this database version.

Hardware requirements#

Usage of CPU, RAM, and storage space can vary significantly based on user behavior. These hardware recommendations are based on traditional deployments and may grow or shrink depending on how active your users are.

Moreover, memory requirements can be driven by peak file sharing activity. Recommendation is based on default 50 MB maximum file size, which can be adjusted from the System Console. Changing this number may change memory requirements.

For deployments larger than 2,000 users, it is recommended to use the Mattermost open source load testing framework to simulate usage of your system at full scale: https://github.com/mattermost/mattermost-load-test-ng.

Mattermost supports any 64-bit x86 processor architecture.

Hardware requirements for team deployments#

Most small to medium Mattermost team deployments can be supported on a single server with the following specifications based on registered users:

  • 1 - 1,000 users - 1 vCPU/cores, 2 GB RAM

  • 1,000 - 2,000 users - 2 vCPUs/cores, 4 GB RAM

Hardware requirements for enterprise deployments (multi-server)#

Scale requirements#

For Enterprise Edition deployments with a multi-server setup, see our scaling guide.

It is highly recommended that pilots are run before enterprise-wide deployments in order to estimate full scale usage based on your specific organizational needs. You can use the Mattermost open source load testing framework to simulate usage of your system: https://github.com/mattermost/mattermost-load-test-ng.

Mattermost’s performance monitoring tools can be used for detailed performance measurements and to inspect the running system to ensure sizing and installation is correct.

System requirements#

For Enterprise Edition deployments with a multi-server setup, we highly recommend the following systems to support your Mattermost deployment:

  • Prometheus to track system health of your Mattermost deployment, through performance monitoring feature available in Mattermost Enterprise.

  • Grafana to visualize the system health metrics collected by Prometheus with the performance monitoring feature. Grafana 5.0.0 and later is recommended.

  • Elasticsearch to support highly efficient database searches in a cluster environment. Elasticsearch v7.17+ is supported, and Elasticsearch v8.x or Opensource is recommended from Mattermost v9.11. Learn more here.

  • MinIO or AWS S3. Mattermost is compatible with object storage systems which implement the S3 API. Other S3-compatible systems may work, but are not officially supported. Learn more about file storage configuration options in our documentation.