Migrate from Rocket.Chat to Mattermost
The documented Rocket.Chat to Mattermost path: dumping the MongoDB database, transforming it with mmetl, importing with mmctl, and planning trial runs because the migration is best effort.
Migrating to Mattermost
Moving chat history and Mattermost databases onto a supported self-hosted Mattermost, using the migration paths Mattermost documents.
Migrate Mattermost from GitLab Omnibus to a standalone installation
Moving a Mattermost bundled with GitLab Omnibus to its own server and PostgreSQL before GitLab removes it, with the prerequisites, downtime window and backups the documented procedure requires.
Migrate Mattermost from MySQL to PostgreSQL
Moving a Mattermost database off MySQL, now unsupported, with the migration-assist tool or a manual pgloader process, including sizing, running against a copy and plugin data for Boards, Playbooks and Calls.
