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NOTE: All Linux Commands in this document are run at root level: you need access to root via su or sudo -i
ie. This document will follow the MongoDB upgrade path from 3.4 → 3.6 → 4.0 → 4.2, with the document structured as follows:
- Prerequisites
- Upgrade Preparation
- Upgrade from MongoDB 3.4 to MongoDB 3.6
- Upgrade from MongoDB 3.6 to MongoDB 4.0
- Upgrade from MongoDB 4.0 to MongoDB 4.2
- Services Restart
- Clean-up
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