mamid

What is MAMID?

MAMID is a manager for MongoDB database clusters, facilitating creation, administration and monitoring of Replica Set deployments. It was created as a student project for Praxis der Softwareentwicklung (software engineering) at the Karlsruhe Institute of Technology.

Explicit support for volatile storage on primary Replica Set members with lower-prioritized secondaries on persistent storage is a key differentiator of MAMID.

System Components

Master

• Monitors the Slaves
• Inserts Mongod instances into Replica Sets as needed while optimizing availability by respecting shared risks of failure
• Transfers Mongod instances to other Slaves on user request (e.g. in case of failure)

Slave

• Spawns and kills Mongod instances
• Reports their status to the Master
• Accepts the configuration from the Master and applies it to the Mongods and their Replica Sets

Notifier

• Sends email notifications in case of problems e.g. a slave is down

Development/Testing Setup

Development Workflow

Installation on a Productive System