Replica Set

Doing transaction in MongoDB requires a replica. Sometimes we may want to host the replica ourselves (doing CI or loacl deployment), but can be quite compilcated.

Some docker images made it easier to deploy a replica set.

Both of the 2 images below are provided by truth-worthy organizations, and are constantly updated.

prismagraphql/mongo-single-replica (100k+ Pulls)

This is found in prisma-examples/databases/mognodb/docker-compose.yml.

This tutorial is also very useful.

The docker image has no documentation, I guess it's just used for simpliest testing and CI. Don't use it in production.

bitnami/mongodb (1B+ Pulls)

Search for Setting up replication. Step by step instructions are provided, a docker-compose.yml file is also provided.