If you bump into this error while trying to write to Mongodb, we basically need to setup our mongodb replica set. Then use the following link below to setup the cluster https://www.mongodb.com/compatibility/deploying-a-mongodb-cluster-with-docker On Windows, you may need to make some slight changes to your command to configure your replica set Try this - I have replace double quote with single quote near --eval docker exec -it mongo1 mongosh --eval 'rs.initiate({_id: \"myReplicaSet\", members: [ {_id: 0, host: \"mongo1\"}, {_id: 1, host: \"mongo2\"}, {_id: 2, host: \"mongo3\"} ] })' After you run command above, you will get a connection string. Use MongoDB compass to try to connect via this connectionstring mongodb://127.0.0.1:27017/directConnection=true&serverSelectionTimeoutMS=2000&appName=mongosh+1.10.1 If you're able to connect, you're all set. You can start connecting to ...