10. Replication

Activity 10.01: Testing a Disaster Recovery Procedure for a MongoDB Database

Solution:

Perform the following steps to complete the activity:

1. Create the directories as follows: C:\sale\sale-prod, C:\sale\sale-dr, C:\sale\sale-ab, and C:\sale\log.

   Note

   For Linux and macOS, the directory names would be like /data/sales/sale-prod, /data/sales/sale-dr…

2. Start the cluster nodes as follows:

   start mongod --port 27001 --bind_ip_all --replSet sale-cluster --dbpath C:\sale\sale-prod --logpath C:\sale\log\sale-prod.log --logappend --oplogSize 50
   start mongod --port 27002 --bind_ip_all --replSet sale-cluster --dbpath C:\sale\sale-dr --logpath C:\sale\log\sale-dr.log --logappend --oplogSize 50
   start mongod --port 27003 --bind_ip_all --replSet sale-cluster --dbpath C:\sale\sale-ab --logpath C:\sale\log\sale-ab.log --logappend --oplogSize 50

3. Connect with mongo shell:

    mongo mongodb://localhost:27001/?replicaSet=sale-cluster

4. Create and activate the cluster...