MongoDB HA, What Can Go Wrong?

Redundancy and high availability are the basis for all production deployments. With MongoDB this can be achieved by deploying a replica set. In this talk, we’ll explore how MongoDB replication works and what the components are of a replica set. Using examples of wrong deployment configurations, we will highlight how to properly run replica sets in production, whether it comes to on-premise deployment or in the cloud.

– How MongoDB replication works
– Replica sets components/deployment typologies
– Practices for wrong deployment configuration
– Hidden nodes, Arbiter nodes, Priority 0 nodes
– Availability zones and HA in a single region
– Monitoring replica sets status