MongoDB Cluster Service Layer
Health of critical services of the MongoDB cluster database server -eg. replication - are monitored and reported by this layer. Additionally, the tests mapped to this layer monitor the connection usage of the server, its availability and connectivity, and also the details of the nodes on the cluster. The tests associated with this layer also provide insights into the availability of cluster and status of nodes in the cluster.
Figure 1 : The list of tests associated with the MongoDB Cluster Service Layer