Platform · Fleet & Topology
Cluster shape, and what changed in it.
Topology is tracked as history rather than a current-state picture, so a failover last Tuesday is something you can review instead of reconstruct.
What is tracked
Six topologies, understood as topologies
Standalone, replication clusters, Galera, InnoDB Cluster, replica sets and sharded clusters — each with the roles and state that engine actually has, not a generic node list.
Elections recorded as events
Every membership change and term increment is kept with its timestamp. When someone asks why writes moved at 02:14, the answer is a record, not an inference from logs.
Inventory that survives cloud networking
Drift detection compares inventory against reality, and understands that a private node behind NAT will never match its public address — so it reports genuine drift rather than crying wolf permanently.
Front ends probed too
A router or mongos fronting a healthy primary is its own failure domain. Reachability is checked for those, not just the data-bearing nodes.
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