Four groups, always in this order, each listing its nodes with a role, a state and whether it is healthy, plus a note on how the group works. For the database, leader is the node taking writes, and each node's role, state and replication lag come live from the cluster itself; unreachable means that node didn't answer. For the mailbox servers, leader is the active server's address.
Good to know
For the poolers, mailbox servers and edges, healthy only means the node's agent checked in within the last 3 minutes, not that the service itself answered.
The edges are not a failover group. Exactly one should be powered on at a time, and their note says whether that is so.
Each call asks the database nodes directly, so one that is down can slow the answer by several seconds.
