description: Primary mismatched me uri: mongodb://localhost:27017/?replicaSet=rs phases: - responses: - - localhost:27017 - me: a:27017 hosts: - a:27017 - b:27017 ismaster: true ok: 1 setName: rs minWireVersion: 0 maxWireVersion: 6 outcome: # Both of the hosts in the primary description are added to the topology. # Existing server (localhost:27017) is removed from topology because # its address is not in the list of hosts returned by the primary. servers: a:27017: setName: type: Unknown b:27017: setName: type: Unknown setName: rs topologyType: ReplicaSetNoPrimary logicalSessionTimeoutMinutes: