dbSizeInUse is the size of the backend database logically in use, in bytes, of the responding member.
dbSizeQuota is the configured etcd storage quota in bytes (the value passed to etcd instance by flag --quota-backend-bytes)
downgradeInfo indicates if there is downgrade process.
errors contains alarm/health information and status.
isLearner indicates if the member is raft learner.
leader is the member ID which the responding member believes is the current leader.
raftAppliedIndex is the current raft applied index of the responding member.
raftIndex is the current raft committed index of the responding member.
raftTerm is the current raft term of the responding member.
storageVersion is the version of the db file. It might be updated with delay in relationship to the target cluster version.
version is the cluster protocol version used by the responding member.
dbSize is the size of the backend database physically allocated, in bytes, of the responding member.