ServerSelectionTimeoutError:

[Simpson877]

there is a error when i want to save a oplog.timestmap ,here is command:
mongo-connector -m 'mongodb://user:password@192.168.166.1:27017,192.168.166.2:27017,192.168.166.3:27017/admin?authSource=admin&replicaSet=replica&readPreference=secondary' --no-dump

There error is :
ServerSelectionTimeoutError: 192.168.166.10:27017: [Errno 110] Connection timed out, Timeout: 30s, Topology Description: <TopologyDescription id: 60472a1dc68f740f4a2d4012, topology_type: ReplicaSetNoPrimary, servers: [<ServerDescription (u'192.168.166.10', 27017) server_type: Unknown, rtt: None, error=AutoReconnect(u'192.168.166.10:27017: [Errno 110] Connection timed out',)>]>

The host 192.168.166.10 is not my mongodb machine,it's seem that mongo-connector choose a server to connect by random,what should i can deal with?