故障案例--mongodb添加副本集成员报错

现象：

      之前有一对2.6的副本集为A，一对3.0的副本集为B，2.6上有业务数据，想将其升级为3.0，于是做的跨版本副本集，到时候再做业务切换。在执行rs.add命令后报错

"name" : "10.10.69.181:28081",
"health" : 0,
"state" : 8,
"stateStr" : "(not reachable/healthy)",
"uptime" : 0,
"optime" : Timestamp(0, 0),
"optimeDate" : ISODate("1970-01-01T00:00:00Z"),
"lastHeartbeat" : ISODate("2016-04-14T10:14:18Z"),
"lastHeartbeatRecv" : ISODate("1970-01-01T00:00:00Z"),
"pingMs" : 0,
"lastHeartbeatMessage" : "Our set name of udb-obtbgp does not match name udb-m5i5h5 reported by remote node"
}