{
     "_id" : "rs_mongo",
     "version" : 12,
     "members" : [
          {
               "_id" : 0,
               "host" : "mongo1:27017"
          },
          {
               "_id" : 1,
               "host" : "mongo2:27017"
          },
          {
               "_id" : 2,
               "host" : "mongo3:27017",
               "priority" : 0,
               "hidden" : true
          }

     ]
}



{
     "_id" : "rs_mongo",
     "version" : 12,
     "members" : [
          {
               "_id" : 0,
               "host" : "mongo1:27017"
          },
          {
               "_id" : 1,
               "host" : "mongo2:27017"
          },
          {
               "_id" : 2,
               "host" : "mongo3:27017",
               "priority" : 0,
               "hidden" : true
          }

     ]
}





PRIMARY> rs.status()
{
     "set" : "rs_mongo",
     "date" : ISODate("2014-07-24T22:57:32Z"),
     "myState" : 1,
     "syncingTo" : "mongo3:27017",
     "members" : [
          {
               "_id" : 0,
               "name" : "mongo1:27017",
               "health" : 1,
               "state" : 2,
               "stateStr" : "SECONDARY",
               "uptime" : 373527,
               "optime" : {
                    "t" : 1406242652000,
                    "i" : 2
               },
               "optimeDate" : ISODate("2014-07-24T22:57:32Z"),
               "lastHeartbeat" : ISODate("2014-07-24T22:57:32Z"),
               "pingMs" : 0
          },
          {
               "_id" : 1,
               "name" : "mongo2:27017",
               "health" : 1,
               "state" : 1,
               "stateStr" : "PRIMARY",
               "optime" : {
                    "t" : 1406242652000,
                    "i" : 4
               },
               "optimeDate" : ISODate("2014-07-24T22:57:32Z"),
               "self" : true
          },
          {
               "_id" : 2,
               "name" : "mongo3:27017",
               "health" : 1,
               "state" : 2,
               "stateStr" : "SECONDARY",
               "uptime" : 498744,
               "optime" : {
                    "t" : 1406242652000,
                    "i" : 1
               },
               "optimeDate" : ISODate("2014-07-24T22:57:32Z"),
               "lastHeartbeat" : ISODate("2014-07-24T22:57:32Z"),
               "pingMs" : 0
          }
     ],
     "ok" : 1
}