mongodb副本集搭建以及增减机器

# mongodb.conf

replSet = replsetname

mongod --replSet "replsetname"

2.2 mongo shell

$ ./bin/mongo

> rs.initiate():

> rs.conf();

{
   "_id" : "replsetname",
   "version" : 1,
   "members" : [
      {
         "_id" : 1,
         "host" : "mongodb0.example.net:27017"
      }
   ]
}

> rs.add("mongodb1.example.net")

3. 查看副本集状态

> rs.status() 

 {
        "set" : "replisetname",
        "date" : ISODate("2014-08-23T07:43:51Z"),
        "myState" : 2,
        "members" : [
                {
                        "_id" : 0,
                        "name" : "mongodb0.example.net:2701",
                        "health" : 1,
                        "state" : 2,
                        "stateStr" : "SECONDARY",
                        "uptime" : 3816405,
                        "optime" : Timestamp(1408335342, 1),
                        "optimeDate" : ISODate("2014-08-18T04:15:42Z"),
                        "lastHeartbeat" : ISODate("2014-08-23T07:43:51Z"),
                        "lastHeartbeatRecv" : ISODate("2014-08-23T07:43:50Z"),
                        "pingMs" : 1,
                },

4. 删除一个节点

rs.remove("mongod3.example.net:27017")