1：修改 /etc/init.d/mongod 把里面的#OPTIONS=” -f $CONFIGFILE –replSet shanliao_base” 注释 再添加修改 OPTIONS=” -f $CONFIGFILE”  然后重启

3：修改 /etc/init.d/mongod 把里面的#OPTIONS=” -f $CONFIGFILE –replSet shanliao_base” 注释去掉 然后注释#OPTIONS=” -f $CONFIGFILE” 然后重启

4：保证一个数据保留做PRIMARY，将其他的mongod的数据全部删除，然后在PRIMARY上执行命令

rsconf = {
“_id” : “shanliao_base”,
“members” : [{
“_id” : 0,
“host” : “192.168.0.42:27017″},{
“_id” : 1,
“host” : “192.168.0.43:27017”},{
“_id” : 2,
“host” : “192.168.0.44:27017”},{
“_id” : 3,
“host” : “192.168.0.45:27017”,
“arbiterOnly” : true}]
}
rs. initiate(rsconf)
rs. initiate(rsconf)

5：连接一个，通过rs.status();查看状态，即完成更改

shanliao_base:PRIMARY> rs.status();
{
“set” : “shanliao_base”,
“date” : ISODate(“2014-01-07T05:57:08Z”),
“myState” : 1,
“members” : [
{
“_id” : 0,
“name” : “192.168.0.42:27017”,
“health” : 1,
“state” : 1,
“stateStr” : “PRIMARY”,
“uptime” : 265,
“optime” : Timestamp(1389074191, 1),
“optimeDate” : ISODate(“2014-01-07T05:56:31Z”),
“self” : true
},
{
“_id” : 1,
“name” : “192.168.0.43:27017”,
“health” : 1,
“state” : 2,
“stateStr” : “SECONDARY”,
“uptime” : 37,
“optime” : Timestamp(1389074191, 1),
“optimeDate” : ISODate(“2014-01-07T05:56:31Z”),
“lastHeartbeat” : ISODate(“2014-01-07T05:57:08Z”),
“lastHeartbeatRecv” : ISODate(“2014-01-07T05:57:07Z”),
“pingMs” : 22,
“lastHeartbeatMessage” : “syncing to: 192.168.0.42:27017”,
“syncingTo” : “192.168.0.42:27017”
},
{
“_id” : 2,
“name” : “192.168.0.44:27017”,
“health” : 1,
“state” : 5,
“stateStr” : “STARTUP2”,
“uptime” : 37,
“optime” : Timestamp(0, 0),
“optimeDate” : ISODate(“1970-01-01T00:00:00Z”),
“lastHeartbeat” : ISODate(“2014-01-07T05:57:08Z”),
“lastHeartbeatRecv” : ISODate(“2014-01-07T05:57:08Z”),
“pingMs” : 23
},
{
“_id” : 3,
“name” : “192.168.0.45:27017”,
“health” : 1,
“state” : 7,
“stateStr” : “ARBITER”,
“uptime” : 37,
“lastHeartbeat” : ISODate(“2014-01-07T05:57:08Z”),
“lastHeartbeatRecv” : ISODate(“2014-01-07T05:57:08Z”),
“pingMs” : 24
}
],
“ok” : 1
}