总结一下windows 64 mongoDB 集群
至少要求三个mongo ,本次搞了四个
，后面又在另外一个实例中增加一个，步骤1：
新建文件夹：data用的
E:/diange/MongoDB/data/b/r1
E:/diange/MongoDB/data/b/r2
E:/diange/MongoDB/data/b/r3
E:/diange/MongoDB/data/b/r4
新建文件夹：给logs用的
E:/diange/MongoDB/logs/b
2、这里需要打开4个cmd窗口分别 cd到同一个实例下启动mongo
mongod --dbpath E:/diange/MongoDB/data/b/r1 --port 27108 --replSet myrepl --logappend --logpath E:/diange/MongoDB/logs/b/r1.log --oplogSize 64
mongod --dbpath E:/diange/MongoDB/data/b/r2 --port 27109 --replSet myrepl --logappend --logpath E:/diange/MongoDB/logs/b/r2.log --oplogSize 64
mongod --dbpath E:/diange/MongoDB/data/b/r3 --port 27110 --replSet myrepl --logappend --logpath E:/diange/MongoDB/logs/b/r3.log --oplogSize 64
mongod --dbpath E:/diange/MongoDB/data/b/r4 --port 27111 --replSet myrepl --logappend --logpath E:/diange/MongoDB/logs/b/r4.log --oplogSize 64
3、新打开一个cmd窗口，cd到mongo文件夹bin目录下，输入命令,链接任意一个启动的mongo
命令如下：mongo 172.16.90.29:27108
4、然后输入命令设置集群配置
var myrepl={
_id:'myrepl',
members:[
{_id:0, host:'172.16.90.29:27108'},
{_id:1, host:'172.16.90.29:27109'},
{_id:2, host:'172.16.90.29:27110'},
{_id:3, host:'172.16.90.29:27111'}]
}
rs.initiate(myrepl);
5、验证集群配置
输入命令rs.status();
查看集群状态
结果如下：
myrepl:PRIMARY> rs.status();
{
"set" : "myrepl",
"date" : ISODate("2015-05-19T10:14:29Z"),
"myState" : 1,
"members" : [
{
"_id" : 0,
"name" : "172.16.90.29:27108",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 322,
"optime" : Timestamp(1432030448, 1),
"optimeDate" : ISODate("2015-05-19T10:14:08Z"),
"lastHeartbeat" : ISODate("2015-05-19T10:14:29Z"),
"lastHeartbeatRecv" : ISODate("2015-05-19T10:14:28
"pingMs" : 0,
"syncingTo" : "172.16.90.29:27110"
},
{
"_id" : 1,
"name" : "172.16.90.29:27109",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 433,
"optime" : Timestamp(1432030448, 1),
"optimeDate" : ISODate("2015-05-19T10:14:08Z"),
"lastHeartbeat" : ISODate("2015-05-19T10:14:28Z"),
"lastHeartbeatRecv" : ISODate("2015-05-19T10:14:28
"pingMs" : 0,
"syncingTo" : "172.16.90.29:27110"
},
{
"_id" : 2,
"name" : "172.16.90.29:27110",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 435,
"optime" : Timestamp(1432030448, 1),
"optimeDate" : ISODate("2015-05-19T10:14:08Z"),
"electionTime" : Timestamp(1432030115, 1),
"electionDate" : ISODate("2015-05-19T10:08:35Z"),
"self" : true
},
{
"_id" : 3,
"name" : "172.16.90.29:27111",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 21,
"optime" : Timestamp(1432030448, 1),
"optimeDate" : ISODate("2015-05-19T10:14:08Z"),
"lastHeartbeat" : ISODate("2015-05-19T10:14:28Z"),
"lastHeartbeatRecv" : ISODate("2015-05-19T10:14:29
"pingMs" : 0,
"syncingTo" : "172.16.90.29:27110"
}
],
"ok" : 1
}
6、如果需要新增节点的话，也可以cd 到新的实例下或者在相同的实例下，重复上述步骤如下：
新开cmd窗口
cd 到 e:/zxdg/mongo/bin
mongod --dbpath E:/点歌/MongoDB/data/b/r5 --port 27112 --replSet myrepl --logappend --logpath E:/diange/MongoDB/logs/b/r4.log --oplogSize 64
链接任意的一个mongo, mongo 172.16.90.29:27108
链接成功后，rs.status();
查一下哪个节点是主节点，然后，退出当前节点的连接，然后连接主节点输入一下内容
重新设置集群参数
var myrepl={
_id:'myrepl',
members:[
{_id:0, host:'172.16.90.29:27108'},
{_id:1, host:'172.16.90.29:27109'},
{_id:2, host:'172.16.90.29:27110'},
{_id:3, host:'172.16.90.29:27111'}，
{_id:4, host:'172.16.90.29:27112'}]
}
rs.reconfig(myrepl);
然后验证就可以了
注意：代码里连mongo时，如果链接没有try，primary节点关闭的话，会报异常，关闭secondary
节点不会有影响
所以，还是要在获取mongo连接时，try catch一下，这样不管你关哪个节点，程序都能正常执行
有很多命令可以用，上网搜一下即可
linux环境的集群方式，参照：
http://blog.csdn.net/luonanqin/article/details/8497860
博客写的很详细