Replica set Deployment On Test Mode 为啥是测试模式 实战 先絮叨絮叨操作系统 在一台机器上创建模拟5个节点 进入非db连接模式 建立5个节点的test script 启动所有的节点 配置节点 进入一个节点 配置Replica的config 进行初始化 check心跳和log 查看Replia的详细 查看Secondary Replia的详细 写数据实验 Primary写入 Secondary查看

Replica set Deployment On Test Mode

为啥是测试模式

标题写的比较含糊。配置副本集就配置吧，干嘛还要在一个测试Mode下呢。
其实是这样的，配置一个副本集集群按说应该在几个不同的节点上面配置，但是，一般情况下我们可能会首先在一个模拟环境下去试验，跑一些程序跑一些设置后，再在真正的多节点环境上铺开。所以我们首先先在一个简单的测试模式的基础上去感受一下mongoDB的Replica是个虾米东东。

实战

先絮叨絮叨操作系统

当下，windows系统基本上快从开发OS的第一阵营跌落了。很多的开源产品直接不提供windows的编译命令，比如Flume从2.0开始已经告别windows。而Hadoop从2.X开始也对windows的支持基本上say goodbye了。我去客户现场出差的时候米国和印度的哥们发过来的所有架构和代码都是基于Ubuntu的，我们这边用windows一个个去实验。。。结果啥都打不开。然后就用Cygwin，结果还是很多新版的东西根本不能支持，本想是否可以自己编译windows的命令包，我靠，除非搞研究行了，累死了。最后想想，人家的原生就是Linux你为啥非得移植到windows啊，乖乖的也扔掉windows完了。后来，我以windows要衰败的名义去Ginza还买了一台15寸的mac，嘿嘿嘿，然后没几天就用一个chown命令搞死了机器，当晚重装了mac的系统，觉得这系统太不健壮了，重装居然耗费了一宿也太tm夸张了吧。。。现在mac还躺在柜子里，啥时候想玩swift的时候再拿出来吧。
那，说到这个，mongoDB对于windows的命令支持真的是很不错yeah，业内良心，不打压寡头。呵呵。所以基本上现在我的操作都是windows的命令操作。

在一台机器上创建模拟5个节点

mongoDB的命令有shell命令，还有被封装的java script命令，当然，自己也可以封装各种各样的java script，这个没有尽头的东西，只能靠学用结合了。我的例子是权威指南书中的一个例子，当然，如果按照书中直接跑可能会有疑问，通过我的操作干掉这些疑问吧。

进入非db连接模式

C:\MongoDB\bin>mongo --nodb

C:\MongoDB\bin>mongo --nodb
MongoDB shell version: 2.6.5
>

C:\MongoDB\bin>mongo --nodb
MongoDB shell version: 2.6.5
> rep = new ReplSetTest({"nodes":5})

        "removePartitionDelay" : function (from, to, bidirectional) {
    this.addPartitionDelay(from, to, 0, bidirectional);
},
        "addOneWayPartitionDelay" : function (from, to, delay) {
    this.addPartitionDelay(from, to, delay, false);
},
        "removeOneWayPartitionDelay" : function (from, to) {
    this.addPartitionDelay(from, to, 0, false);
}
}
>

        "removePartitionDelay" : function (from, to, bidirectional) {
    this.addPartitionDelay(from, to, 0, bidirectional);
},
        "addOneWayPartitionDelay" : function (from, to, delay) {
    this.addPartitionDelay(from, to, delay, false);
},
        "removeOneWayPartitionDelay" : function (from, to) {
    this.addPartitionDelay(from, to, 0, false);
}
}
> rep.startSet()

localhost:31000
localhost:31001
localhost:31002
localhost:31003
localhost:31004

C:\MongoDB\bin>mongo localhost:31000

C:\MongoDB\bin>mongo localhost:31000
MongoDB shell version: 2.6.5
connecting to: localhost:31000/test
Server has startup warnings:
2015-03-03T22:46:07.930+0800 ** WARNING: --rest is specified without --httpinter
face,
2015-03-03T22:46:07.930+0800 **          enabling http interface
>

config = {_id: 'testReplSet', members: [ 
{_id: 0, host: 'localhost:31000'},   
{_id: 1, host: 'localhost:31001'}, 
{_id: 2, host: 'localhost:31002'},
{_id: 3, host: 'localhost:31003'},
{_id: 4, host: 'localhost:31004'}] }

> config = {_id: 'testReplSet', members: [
... {_id: 0, host: 'localhost:31000'},
... {_id: 1, host: 'localhost:31001'},
... {_id: 2, host: 'localhost:31002'},
... {_id: 3, host: 'localhost:31003'},
... {_id: 4, host: 'localhost:31004'}] }
{
        "_id" : "testReplSet",
        "members" : [
                {
                        "_id" : 0,
                        "host" : "localhost:31000"
                },
                {
                        "_id" : 1,
                        "host" : "localhost:31001"
                },
                {
                        "_id" : 2,
                        "host" : "localhost:31002"
                },
                {
                        "_id" : 3,
                        "host" : "localhost:31003"
                },
                {
                        "_id" : 4,
                        "host" : "localhost:31004"
                }
        ]
}
>

> rs.initiate(config)

> rs.initiate(config)
{
        "info" : "Config now saved locally.  Should come online in about a minut
e.",
        "ok" : 1
}
>

> rs.isMaster()

> rs.isMaster()
{
        "setName" : "testReplSet",
        "setVersion" : 1,
        "ismaster" : true,
        "secondary" : false,
        "hosts" : [
                "localhost:31000",
                "localhost:31004",
                "localhost:31003",
                "localhost:31002",
                "localhost:31001"
        ],
        "primary" : "localhost:31000",
        "me" : "localhost:31000",
        "maxBsonObjectSize" : 16777216,
        "maxMessageSizeBytes" : 48000000,
        "maxWriteBatchSize" : 1000,
        "localTime" : ISODate("2015-03-03T15:13:44.230Z"),
        "maxWireVersion" : 2,
        "minWireVersion" : 0,
        "ok" : 1
}
testReplSet:PRIMARY>

testReplSet:PRIMARY>

C:\MongoDB\bin>mongo localhost:31001
MongoDB shell version: 2.6.5
connecting to: localhost:31001/test
Server has startup warnings:
2015-03-03T22:46:08.477+0800 ** WARNING: --rest is specified without --httpinter
face,
2015-03-03T22:46:08.477+0800 **          enabling http interface
testReplSet:SECONDARY>

testReplSet:SECONDARY> rs.isMaster()
{
        "setName" : "testReplSet",
        "setVersion" : 1,
        "ismaster" : false,
        "secondary" : true,
        "hosts" : [
                "localhost:31001",
                "localhost:31004",
                "localhost:31003",
                "localhost:31002",
                "localhost:31000"
        ],
        "primary" : "localhost:31000",
        "me" : "localhost:31001",
        "maxBsonObjectSize" : 16777216,
        "maxMessageSizeBytes" : 48000000,
        "maxWriteBatchSize" : 1000,
        "localTime" : ISODate("2015-03-03T15:19:26.231Z"),
        "maxWireVersion" : 2,
        "minWireVersion" : 0,
        "ok" : 1
}
testReplSet:SECONDARY>

C:\MongoDB\bin>mongo localhost:31000
MongoDB shell version: 2.6.5
connecting to: localhost:31000/test
Server has startup warnings:
2015-03-03T22:46:07.930+0800 ** WARNING: --rest is specified without --httpinter
face,
2015-03-03T22:46:07.930+0800 **          enabling http interface
testReplSet:PRIMARY> use testrepl //←①
switched to db testrepl　//←②
testReplSet:PRIMARY> show collections //←③
testReplSet:PRIMARY>

testReplSet:PRIMARY> db.testrepl.insert({"testrepl":"yes"})
WriteResult({ "nInserted" : 1 })
testReplSet:PRIMARY>

testReplSet:PRIMARY> db.testrepl.insert({"testrepl":"yes"})
WriteResult({ "nInserted" : 1 })
testReplSet:PRIMARY> show collections
system.indexes
testrepl
testReplSet:PRIMARY>

testReplSet:PRIMARY> db.testrepl.insert({"testrepl":"yes"})
WriteResult({ "nInserted" : 1 })
testReplSet:PRIMARY> show collections
system.indexes
testrepl
testReplSet:PRIMARY> db.testrepl.find()
{ "_id" : ObjectId("54f5d3164cfd2afe862669f8"), "testrepl" : "yes" }
testReplSet:PRIMARY>

C:\MongoDB\bin>mongo localhost:31001
MongoDB shell version: 2.6.5
connecting to: localhost:31001/test
Server has startup warnings:
2015-03-03T22:46:08.477+0800 ** WARNING: --rest is specified without --httpinter
face,
2015-03-03T22:46:08.477+0800 **          enabling http interface
testReplSet:SECONDARY> db //←①
test　db //←②
testReplSet:SECONDARY> use testrepl
switched to db testrepl
testReplSet:SECONDARY> show collections
2015-03-03T23:35:00.810+0800 error: { "$err" : "not master and slaveOk=false", "
code" : 13435 } at src/mongo/shell/query.js:131　db //←③
testReplSet:SECONDARY> db.testrepl.find()　db //←④
error: { "$err" : "not master and slaveOk=false", "code" : 13435 }　db //←⑤
testReplSet:SECONDARY>

testReplSet:SECONDARY> rs.slaveOk()

testReplSet:SECONDARY> rs.slaveOk()
testReplSet:SECONDARY> show collections
system.indexes
testrepl
testReplSet:SECONDARY> db.testrepl.find()
{ "_id" : ObjectId("54f5d3164cfd2afe862669f8"), "testrepl" : "yes" }
testReplSet:SECONDARY>