数据库-编程day05mongodb json2其他集实验

MongoDB1个主节点，2个从节点，从节点中其中是一个是仲裁节点(Arb)。root用户,创建三个$mkdir–p$mkdir–p$mkdir–pmongod$nohup/usr/local/mongodb/bin/mongod--replSetapplication--dbpath/data/node1/--port9927--oplogSize1024&$nohup/usr/local/mongodb/bin/mongod--replSetapplication--dbpath/data/node2/--port9928--oplogSize1024&$nohup/usr/local/mongodb/bin/mongod--replSetapplication--dbpath/data/arbiter/--port9929--oplogSize1024&其中application是副本集的名称，节点必须相同，–dbpath指定数据库路径，–port9927s:$mongo>config={_id:"application",members:rs.addrs.addArb函数来实现同样的操作。然后需要用这个表作为参数初始化9927s执行：>{"info":"Confignowsavedlocally. Shouldcomeonlineinaboutaminute.","ok":1}ok11分钟左右(^-)，9927s回车执行命令确认配>{"setName":"ismaster":true,"secondary":false,"hosts":["arbiters":"primary":"localhost:9927","me":"localhost:9927","maxBsonObjectSize": "ok":}1个元素，primarykey9927的端口的实sapplication:PRIMARY，查看更详细的信息：{"set":"myState":"members":{"_id":"name":"localhost:9927","health":1,"state":"stateStr":"PRIMARY","uptime":430,"optime":Timestamp( ,1),"optimeDate":ISODate("2016-09-04T05:21:22Z"),"self":{"_id":"name":"localhost:9928","health":1,"state":"stateStr":{}"ok":}

"uptime":"optime":Timestamp( ,1),"optimeDate":ISODate("2016-09-04T05:21:22Z"),"lastHeartbeat":ISODate("2016-09-04T05:24:14Z"),"lastHeartbeatRecv":ISODate("2016-09-04T05:24:15Z"),"Ms":0,"_id":"name":"localhost:9929","health":1,"state":"stateStr":"ARBITER","uptime":170,"lastHeartbeat":ISODate("2016-09-04T05:24:14Z"),"lastHeartbeatRecv":ISODate("2016-09-04T05:24:15Z"),"Ms":0{"_id":"application","version":1,"members":{"_id":"host":{"_id":"host":{"_id":"host":"localhost:9929","arbiterOnly":true}]}application:PRIMARY>db.users.insert({username:'yekai',age:34})application:PRIMARY>db.users.find(){"_id": ff587"),"username":"yekai","age":34$mongolocalhost:9928application:SECONDARY>showcollections;SunSep 413:39:46.607error:{"$err":"notmasterandslaveOk=false","code":13435}at发发现 抛出了异常，显示slaveOK为false， application:SECONDARY>rs.slaveOk()application:SECONDARY>showcollections;{"_id": ff587"),"username":"yekai","age":34notmaster9929端口，可以看到仲裁节点的提示符号@:~$mongolocalhost:9929MongoDBsversion:2.4.9connectingto:localhost:9929/test9927{"_id": ff587"),"username":"yekai","age":34application:PRIMARY>db.users.find(){"_id": ff587"),"username":"yekai","age":34{"_id": de0981fa09"),"username":"fuhongxue","age":259927 :~$mongolocalhost:9927MongoDBsversion:2.4.9connectingto:localhost:9927/testapplication:SECONDARY>showtables;SunSep 413:55:33.333error:{"$err":"notmasterandslaveOk=false","code":13435}atsrc/mongo/s/query.js:128application:SECONDARY>rs.s