参考：https://blog.csdn.net/qq_37142346/article/details/82824132
docker 版本的副本集：参考：https://www.cnblogs.com/cowboys/p/9264494.html
参考这个,比较详细： https://www.cnblogs.com/phpk/p/11121412.html
原文：https://www.cnblogs.com/cowboys/p/9264494.html
docker中部署mongodb副本集
1.基本信息如下
服务器地址 192.168.73.129
副本集名称 rs
容器节点及端口映射
m0 37017:27017
m1 47017:27017
m2 57017:27017
注：机器环境安装docker
2.部署步骤
2.1下载mongo镜像
docker pull mongo
2.2 启动三个节点
docker run --name m0 -p 37017:27017 -d mongo --replSet "rs" docker run --name m1 -p 47017:27017 -d mongo --replSet "rs" docker run --name m2 -p 57017:27017 -d mongo --replSet "rs" |
docker ps -a //查看启动的容器
2.3 连接任意一个节点，进行副本集配置
进入其中一个容器：docker exec -it de242cc5fa5a /bin/bash
连接三个节点中的任意一个,注意ip地址为宿主机ip,我当前的为192.168.73.129
mongo --host 192.168.73.129 --port 37017此时已连接到m0节点，进行副本集配置
var config={
_id:"rs",
members:[
{_id:0,host:"192.168.73.129:37017"},
{_id:1,host:"192.168.73.129:47017"},
{_id:2,host:"192.168.73.129:57017"}
]}；
rs.initiate(config)
或者直接：
rs.initiate({ _id:"rs", members:[{_id:0,host:"192.168.73.129:37017"},{_id:1,host:"192.168.73.129:47017"},{_id:2,host:"192.168.73.129:57017"}]})
如果是添加: rs.add({_id:4, host: "192.168.1.28", priority: 1})
rs.initiate( { "_id": "rs", "members": [ { "_id": 0, "host": "192.168.25.140:27017", "priority": 10 }, { "_id": 1, "host": "192.168.25.141:27017", "priority": 9 }, { "_id": 2, "host": "192.168.18.142:27017", "arbiterOnly": true } ] } )
响应应该类似下面，注意此时命令提示符已经发生变化，由原来的 > 变成了 rs:SECONDARY>
{
"ok" : 1,
"operationTime" : Timestamp(1522810920, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1522810920, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
|
2.4查看副本集配置信息
rs:SECONDARY> rs.conf()
{
"_id" : "rs",
"version" : 1,
"protocolVersion" : NumberLong(1),
"writeConcernMajorityJournalDefault" : true,
"members" : [
{
"_id" : 0,
"host" : "192.168.73.129:37017",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 1,
"host" : "192.168.73.129:47017",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "192.168.73.129:57017",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatIntervalMillis" : 2000,
"heartbeatTimeoutSecs" : 10,
"electionTimeoutMillis" : 10000,
"catchUpTimeoutMillis" : -1,
"catchUpTakeoverDelayMillis" : 30000,
"getLastErrorModes" : {
},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
},
"replicaSetId" : ObjectId("5b3c937896d237ac24a0648e")
}
}
rs:SECONDARY>
|
2.5 查看副本集状态
rs:SECONDARY> rs.status()
{
"set" : "rs",
"date" : ISODate("2018-07-04T09:45:38.110Z"),
"myState" : 2,
"term" : NumberLong(1),
"syncingTo" : "192.168.73.129:37017",
"syncSourceHost" : "192.168.73.129:37017",
"syncSourceId" : 0,
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1530697530, 1),
"t" : NumberLong(1)
},
"readConcernMajorityOpTime" : {
"ts" : Timestamp(1530697530, 1),
"t" : NumberLong(1)
},
"appliedOpTime" : {
"ts" : Timestamp(1530697530, 1),
"t" : NumberLong(1)
},
"durableOpTime" : {
"ts" : Timestamp(1530697530, 1),
"t" : NumberLong(1)
}
},
"lastStableCheckpointTimestamp" : Timestamp(1530697480, 1),
"members" : [
{
"_id" : 0,
"name" : "192.168.73.129:37017",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 967,
"optime" : {
"ts" : Timestamp(1530697530, 1),
"t" : NumberLong(1)
},
"optimeDurable" : {
"ts" : Timestamp(1530697530, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-07-04T09:45:30Z"),
"optimeDurableDate" : ISODate("2018-07-04T09:45:30Z"),
"lastHeartbeat" : ISODate("2018-07-04T09:45:36.221Z"),
"lastHeartbeatRecv" : ISODate("2018-07-04T09:45:36.296Z"),
"pingMs" : NumberLong(0),
"lastHeartbeatMessage" : "",
"syncingTo" : "",
"syncSourceHost" : "",
"syncSourceId" : -1,
"infoMessage" : "",
"electionTime" : Timestamp(1530696579, 1),
"electionDate" : ISODate("2018-07-04T09:29:39Z"),
"configVersion" : 1
},
{
"_id" : 1,
"name" : "192.168.73.129:47017",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 967,
"optime" : {
"ts" : Timestamp(1530697530, 1),
"t" : NumberLong(1)
},
"optimeDurable" : {
"ts" : Timestamp(1530697530, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-07-04T09:45:30Z"),
"optimeDurableDate" : ISODate("2018-07-04T09:45:30Z"),
"lastHeartbeat" : ISODate("2018-07-04T09:45:36.221Z"),
"lastHeartbeatRecv" : ISODate("2018-07-04T09:45:36.219Z"),
"pingMs" : NumberLong(0),
"lastHeartbeatMessage" : "",
"syncingTo" : "192.168.73.129:37017",
"syncSourceHost" : "192.168.73.129:37017",
"syncSourceId" : 0,
"infoMessage" : "",
"configVersion" : 1
},
{
"_id" : 2,
"name" : "192.168.73.129:57017",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 2153,
"optime" : {
"ts" : Timestamp(1530697530, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-07-04T09:45:30Z"),
"syncingTo" : "192.168.73.129:37017",
"syncSourceHost" : "192.168.73.129:37017",
"syncSourceId" : 0,
"infoMessage" : "",
"configVersion" : 1,
"self" : true,
"lastHeartbeatMessage" : ""
}
],
"ok" : 1,
"operationTime" : Timestamp(1530697530, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1530697530, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs:SECONDARY>
|
8、从库默认没有读写权限
1 需要进入从库的mongoDB执行rs.slaveOk();或者db.getMongo().setSlaveOk(); 2 但是但是但是！！！ 3 只有当次生效！只有当次生效！只有当次生效！ 4 如果需要永久生效 可以依次执如下命令 5 find / -name .mongorc.js 6 vim /home/shengyang/.mongorc.js 7 添加内容 8 rs.slaveOk();
强制更换主节点办法
http://www.mongoing.com/docs/tutorial/force-member-to-be-primary.html
1 注： 2 在搭建过程中，遇到一个问题 3 当将两个从节点停掉之后 在主使用rs.stepDown(120)将现有主节点切换为从节点 导致主节点丢失，该情况下 可以将停掉的一个从节点重启，此时主节点会自动选出，一位复制集的规则是必须有两台可用的数据库，才能够自动选举主从节点。 4 另：本篇未涉及投票节点，感兴趣的可自行搜索相关文档即可 5 多讲一句：本篇为4.0.3版本，4.0版本以下的相关命令 可能会失效！ //经测试，个人操作原因，需要在执行 rs.reconfig();时添加"protocolVersion" : 1
比如这样：rs.reconfig( {_id : "rs0", "protocolVersion" : 1, members: [{ _id: 0, host: "192.168.1.64:27017",priority:2 },{ _id: 1, host: "192.168.1.50:27017" },{ _id: 2, host: "192.168.1.51:27017" }]})
如果需要非主节点执行需要添加{ "force": true } 例如 rs.reconfig(cfg, { "force": true })
2.6 客户端工具连接
