1、进入容器后，默认为/etc/mongod.conf;找到/data/db，创建mongod.conf，添加配置內容：
①、PRIMARY库：
storage:
dbPath: /data/db/mongodb-data #根据自己的实际目录设定。
journal:
enabled: true
systemLog:
destination: file
logAppend: true
path: /data/db/mongodb-log/mongodb.log
processManagement:
fork: true
pidFilePath: /var/run/mongod.pid
net:
port: 27021 #容器需要连接mongo的port
bindIp: 0.0.0.0
replication:
replSetName: "rs-smy" #副本集名称，需要在启动mongo容器的时候指定。
security:
keyFile:/data/db/mongodb/mongodb-keyfile/mongodbkey #增加权限认证
②、SECONDARY库：
storage:
dbPath: /data/db/mongodb-data #根据自己的实际目录设定。
journal:
enabled: true
systemLog:
destination: file
logAppend: true
path: /data/db/mongodb-log/mongodb.log
processManagement:
fork: true
pidFilePath: /var/run/mongod.pid
net:
port: 27022 #容器需要连接mongo的port
bindIp: 0.0.0.0
replication:
replSetName: "rs-smy" #副本集名称，需要在启动mongo容器的时候指定
security:
keyFile:/data/db/mongodb/mongodb-keyfile/mongodbkey #增加权限认证
③、mongod_Arbiter.conf:
systemLog:
destination: file
logAppend: true
path: /data/db/arbiter/log/arbiter.log
storage:
dbPath:/data/db/arbiter/data
journal:true
enabled:true
processManagement:
fork: true
pidFilePath: /var/run/arbiter.pid
net:
port: 27023 #欲启动的端口
bindIp: 0.0.0.0
replication:
replSetName: "rs-smy"
security:
keyFile:/data/db/mongodb/mongodb-keyfile/mongodbkey
2、重启docker:sudo docker restart<container _id>
3、启动两个mongodb进程：A、sudo docker run --name pmdb45 -m 4g --cpus=2 -p 27021:27017 -v $PWD/db:/data/db -d hub.docker.com/percona-server-mongodb:latest --replSet rs-smy
B、 sudo docker run --name pmdb46 -m 4g --cpus=2 -p 27022:27017 -v $PWD/db:/data/db -d hub.docker.com/percona-server-mongodb:latest --replSet rs-smy
如果需要再加一个secondary,则在primary节点上用:rs.add(“host:ip”)
4、进入mongodb docker：docker exec –it <container_id> bash
5、进入要作为master数据库的mongodb shell：mongo IP1:27021/admin
6、添加并初始化副本集信息：rs.initiate( {_id: "rs-smy",members: [{ _id: 0, host: "IP1:27021" },{ _id: 1, host: "IP2:27022" },{_id: 2, host: "IP3:27023}] })，成功后部分信息显示如下：
>rs.initiate( {_id: "rs-smy",members: [{ _id: 0, host: "IP1:27021" },{ _id: 1, host: "IP2:27022" },{_id: 2, host: "IP3:27023}] })
{
"ok" : 1,
"operationTime" : Timestamp(1573810405, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1573810405, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
7、查看状态信息：
rs-smy:PRIMARY> rs.status();
{
"set" : "rs-smy",
"date" : ISODate("2019-11-15T10:01:51.969Z"),
"myState" : 1,
"term" : NumberLong(1),
"syncingTo" : "",
"syncSourceHost" : "",
"syncSourceId" : -1,
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1573812109, 1),
"t" : NumberLong(1)
},
"readConcernMajorityOpTime" : {
"ts" : Timestamp(1573812109, 1),
"t" : NumberLong(1)
},
"appliedOpTime" : {
"ts" : Timestamp(1573812109, 1),
"t" : NumberLong(1)
},
"durableOpTime" : {
"ts" : Timestamp(1573812109, 1),
"t" : NumberLong(1)
}
},
"lastStableCheckpointTimestamp" : Timestamp(1573812099, 1),
"members" : [
{
"_id" : 0,
"name" : "IP1:27021",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 1975,
"optime" : {
"ts" : Timestamp(1573812109, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2019-11-15T10:01:49Z"),
"syncingTo" : "",
"syncSourceHost" : "",
"syncSourceId" : -1,
"infoMessage" : "",
"electionTime" : Timestamp(1573810417, 1),
"electionDate" : ISODate("2019-11-15T09:33:37Z"),
"configVersion" : 1,
"self" : true,
"lastHeartbeatMessage" : ""
},
{
"_id" : 1,
"name" : "IP2:27022",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 1338,
"optime" : {
"ts" : Timestamp(1573812109, 1),
"t" : NumberLong(1)
},
"optimeDurable" : {
"ts" : Timestamp(1573812109, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2019-11-15T10:01:49Z"),
"optimeDurableDate" : ISODate("2019-11-15T10:01:49Z"),
"lastHeartbeat" : ISODate("2019-11-15T10:01:50.652Z"),
"lastHeartbeatRecv" : ISODate("2019-11-15T10:01:50.650Z"),
"pingMs" : NumberLong(1),
"lastHeartbeatMessage" : "",
"syncingTo" : "IP1:27021",
"syncSourceHost" : "IP1:27021",
"syncSourceId" : 0,
"infoMessage" : "",
"configVersion" : 1
}
],
"ok" : 1,
"operationTime" : Timestamp(1573812109, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1573812109, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
8、添加权限认证：
rs-smy:PRIMARY> db.createUser({user:"mongo",pwd:"mongo",roles:["root"]})
执行结果为：
Successfully added user: { "user" : "mongo", "roles" : [ "root" ] }
※ 测试同步复制：1、连接到PRIMARY节点并创建例子：rs-smy:PRIMARY> dbpercona
rs-smy:PRIMARY> db.percona.insert({id: 200})
WriteResult({ "nInserted" : 1 })
rs-smy:PRIMARY> db.percona.find()
{ "_id" : ObjectId("5dcfa4b9103a69d6d277dba4"), "id" : 200 }
2、在另外的CVM登陆到SECONDARY节点：mongo IP3:27022
连接到SECONDARY节点并查找相同的文档：
rs-smy:SECONDARY> use percona
switched to db percona
rs-smy:SECONDARY> db.percona.find()
{ "_id" : ObjectId("5dcfa4b9103a69d6d277dba4"), "id" : 200 }，可以看到SECONDARY已经同步了PRIMARY相同文档的数据了。
注：在SECONDARY节点上，需要rs.slaveOk(),读取SECONDARY节点上的数据,默认无法读取。
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