MongoDB 单机部署多副本集

爱学习de小馋猫 2020-04-15

1365

最近在参加MongoDB的培训，就用以前的环境搭一下多副本集，感觉挺简单的，不知道是不是我搞错了，先记录下来后面有问题再改吧。

安装好Mongo，可参考之前的文章Linux平台安装MongoDB

进入安装目录

cd usr/local/mongodb

在当前目录下创建三个rs

ljing@ubuntu:/usr/local/mongodb$ mkdir -p rs0/data/db
ljing@ubuntu:/usr/local/mongodb$ mkdir -p rs1/data/db
ljing@ubuntu:/usr/local/mongodb$ mkdir -p rs2/data/db

再分别创建三个log目录

ljing@ubuntu:/usr/local/mongodb$ mkdir -p rs0/log
ljing@ubuntu:/usr/local/mongodb$ mkdir -p rs1/log
ljing@ubuntu:/usr/local/mongodb$ mkdir -p rs2/log

创建三个配置文件 mongodb.cfg 放置在 usr/local/mongodb/rs0 和 rs1 rs2 下

注意修改路径和端口，我配置的 27017 27018 和 27019

dbpath=/usr/local/mongodb/rs0/data/db
logpath=/usr/local/mongodb/rs0/log/mongo.log 
logappend=true
port=27017
fork=true
auth=false
bind_ip=192.168.128.130
journal=true
quiet=true
replSet=upmsSet

开启三个mongo

ljing@ubuntu:/usr/local/mongodb/bin$ ./mongod -f ../rs0/mongodb.cfg 
about to fork child process, waiting until server is ready for connections.
forked process: 2859
child process started successfully, parent exiting
ljing@ubuntu:/usr/local/mongodb/bin$ 
ljing@ubuntu:/usr/local/mongodb/bin$ ./mongod -f ../rs1/mongodb.cfg 
about to fork child process, waiting until server is ready for connections.
forked process: 2953
child process started successfully, parent exiting
ljing@ubuntu:/usr/local/mongodb/bin$ 
ljing@ubuntu:/usr/local/mongodb/bin$ ./mongod -f ../rs2/mongodb.cfg 
about to fork child process, waiting until server is ready for connections.
forked process: 2973
child process started successfully, parent exiting

登陆其中一个

ljing@ubuntu:/usr/local/mongodb/bin$ ./mongo 192.168.128.130
MongoDB shell version: 3.0.6
connecting to: 192.168.128.130/test

查看下数据库

> show databases;
2020-04-15T06:03:43.142-0700 E QUERY    Error: listDatabases failed:{ "note" : "from execCommand", "ok" : 0, "errmsg" : "not master" }
    at Error (<anonymous>)
    at Mongo.getDBs (src/mongo/shell/mongo.js:47:15)
    at shellHelper.show (src/mongo/shell/utils.js:630:33)
    at shellHelper (src/mongo/shell/utils.js:524:36)
    at (shellhelp2):1:1 at src/mongo/shell/mongo.js:47

show databases 报错，因为还没初始化

> use admin 
switched to db admin

定义副本集配置变量，这里的 _id:”upmsSet” 和上面配置文件的参数“ replSet=upmsSet” 要保持一样

> config= {_id:"upmsSet",members:[ 
... ... {_id:0,host:"192.168.128.130:27017"}, 
... ... {_id:1,host:"192.168.128.130:27018"}, 
... ... {_id:2,host:"192.168.128.130:27019"}] 
... ... }
{
"_id" : "upmsSet",
"members" : [
{
"_id" : 0,
"host" : "192.168.128.130:27017"
},
{
"_id" : 1,
"host" : "192.168.128.130:27018"
},
{
"_id" : 2,
"host" : "192.168.128.130:27019"
}
]
}

初始化

> rs.initiate(config);
{ "ok" : 1 }
upmsSet:OTHER> 
upmsSet:SECONDARY> 
upmsSet:SECONDARY> 
upmsSet:PRIMARY>

查看状态

upmsSet:PRIMARY> rs.status()
{
"set" : "upmsSet",
"date" : ISODate("2020-04-15T13:20:26.543Z"),
"myState" : 1,
"members" : [
{
"_id" : 0,
"name" : "192.168.128.130:27017",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 15957,
"optime" : Timestamp(1586956816, 1),
"optimeDate" : ISODate("2020-04-15T13:20:16Z"),
"electionTime" : Timestamp(1586956819, 1),
"electionDate" : ISODate("2020-04-15T13:20:19Z"),
"configVersion" : 1,
"self" : true
},
{
"_id" : 1,
"name" : "192.168.128.130:27018",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 10,
"optime" : Timestamp(1586956816, 1),
"optimeDate" : ISODate("2020-04-15T13:20:16Z"),
"lastHeartbeat" : ISODate("2020-04-15T13:20:26.377Z"),
"lastHeartbeatRecv" : ISODate("2020-04-15T13:20:26.404Z"),
"pingMs" : 0,
"configVersion" : 1
},
{
"_id" : 2,
"name" : "192.168.128.130:27019",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 10,
"optime" : Timestamp(1586956816, 1),
"optimeDate" : ISODate("2020-04-15T13:20:16Z"),
"lastHeartbeat" : ISODate("2020-04-15T13:20:26.377Z"),
"lastHeartbeatRecv" : ISODate("2020-04-15T13:20:26.360Z"),
"pingMs" : 0,
"lastHeartbeatMessage" : "could not find member to sync from",
"configVersion" : 1
}
],
"ok" : 1
}

完成

参考文章：https://www.jianshu.com/p/beebe1f50fc3

mongodb

文章转载自爱学习de小馋猫，如果涉嫌侵权，请发送邮件至：contact@modb.pro进行举报，并提供相关证据，一经查实，墨天轮将立刻删除相关内容。

MongoDB 单机部署多副本集

评论