3. 配置分片副本集

3.1 设置第一个分片副本集

(三台机器)设置第一个分片副本集

配置文件

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vi /usr/local/mongodb/conf/shard1.conf

#配置文件内容
#——————————————–
pidfilepath = /usr/local/mongodb/shard1/log/shard1.pid
dbpath = /usr/local/mongodb/shard1/data
logpath = /usr/local/mongodb/shard1/log/shard1.log
logappend = true

bind_ip = 0.0.0.0
port = 27001
fork = true
 
#副本集名称
replSet = shard1
 
#declare this is a shard db of a cluster;
shardsvr = true
 
#设置最大连接数
maxConns = 20000

启动三台服务器的shard1 server

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mongod -f /usr/local/mongodb/conf/shard1.conf

登陆任意一台服务器，初始化副本集(除了192.168.252.123)

连接 MongoDB

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mongo --port 27001

使用admin数据库

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use admin

定义副本集配置

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config = {
    _id : "shard1",
     members : [
         {_id : 0, host : "192.168.252.121:27001" },
         {_id : 1, host : "192.168.252.122:27001" },
         {_id : 2, host : "192.168.252.123:27001" , arbiterOnly: true }
     ]
 }

初始化副本集配置

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rs.initiate(config)

响应内容如下

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> use admin
switched to db admin
> config = {
...     _id : "shard1",
...      members : [
...          {_id : 0, host : "192.168.252.121:27001" },
...          {_id : 1, host : "192.168.252.122:27001" },
...          {_id : 2, host : "192.168.252.123:27001" , arbiterOnly: true }
...      ]
...  }
{
	"_id" : "shard1",
	"members" : [
		{
			"_id" : 0,
			"host" : "192.168.252.121:27001"
		},
		{
			"_id" : 1,
			"host" : "192.168.252.122:27001"
		},
		{
			"_id" : 2,
			"host" : "192.168.252.123:27001",
			"arbiterOnly" : true
		}
	]
}
> rs.initiate(config)
{ "ok" : 1 }

此时会发现终端上的输出已经有了变化。

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//从单个一个
>
//变成了
shard1:SECONDARY>

查询状态

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shard1:SECONDARY> rs.status()