分片: 分片集群基础配置

环境介绍

系统版本	服务器ip地址	分片集群角色	端口号
CentOS Linux release 7.6.1810 (Core)	192.168.0.92	Master	30000
CentOS Linux release 7.6.1810 (Core)	192.168.0.92	config	20000
CentOS Linux release 7.6.1810 (Core)	192.168.0.92	shard1	27017
CentOS Linux release 7.6.1810 (Core)	192.168.0.92	shard2	27018
CentOS Linux release 7.6.1810 (Core)	192.168.0.92	shard3	27019
CentOS Linux release 7.6.1810 (Core)	192.168.0.93	config	20000
CentOS Linux release 7.6.1810 (Core)	192.168.0.93	shard1	27017
CentOS Linux release 7.6.1810 (Core)	192.168.0.93	shard2	27018
CentOS Linux release 7.6.1810 (Core)	192.168.0.93	shard3	27019
CentOS Linux release 7.6.1810 (Core)	192.168.0.94	config	20000
CentOS Linux release 7.6.1810 (Core)	192.168.0.94	shard1	27017
CentOS Linux release 7.6.1810 (Core)	192.168.0.94	shard2	27018
CentOS Linux release 7.6.1810 (Core)	192.168.0.94	shard3	27019

首先根据 副本: 副本集集群基础配置 创建出三个副本集集群,副本集名称分别为shard1、shard2、shard3。

正式开始

1、配置 mongos 分片集路由节点

[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# cat config/mongos.conf 
systemLog:
   destination: file
   path: "/usr/local/mongodb-linux-x86_64-rhel70-3.2.22/logs/mongos.log"
   logAppend: true
processManagement:
   fork: true
net:
   bindIp: 192.168.0.92
   port: 30000
sharding:
  configDB: 192.168.0.92:20000,192.168.0.93:20000,192.168.0.94:20000
  chunkSize: 64

2、配置 configsvr 分片集配置节点

注意：从3.4开始，mongod 不再支持将已弃用的镜像实例用作配置服务器（SCCC）。在将分片群集升级到3.4之前，必须将配置服务器从SCCC转换为CSRS。可以将配置集节点作为副本集群实现数据的一致性。

[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# cat config/config.conf 
systemLog:
   destination: file
   path: "/usr/local/mongodb-linux-x86_64-rhel70-3.2.22/logs/config.log"
   logAppend: true
storage:
   dbPath: "/usr/local/mongodb-linux-x86_64-rhel70-3.2.22/data"
   directoryPerDB: true
   journal:
      enabled: true
processManagement:
   fork: true
net:
   bindIp: 192.168.0.92
   port: 20000
sharding:
   clusterRole: configsvr

3、在各个副本集节点添加分片集群角色

以 node92 副本集 shard1 为例，其他副本集节点依次添加。

[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# cat config/shard1.conf 
...
sharding:
  clusterRole: shardsvr
...

4、重启各副本集节点 启动mognos和configsvr

#举例启动 依次启动各 Mongo Cluster Node。
[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# bin/mongos -f config/mongos.conf
[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# bin/mongod -f config/config.conf

5、在 mongos 节点添加副本集节点为分片节点

[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# bin/mongo 192.168.0.92:30000
MongoDB shell version: 3.2.22
connecting to: 192.168.0.92:30000/test
mongos> sh.addShard("shard1/192.168.0.92:27017")
mongos> sh.addShard("shard2/192.168.0.92:27018")
mongos> sh.addShard("shard3/192.168.0.92:27019")

6、搭建完成测试即可