https://www.mongodb.com/docs/v3.4/tutorial/deploy-sharded-cluster-ranged-sharding/

组件

mongos  负责router
config 负责配置（必须副本集）
mongod 负责存储（必须副本集）

Config 配置

processManagement:
   fork: true
net:
   bindIp: localhost
   port: [**自定义端口**]
storage:
   dbPath: /Volumes/SAO/data/mongo-sharding/db/c
systemLog:
   destination: file
   path: "/Volumes/SAO/data/mongo-sharding/logs/mongoc.log"
   logAppend: true
storage:
   journal:
      enabled: true
replication:
   oplogSizeMB: 1024
   replSetName: rs2
sharding:
  clusterRole: configsvr

mongod 配置

processManagement:
   fork: true
net:
   bindIp: localhost
   port: [**自定义端口**]
storage:
   dbPath: /Volumes/SAO/data/mongo-sharding/db/s1
systemLog:
   destination: file
   path: "/Volumes/SAO/data/mongo-sharding/logs/mongod1.log"
   logAppend: true
storage:
   journal:
      enabled: true
sharding:
  clusterRole: shardsvr
replication:
  replSetName: sh1
operationProfiling:
   mode: slowOp
   slowOpThresholdMs: 500

mongos 配置

processManagement:
   fork: true
net:
   bindIp: localhost
   port: 27018
systemLog:
   destination: file
   path: "/Volumes/SAO/data/mongo-sharding/logs/mongos.log"
   logAppend: true
sharding:
   configDB: rs2/127.0.0.1:27021,127.0.0.1:27022,127.0.0.1:27023

#步骤

初始化mongod副本集

添加sharding