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然后打下mongo:

E:\mongodb\bin>mongo   回車  （有時(shí)加端口會(huì)造成下面的addshard命令出問題）
      > use admin
          switched to db admin
      > db.runCommand( { addshard : "10.0.4.85:27020", allowLocal : 1, maxSize:2 , minKey:1, maxKey:10} )  
         --添加sharding,maxsize單位是M,此處設(shè)置比較小的數(shù)值只為演示sharding效果
         { "shardAdded" : "shard0000", "ok" : 1 }
      > db.runCommand( { addshard : "10.0.4.85:27021", allowLocal : 1, minKey:1000} )
         { "shardAdded" : "shard0001", "ok" : 1 }     
          注：如果要移除sharding，可用下面寫法
          db.runCommand( { removeshard : "localhost:10000" } );
      > db.runCommand({listshards:1});   查看shard節(jié)點(diǎn)列表    
      {
        "shards" : [
                {
                        "_id" : "shard0000",
                        "host" : "10.0.4.85:27020"
                },
                {
                        "_id" : "shard0001",
                        "host" : "10.0.4.85:27021"
                }
        ],
        "ok" : 1
      }

接下來創(chuàng)建相應(yīng)數(shù)據(jù)庫并設(shè)置其"可以sharding",新建自動(dòng)切片的庫user001：

> config = connect("10.0.4.85:27022")
> config = config.getSisterDB("config")
> dnt_mongodb=db.getSisterDB("dnt_mongodb");
dnt_mongodb
> db.runCommand({enablesharding:"dnt_mongodb"})
{ "ok" : 1 }

注：一旦enable了個(gè)數(shù)據(jù)庫，mongos將會(huì)把數(shù)據(jù)庫里的不同數(shù)據(jù)集放在不同的分片上。除非數(shù)據(jù)集被分片(下面會(huì)設(shè)置)，否則一個(gè)數(shù)據(jù)集的所有數(shù)據(jù)將放在一個(gè)分片上。

> db.printShardingStatus();
   --- Sharding Status ---
  sharding version: { "_id" : 1, "version" : 3 }
  shards:
      { "_id" : "shard0000", "host" : "10.0.4.85:27020" }
      { "_id" : "shard0001", "host" : "10.0.4.85:27021" }
  databases:
        { "_id" : "admin", "partitioned" : false, "primary" : "config" }
        { "_id" : "dnt_mongodb", "partitioned" : true, "primary" : "shard0000" }
       > db.runCommand( { shardcollection : "dnt_mongodb.posts1", key : {_id : 1}, unique: true } )  
          { "collectionsharded" : "dnt_mongodb.posts1", "ok" : 1 } 

--使用shardcollection 命令分隔數(shù)據(jù)集，key自動(dòng)生成。

出處：CSDN
責(zé)任編輯：bluehearts

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