configsvr> show dbs
configsvr> use config
configsvr> show collections
onfigsvr> db.mongos.find()
{ "_id" :"racdb:28885", "ping" :ISODate("2016-03-21T09:23:05.106Z"), "up" :NumberLong(1436), "waiting" : true, "mongoVersion" :"3.2.3" }
{ "_id" :"host8.localdomain:28885", "ping" :ISODate("2016-03-21T09:23:07.960Z"), "up" :NumberLong(1427), "waiting" : true, "mongoVersion" :"3.2.3" }
{ "_id" :"host9.localdomain:28885", "ping" :ISODate("2016-03-21T09:23:03.521Z"), "up" :NumberLong(1407), "waiting" : true, "mongoVersion" :"3.2.3" }
configsvr> db.shards.find()
{ "_id" : "shard1","host" : "shard1/host8:28017,racdb:28017" }
{ "_id" : "shard2","host" : "shard2/host8:28018,racdb:28018" }
configsvr> db.databases.find()
{ "_id" :"im_offline_msg", "primary" : "shard1","partitioned" : true }
{ "_id" : "testdb","primary" : "shard2", "partitioned" : true }
{ "_id" : "test","primary" : "shard1", "partitioned" : true }
{ "_id" : "blogdb","primary" : "shard2", "partitioned" : false }

mongos> db.stats()
mongos> db.tab.stats()

# mongo racdb:28885
mongos>sh.enableSharding("test")
#或者
# mongo racdb:28885
mongos> use admin
mongos> db.runCommand( { enableSharding:"blogdb"} )

configsvr> use config
switched to db config
configsvr> db.databases.find()
{ "_id" :"im_offline_msg", "primary" : "shard1","partitioned" : true }
{ "_id" : "testdb","primary" : "shard2", "partitioned" : true }
{ "_id" : "test","primary" : "shard1", "partitioned" : true }
{ "_id" : "blogdb","primary" : "shard2", "partitioned" : true }

--使用python命令
#创建python文件
$ vi batch_insert.py
#-*- coding: UTF-8 -*-
import pymongo
client = pymongo.MongoClient("racdb", 28885)
db = client.testdb
#查看testdb数据库中集合信息
print (db.collection_names())
#连接到my_collection集合
print (db.my_collection)
#清空my_collection集合文档信息
db.my_collection.remove()
#显示my_collection集合中文档数目
print (db.my_collection.find().count())
#插入10000条文档信息
for i in range(10000):
db.my_collection.insert({"id":i,"name":"Licz"})
#显示my_collection集合中文档数目
print ('插入完毕，当前文档数目：')
print (db.my_collection.find().count())
#执行插入
[mongod@racdb ~]$ python2.7.3batch_insert.py
[u'system.indexes', u'table1',u'my_collection']
Collection(Database(MongoClient(host=['racdb:28885'],document_class=dict, tz_aware=False, connect=True), u'testdb'), u'my_collection')
0

10000
#或是用mongo shell插入测试数据
for (var i=1; i<=100000; i++) {
db.cc.insert({"id": i,"myName" : "cc"+i, "myDate" : new Date()});
}

mongos> show collections
mongos> db.cc.find()
mongos> db.cc.createIndex({"id": "hashed" })
mongos> db.cc.getIndexes()
mongos>sh.shardCollection("testdb.cc", { "id": "hashed"})
mongos> db.stats()
mongos> db.cc.stats()
--查看sharding 状态
mongos> db.printShardingStatus();