MongoDB初始化

1,创建用户和实例
use test
db.createUser({user:'test',pwd:'xxx',roles:[{role:"dbOwner",db:"test"}],passwordDigestor:"server"})
db.grantRolesToUser("test",[{role:"dbOwner",db:"test"}])

2,创建集合
db.createCollection("test")

3,启用分片
use admin
db.runCommand({enableSharding:"test"})

4,对集合分片
sh.shardCollection("testdb.test",{"_id":1})

5,查看集合分片
db.getCollection("test").getShardDistribution();

6,查看索引
db.test.getIndexes()

7,创建索引
db.test.createIndex({"id":1,"name":1},{backgroud:1})