Mongo后台建唯一索引
db.orders.ensureIndex({userid:1,reqid:1},{unique:true,background:true})
备分数据库
mongodump -h 10.0.1.106 –port 27017 -u root -p xxxxxxx -d abc_gold -o /data/backup/abc_gold –authenticationDatabase admin
数据恢复
mongorestore -h 10.0.1.107 –port 27017 -u root -p yyyyyyyyy -d abc_gold /data/backup/abc_gold –drop –authenticationDatabase admin