创建恢复用户
db.createUser({user:"huifu",pwd:"123456",roles:[{role:"restore",db:"admin"}]})

创建备份用户
db.createUser({user:"beifen",pwd:"123456",roles:[{role:"backup",db:"admin"}]})

#备份
mongodump -h 192.168.233.133:27017 -u beifen -p 123456 -d test -o /tmp/backup/

#恢复
mongorestore --host=192.168.233.133 --port=27017 -u huifu -p 123456  -d test /tmp/backup/test

本文题目：mongodb库备份
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