如何备份，还原和迁移MongoDB数据库

$ vi /backup/mongo-backup.sh

#!/bin/sh

TODAY=`date +%d%b%Y`

BACKUP_DIR=/backup/db

mkdir -p ${BACKUP_DIR}/${TODAY}

mongodump -h <DATABASE_HOST> -d <DATABASE_NAME> -u <USERNAME> -p <PASSWRD> --out ${BACKUP_DIR}/${TODAY}/

0 2 * * * /backup/mongo-backup.sh