MongoDB基本操作、备份还原及用户管理

hc6538

#备份本地school数据库　　> [root@localhost ~]# mkdir /backup
　　[root@localhost ~]# mongodump -d school -o /backup/
　　2018-07-14T03:36:44.427-0400    writing school.info to
　　2018-07-14T03:36:44.429-0400    done dumping school.info (99 documents)
　　#恢复本地school数据库至数据库abc中
　　> [root@localhost ~]# mongorestore -d abc --dir=/backup/school
　　2018-07-14T03:37:40.174-0400    the --db and --collection args should only be used when restoring from a BSON file. Other uses are deprecated and will not exist in the future; use --nsInclude instead
　　2018-07-14T03:37:40.174-0400    building a list of collections to restore from /backup/school dir
　　2018-07-14T03:37:40.175-0400    reading metadata for abc.info from /backup/school/info.metadata.json
　　2018-07-14T03:37:40.187-0400    restoring abc.info from /backup/school/info.bson
　　2018-07-14T03:37:40.208-0400    no indexes to restore
　　2018-07-14T03:37:40.208-0400    finished restoring abc.info (99 documents)
　　2018-07-14T03:37:40.209-0400    done
　　#导出本机school数据库info集合
　　> [root@localhost ~]# mongoexport -d school -c info -o /backup/info.json
　　2018-07-14T03:44:41.610-0400    connected to: localhost
　　2018-07-14T03:44:41.613-0400    exported 99 records
　　#导入备份数据至本机school数据库user集合
　　> [root@localhost ~]# mongoimport -d school -c user --file /backup/info.json
　　2018-07-14T03:45:09.300-0400    connected to: localhost
　　2018-07-14T03:45:09.330-0400    imported 99 documents
　　#导出本机school数据库user1集合id=10的数据
　　> [root@localhost ~]# mongoexport -d school -c user -q '{"id":{"$lt":10}}' -o /backup/top10.json
　　2018-07-14T03:51:23.968-0400    connected to: localhost
　　2018-07-14T03:51:23.969-0400    exported 9 records