mongodb 数据恢复

使用mongorestore.exe工具是来恢复备份的数据。

它主要用来获取mongodump的输出结果，并将备份的数据插入到运行的Mongodb中。

mongorestore命令使用方法如下：

C:\Users\Administrator>D:\tool\mongo\bin\mongorestore.exe --help
Import BSON files into MongoDB.

usage: D:\tool\mongo\bin\mongorestore.exe [options] [directory or filename to re
store from]
options:
--help produce help message
-v [ --verbose ] be more verbose (include multiple times
for more verbosity e.g. -vvvvv)
--version print the program's version and exit
-h [ --host ] arg mongo host to connect to ( <set
name>/s1,s2 for sets)
--port arg server port. Can also use --host
hostname:port
--ipv6 enable IPv6 support (disabled by
default)
-u [ --username ] arg username
-p [ --password ] arg password
--authenticationDatabase arg user source (defaults to dbname)
--authenticationMechanism arg (=MONGODB-CR)
authentication mechanism
--dbpath arg directly access mongod database files
in the given path, instead of
connecting to a mongod server - needs
to lock the data directory, so cannot
be used if a mongod is currently
accessing the same path
--directoryperdb each db is in a separate directly
(relevant only if dbpath specified)
--journal enable journaling (relevant only if
dbpath specified)
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
--objcheck validate object before inserting
(default)
--noobjcheck don't validate object before inserting
--filter arg filter to apply before inserting
--drop drop each collection before import
--oplogReplay replay oplog for point-in-time restore
--oplogLimit arg include oplog entries before the
provided Timestamp (seconds[:ordinal])
during the oplog replay; the ordinal
value is optional
--keepIndexVersion don't upgrade indexes to newest version
--noOptionsRestore don't restore collection options
--noIndexRestore don't restore indexes
--w arg (=0) minimum number of replicas per write

数据恢复命令如下：

C:\Users\Administrator>D:\tool\mongo\bin\mongorestore.exe -d memo -directoryperd
b D:\tool\mongo\backup\memo -u root -p 123456 --drop

-d 要恢复的数据库
-directoryperd 备份的数据存放路径，需要指定到具体的数据库文件夹

-u 用户名,当然也要与-d的库对应

-p 密码

--drop 备份后删除当前数据库中的数据。如果不使用些命令，则恢复后是数据是混合在一起的。