用户操作需要进入admin数据库
use admin;
增加或修改一个用
db.addUser("market","market");(可写)
db.addUser("market","market",true);(只读)
查看所有用户
show users;
删除一个用户
db.removeUser("market");
一、数据库备份
F:\>mongodump -h 192.168.1.72:27017 -d market -o f:\mongodb\market
n1.从192.168.1.72:27017上备份market数据库到目录f:\mongodb\market
n2.目录中的内容会被重建,默认会覆盖原数据文件
二、数据库还原
F:\>mongorestore -h 192.168.1.72:27017 -d market --directoryperdb f:\mongodb\market\market\
n1.把f:\mongodb\market\market\下的文件导入到192.168.1.72:27017的market数据库中
n2.market数据库会重建
三、数据库导出
F:\>mongoexport -h 192.168.1.72:27017 -d market -c app_search_key_2012-02-18 -o f:\mongodb\app_search_key_2012-02-18.json
n1.从192.168.1.72:27017上market数据库中导出表app_search_key_2012-02-18,数据放在文件f:\mongodb\app_search_key_2012-02-18.json中
n2.文件会重建
n3.导出json格式的内容,如果需要向mysql中转移数据库,需要导出csv格式的数据，如：
F:\>mongoexport -h 192.168.1.72:27017 -d market -c app_search_key_2012-02-18 -o f:\mongodb\app_search_key_2012-02-18.csv --csv -f key,date
四、数据库导入
F:\>mongoimport -h192.168.1.72:27017 -d market -c app_search_key_2012-02-18 --file f:\mongodb\app_search_key_2012-02-18.json
n1.导入文件f:\mongodb\app_search_key_2012-02-18.json到192.168.1.72:27017上的app_search_key_2012-02-18表
n2.导入csv格式的数据
F:\>mongoimport -h192.168.1.72:27017 -d market -c app_search_key_2012-02-18 --file f:\mongodb\app_search_key_2012-02-18.csv --type csv --headerline
n3.数据会追加
mongoexport -h 127.0.0.1 -d tmp -c cccc -q '{nsg:"de5"}' -o /tmp/dddd.csv -f a,v,f,mid,splus,message --csv
root@tts-0001:/home/ttpod/cttpod# mongoexport --help
Export MongoDB data to CSV, TSV or JSON files.
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)
-f [ --fields ] arg comma separated list of field names
e.g. -f name,age
--fieldFile arg file with fields names - 1 per line
-q [ --query ] arg query filter, as a JSON string
--csv export to csv instead of json
-o [ --out ] arg output file; if not specified, stdout
is used
--jsonArray output to a json array rather than one
object per line
-k [ --slaveOk ] arg (=1) use secondaries for export if
available, default true
--forceTableScan force a table scan (do not use
$snapshot)