* テスト環境にバックアップ元、バックアップ先の二つのサービスを起動する
# /usr/bin/mongod --journal --port 27017 --logappend --logpath /data/mongo1/logs/mongod.log --pidfilepath /data/mongo1/logs/mongod.pid --dbpath /data/mongo1/db --fork
# /usr/bin/mongod --journal --port 27018 --logappend --logpath /data/mongo2/logs/mongod.log --pidfilepath /data/mongo2/logs/mongod.pid --dbpath /data/mongo2/db --fork
* バックアップ元にログインする
# mongo --port 27017
MongoDB shell version: 2.2.2
connecting to: 127.0.0.1:27017/test
> show dbs
local (empty)
testdb (empty)
* テストデータを投入する
> use testdb
switched to db testdb
> for(var i=1;i<=150;i++) db.testdata.save({entryId:i, createdDatetime:new Date(), name:"test0"+i});
> db.testdata.findOne()
{
"_id" : ObjectId("5109be7579ee8df58e8feca6"),
"entryId" : 1,
"createdDatetime" : ISODate("2013-01-31T00:44:37.080Z"),
"name" : "test01"
}
> db.testdata.count()
150
> use test002
switched to db test002
> for(var i=1;i<=150;i++) db.t002data.save({entryId:i, createdDatetime:new Date(), name:"test0"+i});
> db.t002data.findOne()
{
"_id" : ObjectId("5109c85279ee8df58e8fed3c"),
"entryId" : 1,
"createdDatetime" : ISODate("2013-01-31T01:26:42.006Z"),
"name" : "test01"
}
> db.t002data.count()
150
* バックアップを実行する
# mongodump --help
Export MongoDB data to BSON 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 ( /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
--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 if dbpath specified, each db is in a separate
directory
--journal enable journaling
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
-o [ --out ] arg (=dump) output directory or "-" for stdout
-q [ --query ] arg json query
--oplog Use oplog for point-in-time snapshotting
--repair try to recover a crashed database
--forceTableScan force a table scan (do not use $snapshot)
* host:port のみの指定で、その環境のDB丸ごとバックアップする
実行時のカレントディレクトリに dumpディレクトリを作成し、その下にバックアップファイル作成
# cd /data/mongo1/
# mongodump -h localhost:27017
connected to: localhost:27017
all dbs
DATABASE: test002 to dump/test002
test002.t002data to dump/test002/t002data.bson
150 objects
Metadata for test002.t002data to dump/test002/t002data.metadata.json
DATABASE: testdb to dump/testdb
testdb.testcol to dump/testdb/testcol.bson
2 objects
Metadata for testdb.testcol to dump/testdb/testcol.metadata.json
testdb.testdata to dump/testdb/testdata.bson
150 objects
Metadata for testdb.testdata to dump/testdb/testdata.metadata.json
You have new mail in /var/spool/mail/root
* リストアを実行する
# mongorestore --help
Import BSON files into MongoDB.
usage: mongorestore [options] [directory or filename to restore 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 ( /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
--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 if dbpath specified, each db is in a separate
directory
--journal enable journaling
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
--objcheck 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 exclude oplog entries newer than provided timestamp
(epoch[:ordinal])
--keepIndexVersion don't upgrade indexes to newest version
--noOptionsRestore don't restore collection options
--noIndexRestore don't restore indexes
--w arg (=1) minimum number of replicas per write
* 環境によってはバックアップデータの指定に「dbpath」オプションを指定するとエラーになる
# mongorestore -h localhost:27018 --drop --dbpath /data/mongo1/dump
[tools] Unable to check for journal files due to: boost::filesystem::basic_directory_iterator constructor: No such file or directory: "/data/mongo1/dump/journal"
[tools] ERROR: don't know what to do with file [dump]
* その場合は、「dbpath」オプションを指定せずにバックアップデータを指定する
# mongorestore -h localhost:27018 --drop /data/mongo1/dump
connected to: localhost:27018
/data/mongo1/dump/testdb/testdata.bson
going into namespace [testdb.testdata]
dropping
150 objects found
Creating index: { key: { _id: 1 }, ns: "testdb.testdata", name: "_id_" }
/data/mongo1/dump/testdb/testcol.bson
going into namespace [testdb.testcol]
dropping
2 objects found
Creating index: { key: { _id: 1 }, ns: "testdb.testcol", name: "_id_" }
/data/mongo1/dump/test002/t002data.bson
going into namespace [test002.t002data]
dropping
150 objects found
Creating index: { key: { _id: 1 }, ns: "test002.t002data", name: "_id_" }
* リストアが正しく行われたことを確認
# mongo --port 27018
MongoDB shell version: 2.2.2
connecting to: 127.0.0.1:27018/test
> show dbs
local (empty)
test002 0.203125GB
testdb (empty)
> use testdb
switched to db testdb
> show collections
system.indexes
testcol
testdata
> db.testdata.count()
150
> db.testdata.findOne()
{
"_id" : ObjectId("5109be7579ee8df58e8feca6"),
"entryId" : 1,
"createdDatetime" : ISODate("2013-01-31T00:44:37.080Z"),
"name" : "test01"
}
* DBを指定してのバックアップ＆リストア
# mongodump -h localhost:27017 -d testdb -o /data/mongo1/dump2/
# mongorestore -h localhost:27018 -d testdb --drop /data/mongo1/dump2/testdb
* DB、コレクションを指定してのバックアップ＆リストア
# mongodump -h localhost:27017 -d test002 -c t002data -o /data/mongo1/dump3/
# mongorestore -h localhost:27018 -d test002 -c t002data --drop /data/mongo1/dump3/test002/t002data.bson