复制/克隆 mongodb 数据库及其数据
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Copy/Clone mongodb database along with its data
提问by user1795109
I need to copy my Mongo database along with its data. I have tried
我需要复制我的 Mongo 数据库及其数据。我试过了
db.copyDatabase( "Old_db", "new_db", "localhost" )
But the problem is it only copies a blank db, not with the previous data.
但问题是它只复制一个空白的数据库，而不是以前的数据。
回答by Moacy Barros
You can use copydb or clone, or their helpers copyDatabase()or cloneDatabase(), but there are some considerations:
您可以使用 copydb 或 clone，或者它们的助手copyDatabase()或cloneDatabase()，但有一些注意事项：
http://docs.mongodb.org/v2.2/tutorial/copy-databases-between-instances/#considerations
http://docs.mongodb.org/v2.2/tutorial/copy-databases-between-instances/#thinkations
Maybe you are triggering some of them.
也许你正在触发其中的一些。
I just tested
我刚测试
db.copyDatabase("test","testCopy","127.0.0.1")
and it worked perfectly.
它工作得很好。
Let us know if you got success.
如果您成功了，请告诉我们。
回答by backslash112
Feb 2019
2019 年 2 月
since db.copyDatabase()was deprecated in v4.0, you should use mongodumpand mongorestoreinstead:
由于db.copyDatabase()在 v4.0 中已弃用，您应该使用mongodumpandmongorestore代替：
mongodump
--host <source host:port>
--ssl
--username <username>
--password <password>
--authenticationDatabase admin
--db <sourceDbName>
--collection <collection-name>
mongodumpcommand will export the whole database into a local folder named dump/<sourceDbName>by default, then use mongorestorecommand to import to your target database:
mongodump命令会将整个数据库导出到dump/<sourceDbName>默认命名的本地文件夹中，然后使用mongorestore命令导入到目标数据库：
mongorestore
--host <target host:port>
--ssl
--username <username>
--password <password>
--authenticationDatabase admin
--db <targetDbName>
--collection <collection-name>
<dump folder/file>
Examples:
例子：
# backup the whole db (mydb-old):
mongodump -h Cluster0-shard-0/sample-shard-00-00-xyz.mongodb.net:27017 \
--ssl -u user1 -p 123123 --authenticationDatabase admin \
-d mydb-old
# backup only one collection (mydb-old.users):
mongodump -h Cluster0-shard-0/sample-shard-00-00-xyz.mongodb.net:27017 \
--ssl -u user1 -p 123123 --authenticationDatabase admin \
-d mydb-old -c users
# restore the whole db (mydb-old) to mydb-new:
mongorestore -h Cluster0-shard-0/sample-shard-00-00-xyz.mongodb.net:27017 \
--ssl -u user1 -p 123123 --authenticationDatabase admin \
-d mydb-new dump/mydb-old
# restore only one collection (mydb-old.users) to mydb-new.users:
mongorestore -h Cluster0-shard-0/sample-shard-00-00-xyz.mongodb.net:27017 \
--ssl -u user1 -p 123123 --authenticationDatabase admin \
-d mydb-new -c users dump/mydb-old/users.bson
Find out more:
了解更多：
回答by huynhminhtuan
If you need to authenticate:
如果您需要进行身份验证：
db.copyDatabase('crm', 'crm_copy', 'localhost', 'admin', '123456')
回答by VSO
I just copied the data/db file from a co-worker and it worked perfectly. I imagine it's a good idea to shut down any connections/mongod before doing so.
我刚刚从同事那里复制了 data/db 文件，它运行良好。我想在这样做之前关闭任何连接/mongod 是个好主意。
回答by elachell
I would recommend to have a look at the daemon(s). It happened to me that I had to reinitialize it/them (in my case I had a replica set)
我建议看看守护进程。我碰巧不得不重新初始化它/它们（在我的情况下，我有一个副本集）
回答by gregOh
use MongoChef is very easy to do, create the same database locally, then copy collection of the source, then past to local newly created db.
使用 MongoChef 很容易做到，在本地创建相同的数据库，然后复制源的集合，然后传递到本地新创建的数据库。
