问题
How to use C# to backup and restore the Mongodb database? For now there is only an server to save the mongodb data, and I want to make an backup in case of the server is destroyed so that I can restore it.
Dose anybody know how to do that using C#?
回答1:
If you just want automated backups, there is an easier way than resorting to a full-fledged programming language:
http://docs.mongodb.org/manual/tutorial/backup-databases-with-filesystem-snapshots/
As shown in the link, the below command would suffice. You may put it in a statup-script/daemon to execute it at regular frequencies:
Backup:
lvcreate --size 100M --snapshot --name mdb-snap01 /dev/vg0/mongodb
Restore:
lvcreate --size 1G --name mdb-new vg0
gzip -d -c mdb-snap01.gz | dd of=/dev/vg0/mdb-new
mount /dev/vg0/mdb-new /srv/mongodb
回答2:
From the mongolab website (http://docs.mongolab.com/backups/) a useful/simple example:
To backup use mongodump:
% mongodump -h ds012345.mongolab.com:56789 -d dbname -u dbuser -p dbpassword -o dumpdir
To restore use mongorestore:
% mongorestore -h ds023456.mongolab.com:45678 -d dbname -u dbuser -p dbpassword dumpdir/*
回答3:
Take backup using mongodump use the following command
mongodump -d database_name -o directory_where_mongodb_exists
To restore use this command
mongorestore -d database_name mongodb_restore_directory
回答4:
In this answer, I will emphasize on delineating a few caveats that I experienced while doing this for the first time. Hope this proves useful to somebody in the same situation. Although, the example uses the command line, the utilities are available out-of-the-box with the Mongo installation and can very well be used with C#.
First of, ensure that your MongoDB installation directory is in the environment path and you are able to access the mongodump command. MongoDB is normally installed in ~\ProgramFiles\MongoDB\Server\<vr>\bin on Windows.
Once the utility is accessible from CMD, navigate to the directory where you'd like to save (or dump) the backup.
Check the mongodump --help for options.
I used a simple (full) backup and restore. So, use the command and specify the required options. Here is an example:
mongodump /host:ds062199.mlab.com /port:62199 /username:mydbuser /password:mypwd /db:mydbname
The moment you hit enter, the utility will create BSON and metadata JSON backup files in a dump/dbname subdirectory.
Now, to restore, do the following. Note, I backed up a Mongo instance running on Azure (Mongo Labs) and restored it on my local machine as follows. While in the same directory (on the cmd), execute the following:
mongorestore /host:localhost /port:27017
And it will create a new db, as the replica of the backup on the localhost mongodb instance.
Hope this helps!
来源：https://stackoverflow.com/questions/15755608/how-to-backup-and-restore-the-mongodb-database