How to import, export, backup and restore mongodb

1. Back up Mongodb

mongodump -h RuiyIp -d dataname -o /home/aa/dev/mongodb/data

mongodump mongo Export database command mongodump --help You can view all the help under this command

-h export source
-d Database name to be exported
-o The location where the database is to be exported

After the terminal scrolls through N lines, the database export is completed. You can go to the /home/aa/dev/mongodb/data directory to view the exported file, which is in bson format (I did not export it immediately after exporting. I saw the file, but it took a while for it to appear, for unknown reasons).

2. Restore using: mongorestore command

mongorestore -d cmsdev  /home/xx/dev/mongodb/data/cmsdev

-d Database name used

Add the directory you just exported directly after it, so that all tables can be restored directly. If -c is to restore one table

3. Import

mongoimport -d my_mongodb -c user user.dat

Parameter Description:

-d specifies the library to use, in this case "my_mongodb"
-c specifies the table to be exported, in this case "user"

You can see that the table structure will be created implicitly when importing data

4. Export

mongoexport -d my_mongodb -c user -o user.dat

Parameter Description:

-d specifies the library to use, in this case "my_mongodb"
-c specifies the table to be exported, in this case "user"
-o specifies the file name to be exported, in this case "user.dat"
As you can see from the above, the export method uses the JSON style

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