How can I transfer a mongodb database to another machine that cannot see the first one

If you're using Ubuntu/Linux, run the following commands. First, mongodump on the origin server:

mongodump --db DataBaseName

Copy the generated dump/DataBaseName folder to the new machine. Then, import using mongorestore:

mongorestore --db DataBaseName /path/to/DataBaseName 

Note that /path/to/DataBaseName should be a directory filled with .json and .bson representations of your data.

Use the mongodump and mongorestore commands.

mongodump --db test --collection collection
mongorestore --collection collection --db test dump/

You can also gzip. The documentation has more examples.

If you want to transfer database to another system, then you must use the following commands.

First dump the database to the output directory:

mongodump --db DatabaseName -o ./DirectoryName

then copy that directory and put it into your machine and issue this command:

mongorestore --db DBName ./DirectoryName