Question

I seem to be having a problem. I have a view where I can allow staff users to download the MySQL database for that program, however it is not working at all. I get an error which says Errno 2] No such file or directory: '/usr/local/src/djcode/c2duo_mms/backup.gz'.

I don’t know why I get the error, but it the likely answer is because the I can’t dump the database properly. It can’t find backup.gz, because it cannot find the file beacause the step where it supposed to dump the file does not work.

views.py

@login_required
def dbbackup(request):
    if not (request.user.is_authenticated() and request.user.is_staff):
        raise http.Http404
    os.popen3("mysqldump -u *username* -p*password* *database* > /usr/local/src/djcode/c2duo_mms/backup.sql")
    os.popen3("gzip -c /usr/local/src/djcode/c2duo_mms/backup.sql > /usr/local/src/djcode/c2duo_mms/backup.gz"
    dataf = open('/usr/local/src/djcode/c2duo_mms/backup.gz', 'r')
    return HttpResponse(dataf.read(), mimetype='application/x-gzip')

EDIT: I have tried running a small python script. Now the following python file below works (saves a file named backup.gz in the c2duo_mms directory). So why can I not do the same thing from my views.py file!?

#!/usr/bin/env python
import os

    os.popen3("mysqldump -u *username* -p*password* *database* > /usr/local/src/djcode/c2duo_mms/backup.sql")
    os.popen3("gzip -c /usr/local/src/djcode/c2duo_mms/backup.sql > /usr/local/src/djcode/c2duo_mms/backup.gz")

Answer 1

The webserver was running as a different user than root (it needs to be the same), so I did not have permissions to save in that folder. I changed the ownership of the folder I wanted to save to which has worked now.

chown -R "apache" c2duo_mms