I uploaded a Django app to Heroku and than provision the cleardb add-on using these 3 commands from Heroku documentation:
heroku addons:create cleardb:ignite
heroku config | grep CLEARDB_DATABASE_URL
heroku config:set DATABASE_URL='mysql://adffdadf2341:adf4234@us-cdbr-east.cleardb.com/heroku_db?reconnect=true'
it seems to be O.K and the app is running (but without database). now I try to run:
$ heroku run python manage.py migrate
and this is the error I get:
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 355, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 327, in execute
self.check()
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 359, in check
include_deployment_checks=include_deployment_checks,
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/commands/migrate.py", line 61, in _run_checks
issues = run_checks(tags=[Tags.database])
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/checks/registry.py", line 81, in run_checks
new_errors = check(app_configs=app_configs)
File "/app/.heroku/python/lib/python3.5/site-packages/django/core/checks/database.py", line 10, in check_database_backends
issues.extend(conn.validation.check(**kwargs))
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/backends/mysql/validation.py", line 9, in check
issues.extend(self._check_sql_mode(**kwargs))
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/backends/mysql/validation.py", line 13, in _check_sql_mode
with self.connection.cursor() as cursor:
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/backends/base/base.py", line 254, in cursor
return self._cursor()
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/backends/base/base.py", line 229, in _cursor
self.ensure_connection()
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
self.connect()
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/backends/base/base.py", line 189, in connect
self.connection = self.get_new_connection(conn_params)
File "/app/.heroku/python/lib/python3.5/site-packages/django/db/backends/mysql/base.py", line 274, in get_new_connection
conn = Database.connect(**conn_params)
File "/app/.heroku/python/lib/python3.5/site-packages/MySQLdb/__init__.py", line 86, in Connect
return Connection(*args, **kwargs)
File "/app/.heroku/python/lib/python3.5/site-packages/MySQLdb/connections.py", line 204, in __init__
super(Connection, self).__init__(*args, **kwargs2)
TypeError: 'reconnect' is an invalid keyword argument for this function
Where does the problem comes from and how can I fix it?
Remove ?reconnect=true from the end of DATABASE_URL
The parameters after the database are arguments to the MySQL server. In this case, it asks to reconnect if the connection is dropped. It looks like the MySQLdb package doesn't support that argument.