We Keep Coding

Django: unknown database name

I am trying to change the database in django from sqlite3 to mysql
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'django',
'USER':'myusername',
'PASSWORD':'mypassword',
'HOST':'127.0.0.1',
'PORT':'3306',
}
}
and after trying to run my server i get this error
System check identified no issues (0 silenced).
Exception in thread django-main-thread:
Traceback (most recent call last):
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\backends\base\base.py", line 244, in ensure_connection
self.connect()
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\backends\base\base.py", line 225, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\backends\mysql\base.py", line 244, in get_new_connection
connection = Database.connect(**conn_params)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\MySQLdb\__init__.py", line 123, in Connect
return Connection(*args, **kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\MySQLdb\connections.py", line 185, in __init__
super().__init__(*args, **kwargs2)
MySQLdb.OperationalError: (1049, "Unknown database 'django'")
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\threading.py", line 973, in _bootstrap_inner
self.run()
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\threading.py", line 910, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\management\commands\runserver.py", line 137, in inner_run
self.check_migrations()
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\management\base.py", line 576, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\migrations\executor.py", line 18, in __init__
self.loader = MigrationLoader(self.connection)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\migrations\loader.py", line 58, in __init__
self.build_graph()
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\migrations\loader.py", line 235, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\migrations\recorder.py", line 81, in applied_migrations
if self.has_table():
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\migrations\recorder.py", line 57, in has_table
with self.connection.cursor() as cursor:
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\backends\base\base.py", line 284, in cursor
return self._cursor()
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\backends\base\base.py", line 260, in _cursor
self.ensure_connection()
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\backends\base\base.py", line 244, in ensure_connection
self.connect()
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\utils.py", line 91, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\backends\base\base.py", line 244, in ensure_connection
self.connect()
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\backends\base\base.py", line 225, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\django\db\backends\mysql\base.py", line 244, in get_new_connection
connection = Database.connect(**conn_params)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\MySQLdb\__init__.py", line 123, in Connect
return Connection(*args, **kwargs)
File "C:\Users\ыв\AppData\Local\Programs\Python\Python39\lib\site-packages\MySQLdb\connections.py", line 185, in __init__
super().__init__(*args, **kwargs2)
django.db.utils.OperationalError: (1049, "Unknown database 'django'")
i dont know why django can't see my db, maybe you guys have some ideas.
Mysql didn't get me any problems before this case,
i haven't found a way to fix an error, so I counting on your help.
thanks in advance

The shortest answer to that is that django database ist't crated in MySQL. Django will not create the database for you like it do on sqlite3, you have to had this database created before.
You can ensure that you created the database by running a command like that:
$ mysql -h 127.0.0.1 -pmypassword -u myusername # to connect on your mysql
mysql> show databases; # list all databases on your MySQL server
To create a new database my recomendation is the following:
mysql> create database django charset utf8mb4; -- charset is optional
mysql> use django;

Pycharm / Django defer Oracle Database connection

I have a Django project that connects to an Oracle database - implemented in PyCharm. I would like the app to monitor the connection and display a status as to whether the database is up or down. I stopped the listener to simulate an error. However, when I start the PyCharm server to test the functionality, the app immediately attempts a database connection and fails. Is it possible to defer the database connection until I can command one within the app?
Here is the error traceback on server startup:
C:\Users\steve\PycharmProjects\Tools\venv\Scripts\python.exe C:/Users/steve/PycharmProjects/Tools/Tools/manage.py runserver
Watching for file changes with StatReloader
Performing system checks...
System check identified no issues (0 silenced).
Exception in thread django-main-thread:
Traceback (most recent call last):
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\backends\base\base.py", line 219, in ensure_connection
self.connect()
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\backends\base\base.py", line 200, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\backends\oracle\base.py", line 229, in get_new_connection
return Database.connect(
cx_Oracle.DatabaseError: ORA-12541: TNS:no listener
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\steve\AppData\Local\Programs\Python\Python39\lib\threading.py", line 954, in _bootstrap_inner
self.run()
File "C:\Users\steve\AppData\Local\Programs\Python\Python39\lib\threading.py", line 892, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\core\management\commands\runserver.py", line 121, in inner_run
self.check_migrations()
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\core\management\base.py", line 486, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\migrations\executor.py", line 18, in init
self.loader = MigrationLoader(self.connection)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\migrations\loader.py", line 53, in init
self.build_graph()
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\migrations\loader.py", line 220, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\migrations\recorder.py", line 77, in applied_migrations
if self.has_table():
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\migrations\recorder.py", line 55, in has_table
with self.connection.cursor() as cursor:
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\backends\base\base.py", line 259, in cursor
return self._cursor()
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\backends\base\base.py", line 235, in _cursor
self.ensure_connection()
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\backends\base\base.py", line 219, in ensure_connection
self.connect()
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\utils.py", line 90, in exit
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\backends\base\base.py", line 219, in ensure_connection
self.connect()
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\backends\base\base.py", line 200, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\steve\PycharmProjects\Tools\venv\lib\site-packages\django\db\backends\oracle\base.py", line 229, in get_new_connection
return Database.connect(
django.db.utils.DatabaseError: ORA-12541: TNS:no listener

PostgreSQL error "unable to connect to server

I start learning Django, and I had a problem using the Postegres database,
The server worked fine with sqlite3, but as soon as I declared Postgres in the project, the server stopped working
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql', # on utilise l'adaptateur postgresql
'NAME': 'sarah disquaires', # le nom de notre base de donnees creee precedemment
'USER': 'sarra', # attention : remplacez par votre nom d'utilisateur
'PASSWORD': '',
'HOST': '',
'PORT': '5432',
}
}
I get this error:
python manage.py runserver
Watching for file changes with StatReloader
Performing system checks...
System check identified no issues (0 silenced).
Exception in thread django-main-thread:
Traceback (most recent call last):
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\backends\base\base.py", line 219, in ensure_connection
self.connect()
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\backends\base\base.py", line 200, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\backends\postgresql\base.py", line 187, in get_new_connection
connection = Database.connect(**conn_params)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\psycopg2\__init__.py", line 122, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: fe_sendauth: no password supplied
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\threading.py", line 932, in _bootstrap_inner
self.run()
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\management\commands\runserver.py", line 121, in inner_run
self.check_migrations()
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\core\management\base.py", line 486, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\migrations\executor.py", line 18, in __init__
self.loader = MigrationLoader(self.connection)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\migrations\loader.py", line 53, in __init__
self.build_graph()
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\migrations\loader.py", line 220, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\migrations\recorder.py", line 77, in applied_migrations
if self.has_table():
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\migrations\recorder.py", line 55, in has_table
with self.connection.cursor() as cursor:
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\backends\base\base.py", line 259, in cursor
return self._cursor()
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\backends\base\base.py", line 235, in _cursor
self.ensure_connection()
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\backends\base\base.py", line 219, in ensure_connection
self.connect()
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\backends\base\base.py", line 219, in ensure_connection
self.connect()
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\backends\base\base.py", line 200, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\utils\asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\django\db\backends\postgresql\base.py", line 187, in get_new_connection
connection = Database.connect(**conn_params)
File "C:\Users\sarra\AppData\Local\Programs\Python\Python38-32\lib\site-packages\psycopg2\__init__.py", line 122, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: fe_sendauth: no password supplied
I tried to migrate the base with python manage.py makemigrations and python manage.py migrate but didn't work,
I tested several solutions proposed on several sites, but did not work for me.
please help me solve this problem

As the error message says:
no password supplied
So add the database password to the configurarion dictionary and re-run the migration

makemigrations isn't working- how to fix it?

I have a dockerized django project. I'm trying to make migrations, but I keep getting this error. What does this mean, and how can I fix it? I am really new to this, so please be as detailed as possible! Thank you
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
utility.execute()
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/core/management/base.py", line 328, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/core/management/base.py", line 369, in execute
output = self.handle(*args, **options)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/core/management/base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/core/management/commands/makemigrations.py", line 101, in handle
loader.check_consistent_history(connection)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/migrations/loader.py", line 283, in check_consistent_history
applied = recorder.applied_migrations()
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/migrations/recorder.py", line 76, in applied_migrations
if self.has_table():
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/migrations/recorder.py", line 56, in has_table
return self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor())
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/backends/base/base.py", line 260, in cursor
return self._cursor()
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/backends/base/base.py", line 236, in _cursor
self.ensure_connection()
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/backends/base/base.py", line 220, in ensure_connection
self.connect()
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/backends/base/base.py", line 220, in ensure_connection
self.connect()
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/backends/base/base.py", line 197, in connect
self.connection = self.get_new_connection(conn_params)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/django/db/backends/postgresql/base.py", line 185, in get_new_connection
connection = Database.connect(**conn_params)
File "/Users/jasminedogu/opt/anaconda3/lib/python3.7/site-packages/psycopg2/__init__.py", line 127, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

Your Django application is not connecting to the database.
Couple of things to check.
What port is your database running on and what is the hostname? If you're using docker-compose, the host will be the same as the database service name.
Next, check your settings.py insuring that your database is using the correct host and port. By default, on Postgres, Django will use port 5432. If this is not the case, update it.
Similarly, if you have not explicitly set a host, Django will use localhost. You will need to change this value to whatever your database service name is.

Docker Instalation Kiwi Tcms with Postgresql

I started Kiwi TCMS in Docker (k8s) with Postgresql. It started ok, but when I wanted to run migrations it crashed. I used this docker-compose for inspiration.
Log shows problem with connection with MySQL. But I changed configuration for engine. See:
bash-4.2$ KIWI_DB_ENGINE=django.db.backends.postgresql_psycopg2 /Kiwi/manage.py migrate
django.db.backends.postgresql_psycopg2
Traceback (most recent call last):
File "/venv/lib/python3.6/site-packages/django/db/backends/base/base.py", line 216, in ensure_connection
self.connect()
File "/venv/lib/python3.6/site-packages/django/db/backends/base/base.py", line 194, in connect
self.connection = self.get_new_connection(conn_params)
File "/venv/lib/python3.6/site-packages/django/db/backends/mysql/base.py", line 227, in get_new_connection
return Database.connect(**conn_params)
File "/venv/lib/python3.6/site-packages/MySQLdb/__init__.py", line 85, in Connect
return Connection(*args, **kwargs)
File "/venv/lib/python3.6/site-packages/MySQLdb/connections.py", line 204, in __init__
super(Connection, self).__init__(*args, **kwargs2)
_mysql_exceptions.OperationalError: (2013, "Lost connection to MySQL server at 'reading initial communication packet', system error: 0")
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/Kiwi/manage.py", line 13, in <module>
execute_from_command_line(sys.argv)
File "/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/venv/lib/python3.6/site-packages/django/core/management/base.py", line 316, in run_from_argv
self.execute(*args, **cmd_options)
File "/venv/lib/python3.6/site-packages/django/core/management/base.py", line 350, in execute
self.check()
File "/venv/lib/python3.6/site-packages/django/core/management/base.py", line 379, in check
include_deployment_checks=include_deployment_checks,
File "/venv/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 59, in _run_checks
issues = run_checks(tags=[Tags.database])
File "/venv/lib/python3.6/site-packages/django/core/checks/registry.py", line 71, in run_checks
new_errors = check(app_configs=app_configs)
File "/venv/lib/python3.6/site-packages/django/core/checks/database.py", line 10, in check_database_backends
issues.extend(conn.validation.check(**kwargs))
File "/venv/lib/python3.6/site-packages/django/db/backends/mysql/validation.py", line 9, in check
issues.extend(self._check_sql_mode(**kwargs))
File "/venv/lib/python3.6/site-packages/django/db/backends/mysql/validation.py", line 13, in _check_sql_mode
with self.connection.cursor() as cursor:
File "/venv/lib/python3.6/site-packages/django/db/backends/base/base.py", line 255, in cursor
return self._cursor()
File "/venv/lib/python3.6/site-packages/django/db/backends/base/base.py", line 232, in _cursor
self.ensure_connection()
File "/venv/lib/python3.6/site-packages/django/db/backends/base/base.py", line 216, in ensure_connection
self.connect()
File "/venv/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/venv/lib/python3.6/site-packages/django/db/backends/base/base.py", line 216, in ensure_connection
self.connect()
File "/venv/lib/python3.6/site-packages/django/db/backends/base/base.py", line 194, in connect
self.connection = self.get_new_connection(conn_params)
File "/venv/lib/python3.6/site-packages/django/db/backends/mysql/base.py", line 227, in get_new_connection
return Database.connect(**conn_params)
File "/venv/lib/python3.6/site-packages/MySQLdb/__init__.py", line 85, in Connect
return Connection(*args, **kwargs)
File "/venv/lib/python3.6/site-packages/MySQLdb/connections.py", line 204, in __init__
super(Connection, self).__init__(*args, **kwargs2)
django.db.utils.OperationalError: (2013, "Lost connection to MySQL server at 'reading initial communication packet', system error: 0")
Any ideas where can be problem please?

bash-4.2$ KIWI_DB_ENGINE=django.db.backends.postgresql_psycopg2 /Kiwi/manage.py migrate
django.db.backends.postgresql_psycopg2
This is setting an environment variable inside the docker container and I'm not sure if that works or which one takes precendece.
If you want somebody to help you post the entire docker-compose.yml (or whatever kubernetes control file you use). Clearly the application thinks it is configured to talk to MySQL and fails when MySQL isn't available.

So problem was with version of used docker image.
I used docker image tag kiwitcms/kiwi:6.2 and I thought it's the latest release. But it's not. This version(docker image) doesn't have code for changing DB engine. I changed version of docker tag to latest and it works pretty well now.