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我在 Mac High Sierra 上运行 Docker。我想运行 Docker 容器来容纳我的 Django 实例和 MySql 实例。我有以下 docker-compose.yml 文件 ...
version: '3'
services:
web:
restart: always
build: ./web
ports: # to access the container from outside
- "8000:8000"
env_file: .env
environment:
DEBUG: 'true'
command: /usr/local/bin/gunicorn maps.wsgi:application -w 2 -b :8000
apache:
restart: always
build: ./apache/
ports:
- "80:80"
#volumes:
# - web-static:/www/static
links:
- web:web
mysql:
restart: always
image: mysql:5.7
environment:
MYSQL_DATABASE: 'maps_data'
# So you don't have to use root, but you can if you like
MYSQL_USER: 'chicommons'
# You can use whatever password you like
MYSQL_PASSWORD: 'password'
# Password for root access
MYSQL_ROOT_PASSWORD: 'password'
ports:
- "3406:3406"
volumes:
- my-db:/var/lib/mysql
volumes:
my-db:
我设置的“.env”文件是这样的……
DB_NAME=maps_data
DB_USER=chicommons
DB_PASS=password
DB_SERVICE=mysql
DB_PORT=3406
在我的 web (Django) 实例中,我已经设置了我的 settings.py db ...
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': os.environ['DB_NAME'],
'USER': os.environ['DB_USER'],
'PASSWORD': os.environ['DB_PASS'],
'HOST': os.environ['DB_SERVICE'],
'PORT': os.environ['DB_PORT']
}
}
但是,当我运行“docker-compose up”时,出现以下错误,提示无法连接到数据库......
web_1 | Traceback (most recent call last):
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/base/base.py", line 216, in ensure_connection
web_1 | self.connect()
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/base/base.py", line 194, in connect
web_1 | self.connection = self.get_new_connection(conn_params)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/mysql/base.py", line 236, in get_new_connection
web_1 | return Database.connect(**conn_params)
web_1 | File "/usr/local/lib/python3.7/site-packages/MySQLdb/__init__.py", line 84, in Connect
web_1 | return Connection(*args, **kwargs)
web_1 | File "/usr/local/lib/python3.7/site-packages/MySQLdb/connections.py", line 179, in __init__
web_1 | super(Connection, self).__init__(*args, **kwargs2)
web_1 | MySQLdb._exceptions.OperationalError: (2002, "Can't connect to MySQL server on 'mysql' (115)")
web_1 |
web_1 | The above exception was the direct cause of the following exception:
web_1 |
web_1 | Traceback (most recent call last):
web_1 | File "manage.py", line 21, in <module>
web_1 | main()
web_1 | File "manage.py", line 17, in main
web_1 | execute_from_command_line(sys.argv)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line
web_1 | utility.execute()
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/management/__init__.py", line 365, in execute
web_1 | self.fetch_command(subcommand).run_from_argv(self.argv)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/management/base.py", line 288, in run_from_argv
web_1 | self.execute(*args, **cmd_options)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/management/base.py", line 332, in execute
web_1 | self.check()
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/management/base.py", line 364, in check
web_1 | include_deployment_checks=include_deployment_checks,
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/management/base.py", line 351, in _run_checks
web_1 | return checks.run_checks(**kwargs)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/checks/registry.py", line 73, in run_checks
web_1 | new_errors = check(app_configs=app_configs)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/checks/model_checks.py", line 27, in check_all_models
web_1 | errors.extend(model.check(**kwargs))
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/models/base.py", line 1200, in check
web_1 | errors.extend(cls._check_fields(**kwargs))
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/models/base.py", line 1272, in _check_fields
web_1 | errors.extend(field.check(**kwargs))
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/models/fields/__init__.py", line 894, in check
web_1 | errors = super().check(**kwargs)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/models/fields/__init__.py", line 206, in check
web_1 | errors.extend(self._check_backend_specific_checks(**kwargs))
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/models/fields/__init__.py", line 303, in _check_backend_specific_checks
web_1 | return connections[db].validation.check_field(self, **kwargs)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/base/validation.py", line 21, in check_field
web_1 | field_type = field.db_type(self.connection)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/models/fields/__init__.py", line 648, in db_type
web_1 | return connection.data_types[self.get_internal_type()] % data
web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/functional.py", line 36, in __get__
web_1 | res = instance.__dict__[self.name] = self.func(instance)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/mysql/base.py", line 133, in data_types
web_1 | if self.features.supports_microsecond_precision:
web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/functional.py", line 36, in __get__
web_1 | res = instance.__dict__[self.name] = self.func(instance)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/mysql/features.py", line 65, in supports_microsecond_precision
web_1 | return self.connection.mysql_version >= (5, 6, 4)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/functional.py", line 36, in __get__
web_1 | res = instance.__dict__[self.name] = self.func(instance)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/mysql/base.py", line 345, in mysql_version
web_1 | with self.temporary_connection() as cursor:
web_1 | File "/usr/local/lib/python3.7/contextlib.py", line 112, in __enter__
web_1 | return next(self.gen)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/base/base.py", line 576, in temporary_connection
web_1 | cursor = self.cursor()
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/base/base.py", line 255, in cursor
web_1 | return self._cursor()
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/base/base.py", line 232, in _cursor
web_1 | self.ensure_connection()
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/base/base.py", line 216, in ensure_connection
web_1 | self.connect()
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/utils.py", line 89, in __exit__
web_1 | raise dj_exc_value.with_traceback(traceback) from exc_value
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/base/base.py", line 216, in ensure_connection
web_1 | self.connect()
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/base/base.py", line 194, in connect
web_1 | self.connection = self.get_new_connection(conn_params)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/db/backends/mysql/base.py", line 236, in get_new_connection
web_1 | return Database.connect(**conn_params)
web_1 | File "/usr/local/lib/python3.7/site-packages/MySQLdb/__init__.py", line 84, in Connect
web_1 | return Connection(*args, **kwargs)
web_1 | File "/usr/local/lib/python3.7/site-packages/MySQLdb/connections.py", line 179, in __init__
web_1 | super(Connection, self).__init__(*args, **kwargs2)
web_1 | django.db.utils.OperationalError: (2002, "Can't connect to MySQL server on 'mysql' (115)")
这是怎么回事?如何让我的 Django web docker 实例连接到我的 MySql docker 实例?
最佳答案
可能是端口错误
version: '3'
services:
web:
...
links: # <-- add this
- mysql # <-- add this
apache:
...
mysql:
...
ports: # <-- add this
- "3406:3306" # <-- change myslq port inside is 3306 not 3406
volumes:
my-db:
关于mysql - 如何将我的 docker Django 实例连接到我的 docker mysql 实例?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/60285469/
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