我似乎无法获得MySQL的数据要坚持,如果我有以下.yml
多克尔 - 撰写持久性数据的MySQL
version: '2'
services:
# other services
data:
container_name: flask_data
image: mysql:latest
volumes:
- /var/lib/mysql
command: "true"
mysql:
container_name: flask_mysql
restart: always
image: mysql:latest
environment:
MYSQL_ROOT_PASSWORD: 'test_pass' # TODO: Change this
MYSQL_USER: 'test'
MYSQL_PASS: 'pass'
volumes_from:
- data
ports:
- "3306:3306"
我的理解运行$ docker-compose down
的是,在使用volumes: - /var/lib/mysql
我data
容器将其映射到我的地方机器目录,其中mysql将数据存储到容器,并且由于此映射,即使容器被销毁,数据也应该保留。而mysql
容器只是一个客户端接口到数据库,并可以看到本地目录,因为volumes_from: - data
试图解答这个问题,但它不起作用。 Docker-Compose Persistent Data Trouble
编辑
改变了我的.yml
如下图所示,创建的目录./data
但现在当我运行docker-compose up --build
的mysql
容器无法启动抛出错误说
data:
container_name: flask_data
image: mysql:latest
volumes:
- ./data:/var/lib/mysql
command: "true"
mysql:
container_name: flask_mysql
restart: always
image: mysql:latest
environment:
MYSQL_ROOT_PASSWORD: 'test_pass' # TODO: Change this
MYSQL_USER: 'test'
MYSQL_PASS: 'pass'
volumes_from:
- data
ports:
- "3306:3306"
flask_mysql | mysqld: Can't create/write to file '/var/lib/mysql/is_writable' (Errcode: 13 - Permission denied)
flask_mysql | 2016-08-26T22:29:21.182144Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
flask_mysql | 2016-08-26T22:29:21.185392Z 0 [ERROR] --initialize specified but the data directory exists and is not writable. Aborting.
请参阅[我的码头文章](https://martin-thoma.com/docker/)和[我最小的示例](https:// github。com/MartinThoma/flask_mysql_dockerized) –