如何通过Dockerfile设置mysql系统变量,如max_allowed_pa​​cket max_allowed_pa​​cket,character_set_server和collat​​ion-server？

Question

我正在使用Docker for mysql.需要在Dockerfile中设置系统变量,如max_allowed_pa​​cket,character_set_server和mysql的collat​​ion-server.我尝试使用Dockerfile中提供的以下命令.但它不起作用.

Dockerfile:

FROM mysql:latest
VOLUME /opt/data:/var/lib/mysql
ENV MYSQL_ROOT_PASSWORD password
RUN sed -i 's/^max_allowed_packet.*/max_allowed_packet = 1073741824/' /etc/mysql/my.cnf
RUN sed -i "/\[mysqld]/a character-set-server=utf8mb4" /etc/mysql/my.cnf
RUN sed -i 's/^collation-server.*/collation-server = utf8mb4_unicode_ci/' /etc/mysql/my.cnf 
CMD ["mysqld"]

构建命令:

sudo docker build -t mysqltest:1 .

运行命令:

sudo docker run -p 3306:3306 -restart=always -d mysqltest:1

Answer 1

有几种方法,这是一种方法:

CMD ["--character-set-server=utf8mb4", "--collation-server=utf8mb4_unicode_ci", "--max-allowed-packet=1073741824"]

作为替代方案,您可以放入自定义配置文件 /etc/mysql/conf.d

定制mysql.cnf:

[mysqld]
max_allowed_packet = 1073741824
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci

Dockerfile:

FROM mysql:latest
COPY ./custom-mysql.cnf /etc/mysql/conf.d/

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