查看“基于Alpine的mysql Docker镜像”的源代码

=usage=
<pre>

注意  直接跑docker  docker run -it --name mysql 会再次生成mariadb.conf 小心 
数据库文件就是当前目录的mysql 

cat .env 
# Environment variables for docker-compose command

# Building
ALPINE_VERSION=3.14
IMAGE_NAME=evan886/mariadb-alpine

# Running
CONTAINER_NAME=mysql
MYSQL_ROOT_PASSWORD=root2240881
MYSQL_USER=evan
MYSQL_PASSWORD=evanlai36
MYSQL_DATABASE=admin

HOST_ADDRESS=3306



cat docker-compose.yml 
version: '2'
services:

  mysql:
    image: ${IMAGE_NAME}:${ALPINE_VERSION}
    container_name: ${CONTAINER_NAME}
    environment:
      - MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD}
      - MYSQL_USER=${MYSQL_USER}
      - MYSQL_PASSWORD=${MYSQL_PASSWORD}
      - MYSQL_DATABASE=${MYSQL_DATABASE}
    volumes:
      - .:/app
    ports:
      - "${HOST_ADDRESS}:3306"



 docker-compose  up -d

mysql -uroot -p -h127.0.0.1
</pre>




=mysql_secure_installation设置初始密码无效=
<pre>
原因 

以前的SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');已经被弃用，取而代之的是ALTER USER 'root'@'localhost' IDENTIFIED BY '新密码';


user mysql;
ALTER USER 'root'@'localhost' IDENTIFIED BY '新密码';
flush privileges;
exit;

</pre>

[https://blog.csdn.net/Fullspeeder/article/details/111184762  mariadb通过mysql_secure_installation设置初始密码无效]

[https://blog.xzr.moe/archives/4/ mysql_secure_installation竟无效]

= see also=

类似的参考 
https://github.com/yobasystems/alpine-mariadb/blob/master/alpine-mariadb-amd64/Dockerfile


[https://blog.csdn.net/topwqp/article/details/52072394  mysql配置文件生效测试]

=trouble shooting=
<pre>

我最终在Dockerfile 添加 

COPY  mariadb-server.cnf /etc/my.cnf.d/mariadb-server.cnf
EXPOSE 3306





 van@myxps:~$ mysql -uroot -p -h127.0.0.1 
Enter password: 
ERROR 2013 (HY000): Lost connection to MySQL server at 'handshake: reading initial communication packet', system error: 11


解决办法 注释掉这行  skip-networking      跳过TCP/IP连接
cat /etc/my.cnf.d/mariadb-server.cnf

[mysqld]
#skip-networking


处理过程  其实一开始telent 3306不通就差不多是网络问题啦 , 因为容器里面是可用的 

别人的解决办法 我也记录一下 虽然和我的不同 

1、将 /etc/my.cnf 中的bind-address参数修改成0.0.0.0，表示允许任何ip主机访问此数据库
and 
skip-name-resolve

</pre>


[https://segmentfault.com/q/1010000003840346 Docker:无法连接容器中的mysql]

https://stackoverflow.com/questions/56580412/mysql-installation-for-alpine-linux-in-docker/68830928#68830928

[https://serverfault.com/questions/616696/lost-connection-to-mysql-server-at-reading-initial-communication-packet-syste Lost connection to MySQL server at 'reading initial communication packet', system error: 0 ]

[[category:devops]]  [[category:Container]]