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icon: edit
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date: 2021-09-15
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category:
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- Docker
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tag:
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- Docker
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- mysql
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headerDepth: 5
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---
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# Docker 安装mysql8.0
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### 一、写在前面
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今天自己原本的mysql服务配置出了问题，刚好自己接触了容器技术，就想着自己使用docker重新部署一个mysql服务。
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### 二、下载步骤
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首先要获取mysql镜像（可以通过官网下载或者从公司的仓库获取），下面演示从官网下载步骤
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#### 2.1 docker search mysql，可以看到搜索的结果，这个结果是按照一定的星级评价规则排序的。
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#### 2.2 docker pull mysql 拉取一个合适版本的mysql到本地服务器
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### 三、启动镜像
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```txt
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-p 3307:3306：将容器的3307端口映射到主机的3306端口；
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-v $PWD/mysql:/var/lib/mysql：将主机当前目录下的/mysql挂载到容器的/var/lib/mysql；
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-e MYSQL_ROOT_PASSWORD=123456：初始化root用户的密码；
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–name 给容器命名，test_mysql
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-d 表示刚下载的镜像id
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```
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命令行如下：
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```shell
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docker run \
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-p 3307:3306 \
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--name mysql_3307 \
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--privileged=true \
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-v /wanghao/mysql_3307/conf.d:/etc/mysql/conf.d \
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-v /wanghao/mysql_3307/logs:/logs \
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-v /wanghao/mysql_3307/data:/var/lib/mysql \
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-v /etc/localtime:/etc/localtime \
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-v /wanghao/mysql_3307/mysql-files:/var/lib/mysql-files \
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-e MYSQL_ROOT_PASSWORD=123456 \
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-d mysql
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```
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### 四、局域网无法访问数据库的方法
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```sql
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create user 'wanghao'@'%' identified with mysql_native_password by 'Wh*123456';
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grant all privileges on *.* to 'wanghao'@'%';
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```
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注意：这里platform可以任意命名，表示赋予这个账户的权限，这里是赋予所有的权限
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```sql
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update user set host='%' where user='root';
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alter user 'root'@'%' identified with mysql_native_password by 'root';
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```
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刷新权限：
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```sql
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mysql> flush privileges;
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Query OK, 0 rows affected (0.00 sec)
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```
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### 五、表名大小写问题
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MySQL 上了 8 后，在 Linux 端，对于 lower_case_table_names 参数，只能在初始化的时候设置了，若初始化的时候没设置，那后面就傻愣愣了
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示例：
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当前本地已有环境设置为 lower_case_table_names = 1 了，将 lower_case_table_names 修改为 0 会发生什么。
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测试版本
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```shell
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root [(none)]> select version();
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+-----------+
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| version() |
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+-----------+
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| 8.0.18 |
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+-----------+
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1 row in set (0.00 sec)
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```
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lower_case_table_names不是动态参数，将my.cnf 中 lower_case_table_names 改为 0
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重启 mysql
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查看错误日志
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```log
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2020-09-22T17:16:49.781973+08:00 1 [ERROR] [MY-011087] [Server] Different lower_case_table_names settings for server ('0') and data dictionary ('1').
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2020-09-22T17:16:49.782401+08:00 0 [ERROR] [MY-010020] [Server] Data Dictionary initialization failed.
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2020-09-22T17:16:49.782620+08:00 0 [ERROR] [MY-010119] [Server] Aborting
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```
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官方是这么说的
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地址：https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html
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所以，除非你是安装在 windows上或者可以确保开发人员实行规范建表等操作，不然就在初始化配置my.cnf时候就将 lower_case_table_names = 1 配置上去吧
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#### docker 部署要大小写忽略只能 运行容器命令的时候加上了
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```shell
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docker run \
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-p 3307:3306 \
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--name mysql_3307 \
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--privileged=true \
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-v /wanghao/mysql_3307/conf.d:/etc/mysql/conf.d \
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-v /wanghao/mysql_3307/logs:/logs \
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-v /wanghao/mysql_3307/data:/var/lib/mysql \
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-v /etc/localtime:/etc/localtime \
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-v /wanghao/mysql_3307/mysql-files:/var/lib/mysql-files \
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-e MYSQL_ROOT_PASSWORD=123456 \
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-d mysql --lower-case-table-names=1
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```
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