错误来源是：
跟着b站的谷粒商城项目做，前面的视频中设置了数据库的字符集编码，但是后面自己发现了MySQL容器重启报错，不停的在重启
查看log信息可以使用命令：docker logs 容器id
错误如下：
2022-07-18 05:15:28+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:15:28+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.n6HlSOVhxC 2022-07-18T05:15:28.495305Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:15:28.496127Z 0 [ERROR] Aborting 2022-07-18 05:15:28+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:15:28+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.6KcBJxhiq2 2022-07-18T05:15:28.922147Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:15:28.923008Z 0 [ERROR] Aborting 2022-07-18 05:15:29+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:15:29+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.P12cpvKWXz 2022-07-18T05:15:29.435644Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:15:29.436512Z 0 [ERROR] Aborting 2022-07-18 05:15:30+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:15:30+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.6R8npalvaH 2022-07-18T05:15:30.099778Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:15:30.100634Z 0 [ERROR] Aborting 2022-07-18 05:15:31+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:15:31+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.r9xLrd1ydi 2022-07-18T05:15:31.162485Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:15:31.163422Z 0 [ERROR] Aborting 2022-07-18 05:15:33+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:15:33+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.WCNU9W4Cge 2022-07-18T05:15:33.112496Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:15:33.113309Z 0 [ERROR] Aborting 2022-07-18 05:15:36+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:15:36+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.QD3th2xOxE 2022-07-18T05:15:36.562999Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:15:36.563865Z 0 [ERROR] Aborting 2022-07-18 05:15:43+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:15:43+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.tgaMZHREXm 2022-07-18T05:15:43.288878Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:15:43.289861Z 0 [ERROR] Aborting 2022-07-18 05:15:56+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:15:56+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.Hty5diwdpa 2022-07-18T05:15:56.530008Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:15:56.530843Z 0 [ERROR] Aborting 2022-07-18 05:16:22+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started. 2022-07-18 05:16:22+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.foO50I6KAZ 2022-07-18T05:16:22.437806Z 0 [ERROR] COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'latin1' 2022-07-18T05:16:22.438653Z 0 [ERROR] Aborting
也就是说，前面我在
vi /mydata/mysql/conf/my.cnf
设置的如下字符集编码内容是有问题
[client] default-character-set=utf8 [mysql] default-character-set=utf8 [mysqld] init_connect='SET collation_connection = utf8_unicode_ci' init_connect='SET NAMES utf8' character-set-server=utf8 collation-server=utf8_unicode_ci skip-character-set-client-handshake skip-name-resolve
发现删除my.cnf文件MySQL容器又可以正常启动
然后把my.cnf文件做出如下修改
[client] default_character_set=utf8 [mysql] default-character-set=utf8 [mysqld] collation_server = utf8_general_ci character_set_server = utf8 skip-character-set-client-handshake skip-name-resolve
重启MySQL容器
docker restart mysql
进入容器内部查看
docker exec -it mysql /bin/bash
修改字符集编码成功，退出容器重启MySQL也不存在报错
默认MySQL5.7的字符集编码是：
show variables like 'character\_set\_%';
注意
docker安装完MySQL并run出容器后，建议请先修改完字符集编码后再新建mysql库-表-插数据
