错误问题
原因：把MySQL的用户密码配置成secrets，然后挂载mysql，mysql会一直报错，无法完成初始
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Version: '5.7.33' socket: '/var/run/mysqld/mysqld.sock' port: 0 MySQL Community Server (GPL)
2021-04-07 15:06:32+08:00 [Note] [Entrypoint]: Temporary server started.
Warning: Unable to load '/usr/share/zoneinfo/iso3166.tab' as time zone. Skipping it.
Warning: Unable to load '/usr/share/zoneinfo/leap-seconds.list' as time zone. Skipping it.
2021-04-07T07:06:58.526144Z 0 [Note] InnoDB: page_cleaner: 1000ms intended loop took 24159ms. The settings might not be optimal. (flushed=200 and evicted=0, during the time.)
Warning: Unable to load '/usr/share/zoneinfo/zone.tab' as time zone. Skipping it.
Warning: Unable to load '/usr/share/zoneinfo/zone1970.tab' as time zone. Skipping it.
2021-04-07 15:06:58+08:00 [Note] [Entrypoint]: Creating database wordpress
mysql: [ERROR] unknown option '--"'
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解决问题
问题是我使用该echo 'secret' | base64命令创建了我的机密，而echo命令自动插入了结尾的换行符。
使用echo \-n 'secret' | base64代替。✔️
因此我没有注意到日志输出中有换行符。希望这可以帮助一些也使用echo命令对base64进行编码的人。
参考文章： https://stackoverflow.com/questions/62985541/mysql-unknown-option-in-kubernetes#
