mysql8.0 Mysql8.0 ではデフォルトの認証形式を mysql_native_password から caching_sha2_password に変更している。 https://dev.mysql.com/doc/refman/8.0/en/caching-sha2-pluggable-authentication.html 起きたこと rake db:create で下記エラー Mysql2::Error (Authentication plugin 'caching_sha2_password' cannot be loaded: /usr/lib/x86_64-linux-gnu/mariadb18/plugin/caching_sha2_password.so: cannot open shared object file: No such file or direc
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