Tag: ruby on rails

如何为MySQL创建数据库目录结构？

我正在学习本教程： https://www.digitalocean.com/community/tutorials/how-to-use-mysql-with-your-ruby-on-rails-application-on-ubuntu-14-04 到目前为止，我安装了mysql-server mysql-client libmysqlclient-dev ，我想告诉MySQL创建它的数据库目录结构，它将使用sudo mysql_install_db存储其信息。 $ sudo mysql_install_db [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld –initialize [ERROR] The data directory needs to be specified. 我以为运行mysqld –initialize会解决问题： $ mysqld –initialize mysqld: Can’t create directory ‘/var/lib/mysql/’ (Errcode: 17 – File exists) [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use –explicit_defaults_for_timestamp server […]