在Mac本地中mysql中,刚才不小心,drop掉了mysql表:
<code>➜ AliyunRdsMysql mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 34 Server version: 5.7.22 MySQL Community Server (GPL) Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | your_db | | performance_schema | | sys | +--------------------+ 5 rows in set (0.02 sec) mysql> drop database mysql; Query OK, 31 rows affected, 2 warnings (0.18 sec) mysql> </code>
现在想要尝试看看能否恢复。
-》否则mysql表中保存的,用于mysql的管理信息,包括用户等信息,都丢失了,就不能正常使用了。
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此处没有要恢复的数据库了,所以直接去试试重新初始化
<code>mysqld --initialize </code>
结果出错:
但是进去后:
<code>➜ mysql git:(master) ✗ mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 39 Server version: 5.7.22 MySQL Community Server (GPL) Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | +--------------------+ 1 row in set (0.00 sec) mysql> </code>
发现没有了,之前还存在的,默认的mysql数据库了啊。
而且很搞笑的是:
root用户的密码,还是之前自己设置的,而不是上面刚生成的临时的密码。
所以,暂时懒得继续研究了。先能用Mac中本地的mysql再说。后续有问题再说。
【总结】
此处就是:
<code>mysqld --initialize </code>
去重新初始化数据库
-》但是并没有看到希望看到的:
重置后,会生成mysql数据库。
而且好玩的是:
重置后,root用户的密码,都不是重置生成的临时密码,而还是我之前自己设置的密码。
暂时不管了,先能用mysql,后面有问题再说。
【后记】
后来出了:
【已解决】Mac中mysql中创建数据库出错:ERROR 1006 HY000 Can’t create database errno 230174752
最终是,完全删除旧的,重新安装,重新保证data目录及子目录有权限,以及删除sock,才保证mysql可以正常启动的。
又经历重置密码,才得以正常使用mysql,才能去新建数据库。
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