Mysql2 ::错误:无法通过套接字'/tmp/mysql.sock'连接到本地MySQL服务器

Question

运行时rake db:migrate,我收到此错误:

Mysql2::Error: Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

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我在这里查看了其他人的问题,他们的解决方案都没有帮助我,例如:

解决方案一

mysql.server start

收益:

Starting MySQL

.错误!服务器退出而不更新PID文件(/usr/local/var/mysql/something.pid).

解决方案二

mysqladmin variables | grep socket

收益:

error: 'Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)'

Check that mysqld is running and that the socket: '/tmp/mysql.sock' exists!

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进一步说明: 我尝试使用自制程序重新安装mysql,这是成功的,我仍然收到相同的错误:

Error: Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

Answer 1

我解决了!

首先,去 database.yml

更改host: localhost到host: 127.0.0.1

而已!

编辑:这暂时有效,但是当我今天重新启动计算机时,它开始抛出相同的错误.修复是从网站上安装mysql,然后我的应用程序可以再次成功连接到mysql.

Answer 2

env\xef\xbc\x9arails5 mysql5.7.32

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作为补充，我也遇到了这个问题'Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)'，但是错误的原因是socket文件引起的

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数据库.yml

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default: &default\n  socket: /tmp/mysql.sock\n

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mysql -uroot -p然后登录mysqlshow variables like 'socket';

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+---------------+-----------------------------+\n| Variable_name | Value                       |\n+---------------+-----------------------------+\n| socket        | /var/run/mysqld/mysqld.sock |\n+---------------+-----------------------------+\n

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所以更改database.yml

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default: &default\n  socket: /var/run/mysqld/mysqld.sock # The line can also be deleted\n

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