在mac下使用brew安装mysql,之前没有使用过,今天启动的时候发现启动不了

huijundeMacBook-Pro:bin huijunzhang$ mysql
ERROR (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

查看mysql的安装位置:

huijundeMacBook-Pro:bin huijunzhang$ which mysql
/usr/local/bin/mysql

说明mysql还是安装过的

huijundeMacBook-Pro:bin huijunzhang$ brew info mysql
mysql: stable 5.7. (bottled)
Open source relational database management system
https://dev.mysql.com/doc/refman/5.7/en/
Conflicts with: mariadb, mariadb-connector-c, mysql-cluster, mysql-connector-c, percona-server
/usr/local/Cellar/mysql/5.7. (, files, 445.0M) *
Poured from bottle on -- at ::
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/mysql.rb
==> Dependencies
Build: cmake ✘
Required: openssl ✔
==> Options
--with-archive-storage-engine
Compile with the ARCHIVE storage engine enabled
--with-blackhole-storage-engine
Compile with the BLACKHOLE storage engine enabled
--with-debug
Build with debug support
--with-embedded
Build the embedded server
--with-local-infile
Build with local infile loading support
--with-test
Build with unit tests
==> Caveats
We've installed your MySQL database without a root password. To secure it run:
mysql_secure_installation To connect run:
mysql -uroot To have launchd start mysql now and restart at login:
brew services start mysql
Or, if you don't want/need a background service you can just run:
mysql.server start

有可能是mysql服务没有启动

huijundeMacBook-Pro:bin huijunzhang$ mysql.server start
Starting MySQL
. SUCCESS!

哈哈,mysql服务启动了,好开心呀!

接下来要试试能否进入mysql了

huijundeMacBook-Pro:bin huijunzhang$ mysql
ERROR (): Access denied for user 'huijunzhang'@'localhost' (using password: NO)

这个提示应该很明显了吧,权限问题,mysql下没有huijunzhang这个用户,装过mysql的朋友应该知道,安装mysql默认的用户名是root,端口是3306,别问我为什么知道。。。

那就使用root用户启动:

huijundeMacBook-Pro:bin huijunzhang$ sudo mysql
Password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is
Server version: 5.7. Homebrew Copyright (c) , , 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>
mysql> show databases
-> ;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
rows in set (0.01 sec)

哈哈,问题解决了,好开心呀!

总结:出现“ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)”的根本原因就是mysql服务没有启动,下面总结下mysql在mac下的几个常用的命令吧!

$ mysql.server start
$ mysql.server restart
$ mysql.server stop
$ mysql.server status
$ mysql -u root -p

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