Mac 下安装 MySQL 经历

brew install mysql

$ brew install mysql
==> Downloading http://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.19.tar.gz/from/http://cdn.mysql.com/

curl: (22) The requested URL returned error: 404 Not Found
Error: Download failed: http://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.19.tar.gz/from/http://cdn.mysql.com/

brew update

Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local 
Could not symlink share/man/man8/mysqld.8 
/usr/local/share/man/man8 is not writable.

#开启权限 
$ sudo chown -R $(whoami) /usr/local/ 
#重新link一次 
$ brew link mysql

mysql -uroot -p

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

mysql.server start

mysql_secure_installation

VALIDATE PASSWORD PLUGIN can be used to test passwords
and improve security. It checks the strength of password
and allows the users to set only those passwords which are
secure enough. Would you like to setup VALIDATE PASSWORD plugin?
Press y|Y for Yes, any other key for No:
Please set the password for root here.
New password:
Re-enter new password:

By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.
Remove anonymous users? (Press y|Y for Yes, any other key for No) :

Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.
Disallow root login remotely? (Press y|Y for Yes, any other key for No) :

By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.
Remove test database and access to it? (Press y|Y for Yes, any other key for No) :

Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
Reload privilege tables now? (Press y|Y for Yes, any other key for No) :

mysql -uroot -p