首先這次安裝使用的是brew， brew可以自行安裝.
安裝Homebrew别惦，詳細(xì)見[Homebrew](http://brew.sh/)官網(wǎng)允趟。
brew doctor
確認(rèn)brew在正常工作屎慢。
brew update
更新包。
brew install mysql
安裝mysql
那么我們就按照brew的提示運(yùn)行 mysql_secure_installation咽块，運(yùn)行后會(huì)報(bào)錯(cuò)：(第一個(gè)錯(cuò)誤双戳！)
Securing the MySQL server deployment.
Enter password for user root:
Error: Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
原因是沒有啟動(dòng)服務(wù)
運(yùn)行 mysql.server start 然后運(yùn)行 mysql_secure_installation
在此期間如果你之前安裝過mysql 需要注意把需要?jiǎng)h除的文件刪除，此次因?yàn)闆]有刪除干凈運(yùn)行 mysql.server start 出現(xiàn)錯(cuò)誤：
wanyummydeMacBook-Air:~ wanyummy$ sudo mysql.server start
Password:
Starting MySQL
... ERROR! The server quit without updating PID file (/usr/local/var/mysql/wanyummydeMacBook-Air.local.pid)
我的解決方案：將之前出現(xiàn)錯(cuò)誤的文件刪除(出現(xiàn)這種問題的原因很多)
cd /usr/local/var/mysql
sudo rm *.err && sudo rm *.pid
sudo reboot
sudo mysql.server start
在此運(yùn)行mysql_secure_installation
Securing the MySQL server deployment.
Connecting to MySQL using a blank password.
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: y
There are three levels of password validation policy:
LOW Length >= 8
MEDIUM Length >= 8, numeric, mixed case, and special characters
STRONG Length >= 8, numeric, mixed case, special characters and dictionary file
// 這里提示選一個(gè)密碼強(qiáng)度等級(jí)
Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 1
Please set the password for root here.
// 然后按照所選的密碼強(qiáng)度要求設(shè)定密碼
New password:
Re-enter new password:
Estimated strength of the password: 50
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
... Failed! Error: Your password does not satisfy the current policy requirements
New password:
Re-enter new password:
Estimated strength of the password: 100
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
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.
// 這里刪除默認(rèn)無密碼用戶
Remove anonymous users? (Press y|Y for Yes, any other key for No) : y
Success.
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.
// 禁止遠(yuǎn)程root登錄，我選的是不禁止飒货。因?yàn)槲业膍ac上的數(shù)據(jù)庫(kù)不會(huì)放到公網(wǎng)上魄衅，也不會(huì)存什么敏感數(shù)據(jù)
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : no
... skipping.
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.
// 這里刪除默認(rèn)自帶的test數(shù)據(jù)庫(kù)
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y
- Dropping test database...
Success.
- Removing privileges on test database...
Success.
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) : y
Success.
All done!
登錄(一定要記住密碼！Ｌ粮ā；纬妗！？鄱铡Ｕ芤！)
mysql -u root -p
