Mac brew 安装Mysql

关于brew的使用教程就不再赘述，下面主要讲一下怎样使用brew安装Mysq
1.打开terminal也就是我们所的命令窗口
2.运行brew search mysql，我们可以看到Mysql相关软件

automysqlbackup      mysql++       mysql-cluster        mysql-connector-c++       mysql-search-replace 
[email protected]      [email protected]   mysql        mysql-client       mysql-connector-c     mysql-sandbox      
mysql-utilities      [email protected]             mysqltuner

==> Casks
homebrew/cask/mysql-connector-python    homebrew/cask/mysql-shell
homebrew/cask/mysql-utilities     homebrew/cask/navicat-for-mysql      
homebrew/cask/sqlpro-for-mysql

3.我们可以选择安装的版本，也可以粗暴的用命令brew install mysql安装最新版

==> Installing dependencies for mysql: openssl
==> Installing mysql dependency: openssl
==> Downloading https://homebrew.bintray.com/bottles/openssl-1.0.2p.mojave.bottle.tar.gz
######################################################################## 100.0%
==> Pouring openssl-1.0.2p.mojave.bottle.tar.gz
==> Caveats
A CA file has been bootstrapped using certificates from the SystemRoots
keychain. To add additional certificates (e.g. the certificates added in
the System keychain), place .pem files in
  /usr/local/etc/openssl/certs

and run
  /usr/local/opt/openssl/bin/c_rehash

openssl is keg-only, which means it was not symlinked into /usr/local,
because Apple has deprecated use of OpenSSL in favor of its own TLS and crypto libraries.

If you need to have openssl first in your PATH run:
  echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.zshrc

For compilers to find openssl you may need to set:
  export LDFLAGS="-L/usr/local/opt/openssl/lib"
  export CPPFLAGS="-I/usr/local/opt/openssl/include"

==> Summary
  /usr/local/Cellar/openssl/1.0.2p: 1,793 files, 12MB
==> Installing mysql
==> Downloading https://homebrew.bintray.com/bottles/mysql-8.0.12.mojave.bottle.tar.gz
######################################################################## 100.0%
==> Pouring mysql-8.0.12.mojave.bottle.tar.gz
==> /usr/local/Cellar/mysql/8.0.12/bin/mysqld --initialize-insecure --user=chenjianyuan --basedir=/usr/local/Cellar/mysql/8.0.12 --datadir=/usr/local/var/mysql --tmpdir=/tmp
==> Caveats
We've installed your MySQL database without a root password. To secure it run:
    mysql_secure_installation

MySQL is configured to only allow connections from localhost by default

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
==> Summary
  /usr/local/Cellar/mysql/8.0.12: 255 files, 233.0MB
==> Caveats
==> openssl
A CA file has been bootstrapped using certificates from the SystemRoots
keychain. To add additional certificates (e.g. the certificates added in
the System keychain), place .pem files in
  /usr/local/etc/openssl/certs

and run
  /usr/local/opt/openssl/bin/c_rehash

openssl is keg-only, which means it was not symlinked into /usr/local,
because Apple has deprecated use of OpenSSL in favor of its own TLS and crypto libraries.

If you need to have openssl first in your PATH run:
  echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.zshrc

For compilers to find openssl you may need to set:
  export LDFLAGS="-L/usr/local/opt/openssl/lib"
  export CPPFLAGS="-I/usr/local/opt/openssl/include"

==> mysql
We've installed your MySQL database without a root password. To secure it run:
    mysql_secure_installation

MySQL is configured to only allow connections from localhost by default

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

安装过程会输出一些配置以及命令相关信息。
4.输入命令mysql.server start 启动Mysql
5.配置Mysql，最简单的方法就是使用使用mysql的配置脚本/usr/local/opt/mysql/bin/mysql_secure_installation启动这个脚本，即可根据如下命令提示进行初始化设置

Securing the MySQL server deployment.

Connecting to MySQL using a blank password.

VALIDATE PASSWORD COMPONENT 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 component?

Press y|Y for Yes, any other key for No: y   //使用密码验证

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

Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 0  // 选择密码验证等级
Please set the password for root here.

New password:    // 输入新密码

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  
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) : y   //删除匿名用户
Success.


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) : n // 是否禁止远程登录

 ... 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.


Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y  // 是否删除测试库
 - 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  // 刷新数据库权限
Success.

All done!   // 完成

以上我们就完成了Mysql的安装。