Mac mysql卸载和安装教程

左手的ㄟ右手 2024-04-18 17:00 91阅读 0赞

卸载

1.brew remove mysql

2.brew cleanup

3.launchctl unload -w ~/Library/LaunchAgents/com.mysql.mysqld.plist

4.rm ~/Library/LaunchAgents/com.mysql.mysqld.plist

5.sudo rm -rf /usr/local/var/mysql  
————————————————

安装

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 
    mysql@5.5      mysql@5.7   mysql        mysql-client       mysql-connector-c     mysql-sandbox      
    mysql-utilities      mysql@5.6             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。