Use Homebrew to install MySQL5.7 under Mac

1. Install Homebrew & Oh-My-Zsh

How to install homebrew under mac
MacOS install Homebrew and Oh-My-Zsh

2. Query software information

% brew search mysql

==> Formulae
automysqlbackup       mysql                 mysql++               mysql-client          [email protected]      mysql-connector-c++   mysql-sandbox         mysql-search-replace  [email protected]             [email protected]             mysqltuner            qt-mysql

==> Casks
mysql-connector-python                                mysql-shell                                           mysqlworkbench                                        navicat-for-mysql                                     sqlpro-for-mysql

3. Execute the installation command

% brew install [email protected]

==> Fetching dependencies for [email protected]: ca-certificates, openssl@3, libevent, lz4, [email protected], abseil, jsoncpp and protobuf

==> Installing dependencies for [email protected]: ca-certificates, openssl@3, libevent, lz4, [email protected], abseil, jsoncpp and protobuf

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

[email protected] is keg-only, which means it was not symlinked into /opt/homebrew,
because this is an alternate version of another formula.

If you need to have [email protected] first in your PATH, run:
  echo 'export PATH="/opt/homebrew/opt/[email protected]/bin:$PATH"' >> ~/.zshrc

For compilers to find [email protected] you may need to set:
  export LDFLAGS="-L/opt/homebrew/opt/[email protected]/lib"
  export CPPFLAGS="-I/opt/homebrew/opt/[email protected]/include"

To start [email protected] now and restart at login:
  brew services start [email protected]
Or, if you don't want/need a background service you can just run:
  /opt/homebrew/opt/[email protected]/bin/mysqld_safe --datadir\=/opt/homebrew/var/mysql

4. Boot up

% brew services start [email protected]
==> Successfully started `[email protected]` (label: [email protected])

5. Service Status Query

% brew services list           

Name      Status  User          File
[email protected] started tanghonggang1 ~/Library/LaunchAgents/[email protected]

6. Initial configuration

~ 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: N
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) : 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.

Disallow root login remotely? (Press y|Y for Yes, any other key for No) : N

 ... 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) : N

 ... skipping.
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! 

If the error is reported zsh: command not found: mysql_secure_installation. implement

echo 'export PATH="/opt/homebrew/opt/[email protected]/bin:$PATH"' >> ~/.zshrc

7. Login test

7.1 Terminal login

~ mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.43 Homebrew

Copyright (c) 2000, 2023, Oracle and/or its affiliates.

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> 

7.2 Client login

reference

Homebrew installation of MySQL 5.7 - MacOS
macOS brew installs mysql and installs problem solving about zsh: command not found: mysql problem solving