HomebrewでインストールしたMySQLを自動起動設定する

之だけで済むようです

$ brew services start mysql

==> Tapping homebrew/services
Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-services'...
remote: Counting objects: 10, done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 10 (delta 0), reused 6 (delta 0), pack-reused 0
Unpacking objects: 100% (10/10), done.
Checking connectivity... done.
Tapped 0 formulae (26 files, 32.4K)
==> Successfully started `mysql` (label: homebrew.mxcl.mysql)