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Fixing MySQL Connection Issues on macOS Sequoia 15.0 After Upgrading to MySQL 9
If you’ve recently upgraded to macOS Sequoia 15.0 and encountered issues with MySQL not connecting, you’re not alone! MySQL 9 introduces architectural changes that can disrupt connections, especially when upgrading directly from older MySQL versions. After some troubleshooting, I found a solution that resolved my issues quickly, and I hope it helps you, too.
Problem: MySQL Not Running After Upgrade
When trying to connect, you might see an error like this:
ERROR 2002 (HY000): Can't connect to local server through socket '/tmp/mysql.sock' (2)
The core issue often arises from direct upgrades from pre-8.4 MySQL versions, as compatibility steps may be bypassed. To fix this, follow these steps:
Solution: Downgrade and Re-upgrade to Smooth Out Compatibility
- Stop MySQL 9.x
First, stop any running MySQL 9.x service:
brew services stop mysql
- Install MySQL 8.4
Downgrade temporarily to MySQL 8.4:
brew install [email protected]
- Start and Stop MySQL 8.4
Start and stop MySQL 8.4 to handle database migrations and prep the system:
brew services start [email protected]
brew services stop [email protected]
- Restart MySQL 9.x
With the migrations done, start MySQL 9.x:
brew services start mysql
- Clean Up
Finally, remove MySQL 8.4 since it’s no longer needed:
brew remove [email protected]
Following these steps resolved the connection issues I faced on macOS Sequoia 15.0. If you’re experiencing similar issues, give it a try and get back to coding!
This streamlined guide should help others on similar paths!
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