Why Does My Mac OS X MySQL Server Quit Without Updating the PID File?

MySQL Startup Error: "The Server Quit Without Updating PID File" on Mac OS X

When starting MySQL on Mac OS X v10.6 (Snow Leopard), users may encounter the error:

The server quit without updating PID file

This issue often stems from permission problems. Here's how to address it:

Check for Running MySQL Instances

First, verify if any MySQL instance is currently running:

ps -ef | grep mysql

If an instance is found, terminate it:

kill -9 PID

where PID is the process ID from the previous command.

Adjust Directory Permissions

Next, inspect the ownership of the /usr/local/var/mysql/ directory:

ls -laF /usr/local/var/mysql/

If it's owned by root, change it to 'mysql' or your desired user:

sudo chown -R mysql /usr/local/var/mysql/

Additional Troubleshooting

If you're experiencing further issues, locate the log file with a ".err" suffix. It may provide more insights into the problem. The file's typical location is:

/usr/local/var/mysql/your_computer_name.local.err

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