- On Linux, use `sudo systemctl status mysql` or `sudo service mysql status`.
- On Windows, use `services.msc` and look for MySQL service status.
- Use `netstat -tuln | grep 3306` on Linux.
- On Windows, use `netstat -an | find "3306"`.
- Typically found in `/var/log/mysql/error.log` on Linux.
- On Windows, check the MySQL installation directory, often within `ProgramData\MySQL\MySQL Server X.Y\data`.
- `mysql -u username -p -h localhost`
- For Linux, use `sudo ufw status` to see if the port is allowed, or `sudo iptables -L` to check firewall rules.
- On Windows, check the Firewall settings in Control Panel.
- Connect to MySQL and run `SELECT host, user FROM mysql.user WHERE user = 'your_username';`
- Connect to MySQL and run `SHOW VARIABLES LIKE "max_connections";`
- On Linux, use `top` or `htop` to monitor real-time usage.
- On Windows, use Task Manager.
- On Linux, use `df -h`.
- On Windows, check in File Explorer or use `chkdsk`.
- Run `SELECT host FROM informationschema.processlist WHERE user='yourusername';` to see where connections are coming from.
These actions can help identify and potentially resolve the connection issue with the MySQL database.
(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)