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Why does MySQL not know where my database is?
The output will list all files in that directory, it should contain at least the following plus any databases you have created. If the data directory or socket has been moved and MySQL doesn’t know where they are, fix the configuration file to point to the correct directories. You can search for the folders with the following command.
What should I do if MySQL database is not running?
Should the database service restart without encountering errors, you can try to connect to it using the command below. Enter the root password when prompted. If you are greeted with “Welcome to the MySQL/MariaDB monitor” the connection was successful and the database service is running.
How to troubleshoot a slow query in MySQL?
. . . . . . These commented-out directives provide MySQL’s default configuration options for the slow query log. Specifically, here’s what each of them do: slow-query-log: Setting this to 1 enables the slow query log. slow-query-log-file: This defines the file where MySQL will log any slow queries.
How to troubleshoot issues in MySQL 8 +?
Note: If you’re running MySQL 8+, these commented lines will not be in the mysqld.cnf file by default. In this case, add the following lines to the bottom of the file: After enabling the slow query log, save and close the file. Then restart the MySQL service:
What to do when MySQL is having problems?
If you are having difficulties finding anything helpful, try different keywords such as ‘start’ to see when the service was last restarted, or ‘failed’ to find any less critical problems that might not be reported as errors.
Where are MySQL error logs stored in Debian?
Debian and Ubuntu servers store error logs to /var/log/mysql/error.log. You can read through the logs with ‘less’, but this might not be very convenient as the log includes more than just critical errors. Instead, search the logs using ‘grep’. Should you not be able to find anything within the most recent logs, check the archived ones as well.
Why is MySQL not listening to my website?
If your website cannot connect to your database, it is possible the service is simply not listening. Check your MySQL state, on Ubuntu and Debian systems this can be done with the following command. sudo service mysql status CentOS and other Red Hat variants use MySQL as well, but it is named MariaDB instead, so use this command instead.