MySQL Error Server PID File Could Not Be Found Solution
In this article, we will study about the Error! Error Server PID File Could Not Be Found! in MySQL and its solution with full explanation.
MySQL PID file
The file that contains the process identification number or process ID of a running MySQL instance is called the MySQL PID file. Whenever we use the mysql.server command, MySQL uses the PID file to find the process ID.
The MySQL server automatically generates a PID file whenever the server is started. The MySQL server finds the process ID from the PID file to stop the correct MySQL process.
If the MySQL PID file does not exist, the server displays ERROR! Unable to find MySQL server PID file! .
Fix MySQL Error! Cannot find MySQL server PID file! in Linux
We can face the error! MySQL server PID file not found! error occurs if the MySQL process exits or is killed abruptly. We can fix this error using the following steps.
-
Check the path to the PID file in the MySQL configuration file located at /etc/mysql/my.cnf or /etc/mysql/mysql.conf.d/mysqld.cnf.
If the pid file parameter is not set in the configuration file, set the pid file path by adding the following line.
pid-file = /var/run/mysqld/mysqld.pid -
Create the following directory and set the permissions as follows.
mkdir /var/run/mysqld touch /var/run/mysqld/mysqld.pid chown -R mysql:mysql /var/run/mysqld -
Use the following commands to change ownership of the MySQL directory and set permissions.
sudo chown -R _mysql:_mysql mysql sudo chmod 777 /usr/local/var/mysql
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