mysqld, also known as MySQL Server, is the main program that does most of the work in a MySQL installation.
mysqld, is MySQL server daemon program which runs quietly in background on MySQL Database Server.
MySQL Server manages access to the MySQL data directory that contains databases and tables. The data directory is also the default location for other information such as log files and status files.
When MySQL server starts, it listens for network connections from client programs and manages access to databases on behalf of those clients.
The mysqld program has many options that can be specified at startup. For a complete list of options, run this command:
mysqld –verbose –help
MySQL Server also has a set of system variables that affect its operation as it runs.
System variables can be set at server startup, and many of them can be changed at runtime to effect dynamic server reconfiguration.
MySQL Server also has a set of status variables that provide information about its operation.
You can monitor these status variables to access runtime performance characteristics.
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- 4590% of the time, this error is due either to the MySQL Server not running, or else firewall configuration on the Windows server blocking access on port 3306 (or whatever port your MySQL instance is configured to use). Error: 2003 (CR_CONN_HOST_ERROR) Message: Can't connect to MySQL server on '%s' (%d)
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