Final answer:
To view all MySQL server variables and their values, you can use the 'SHOW VARIABLES' command in the MySQL command line interface.
Step-by-step explanation:
To view all MySQL server variables and their values, you can use the 'SHOW VARIABLES' command in the MySQL command line interface. This command will display a list of all the variables and their corresponding values.
For example, if you run 'SHOW VARIABLES;' in the MySQL command line interface, you will see a list of variables such as 'max_connections', 'innodb_buffer_pool_size', and 'query_cache_size', along with their current values.
Editing the MySQL configuration file can also modify server variables, but it's not the recommended method for viewing them. A MySQL diagnostic tool can provide more detailed information about the server, but it's not necessary to view all variables and their values. Checking the MySQL website is also not required, as the 'SHOW VARIABLES' command provides the necessary information.