1.背景
(base) lcc@lcc MySQLTuner-perl$ ./mysqltuner.pl --socket /var/lib/mysql/mysql.sock
>> MySQLTuner 1.7.19 - Major Hayden <major@mhtx.net>
>> Bug reports, feature requests, and downloads at http://mysqltuner.com/
>> Run with '--help' for additional options and output filtering
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