MySQL enterprise parameter tuning practice sharing

One 、 preface

MySQL Many parameters are provided for us to adjust to maximize its performance , In this paper, the production database instance is used to configure , Understand the thinking behind parameter configuration , Finally, an optimized configuration will be provided , Can be adjusted on its basis .

Two 、 Parameter description

symbolic-links=0

prohibit MySQL Using a soft connection , In fact, this is due to the consideration of database reinforcement , Using a soft connection , Especially with root function mysqld when , An attacker will be able to obtain... From the database root jurisdiction , Because the data is stored in the system partition at the same time , This will allow an attacker to modify any file in the system partition ; When using mysql Command to modify the database corresponding to the soft connection , The actual files stored in the system partition will be modified , Other files in the system may be deleted and renamed ,MySQL8 The default is to prohibit .

lower_case_table_names=1

This parameter is used to set case sensitivity , There are three values ,
0： The storage and comparison of table names are case sensitive ;
1： The table name stored on the disk is lowercase , The comparison is case insensitive ;
2： Table names are case sensitive , But the comparison is in lowercase .linux The default is 0,window The default is 1.

skip-name-resolve
prohibit DNS analysis ,MySQL The client will be checked during user login IP Conduct DNS The check , No matter it's used IP Login or domain name login , The process of counter checking is all in . the