About the problem of installing mysql my.cnf on linux
Environment: centos 6.5 32-bit
When mysql is not installed, my.cnf already exists in the /etc/ directory. What is this and what does it do? (The following is a screenshot of my local Linux)
After installing mysql, follow the online tutorial to execute the following code on mysql:
<code>cp support-files/my-medium.cnf /etc/my.cnf</code>
Isn’t the operation to overwrite the my.cnf of mysql with the my.cnf in the system? Why is this done? It is a my.cnf prepared by Linux for mysql. If the my.cnf file of mysql is not placed under /etc, where else can it be placed? Does not affect the use of mysql
Reply content:
Environment: centos 6.5 32-bit
When mysql is not installed, my.cnf already exists in the /etc/ directory. What is this and what does it do? (The following is a screenshot of my local Linux)
After installing mysql, follow the online tutorial to execute the following code on mysql:
<code>cp support-files/my-medium.cnf /etc/my.cnf</code>
Isn’t the operation to overwrite the my.cnf of mysql with the my.cnf in the system? Why is this done? It is a my.cnf prepared by Linux for mysql. If the my.cnf file of mysql is not placed under /etc, where else can it be placed? Does not affect the use of mysql
Did you choose to install the Mysql component when installing Centos?
Remove the mysql database installed by yum
<code>yum remove mysql -y</code>
my.cnf is the configuration file loaded when mysql starts. The path of my.cnf can be configured by cmake when installing mysql./
-DSYSCONFDIR=/etc #my.cnf path
The value of -DSYSCONFDIR=/etc in the configuration can be defined by yourself

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











In MySQL, add fields using ALTERTABLEtable_nameADDCOLUMNnew_columnVARCHAR(255)AFTERexisting_column, delete fields using ALTERTABLEtable_nameDROPCOLUMNcolumn_to_drop. When adding fields, you need to specify a location to optimize query performance and data structure; before deleting fields, you need to confirm that the operation is irreversible; modifying table structure using online DDL, backup data, test environment, and low-load time periods is performance optimization and best practice.

session_start()iscrucialinPHPformanagingusersessions.1)Itinitiatesanewsessionifnoneexists,2)resumesanexistingsession,and3)setsasessioncookieforcontinuityacrossrequests,enablingapplicationslikeuserauthenticationandpersonalizedcontent.

To safely and thoroughly uninstall MySQL and clean all residual files, follow the following steps: 1. Stop MySQL service; 2. Uninstall MySQL packages; 3. Clean configuration files and data directories; 4. Verify that the uninstallation is thorough.

macOS and Linux have their own advantages in compatibility and user experience. macOS has excellent compatibility within the Apple ecosystem, and the user experience is simple and intuitive; Linux has outstanding hardware compatibility and software flexibility. The user experience varies from distribution to distribution, emphasizing personalization and control.

Efficient methods for batch inserting data in MySQL include: 1. Using INSERTINTO...VALUES syntax, 2. Using LOADDATAINFILE command, 3. Using transaction processing, 4. Adjust batch size, 5. Disable indexing, 6. Using INSERTIGNORE or INSERT...ONDUPLICATEKEYUPDATE, these methods can significantly improve database operation efficiency.

MySQL functions can be used for data processing and calculation. 1. Basic usage includes string processing, date calculation and mathematical operations. 2. Advanced usage involves combining multiple functions to implement complex operations. 3. Performance optimization requires avoiding the use of functions in the WHERE clause and using GROUPBY and temporary tables.

Installing MySQL on macOS can be achieved through the following steps: 1. Install Homebrew, using the command /bin/bash-c"$(curl-fsSLhttps://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)". 2. Update Homebrew and use brewupdate. 3. Install MySQL and use brewinstallmysql. 4. Start MySQL service and use brewservicesstartmysql. After installation, you can use mysql-u

Methods for configuring character sets and collations in MySQL include: 1. Setting the character sets and collations at the server level: SETNAMES'utf8'; SETCHARACTERSETutf8; SETCOLLATION_CONNECTION='utf8_general_ci'; 2. Create a database that uses specific character sets and collations: CREATEDATABASEexample_dbCHARACTERSETutf8COLLATEutf8_general_ci; 3. Specify character sets and collations when creating a table: CREATETABLEexample_table(idINT
