Which version of mysql should I download for CentOS?
Centos is the community release of redhat. The kernel is the same. Just choose the version corresponding to redhat.
Or choose linux-generic, the latter is universal.
MySQL is an open source relational database management system (RDBMS) that uses the most commonly used database management language - Structured Query Language (SQL) for database management.
MySQL features
1. Written in C and C, and tested using a variety of compilers to ensure the portability of the source code
2. Supports multiple operating systems, such as Linux, Windows, AIX, FreeBSD, HP-UX, MacOS, NovellNetware, OpenBSD, OS/2 Wrap, Solaris, etc. (Recommended learning: MySQL Video Tutorial)
3. Provides APIs for multiple programming languages, such as C, C, Python, Java, Perl, PHP, Eiffel, Ruby, etc.
4. Supports multi-threading and makes full use of CPU resources
5. Optimized SQL query algorithm, effectively improving query speed
6. Provide multi-language support, common encodings such as GB2312, BIG5, UTF8
7. Provide TCP /IP, ODBC and JDBC and other database connection methods
8. MySQL software adopts a dual authorization policy. It is divided into community version and commercial version. Due to its small size, fast speed and low total cost of ownership, Especially with the characteristics of open source, MySQL is generally chosen as the website database for the development of small and medium-sized websites
9. MySQL uses the standard SQL data language form
10. Mysql can be customized. Adopting the GPL protocol, you can modify the source code to develop your own Mysql system
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Alternatives to CentOS include UbuntuServer, Debian, Fedora, RockyLinux, and AlmaLinux. 1) UbuntuServer is suitable for basic operations, such as updating software packages and configuring the network. 2) Debian is suitable for advanced usage, such as using LXC to manage containers. 3) RockyLinux can optimize performance by adjusting kernel parameters.

The CentOS shutdown command is shutdown, and the syntax is shutdown [Options] Time [Information]. Options include: -h Stop the system immediately; -P Turn off the power after shutdown; -r restart; -t Waiting time. Times can be specified as immediate (now), minutes ( minutes), or a specific time (hh:mm). Added information can be displayed in system messages.

The key differences between CentOS and Ubuntu are: origin (CentOS originates from Red Hat, for enterprises; Ubuntu originates from Debian, for individuals), package management (CentOS uses yum, focusing on stability; Ubuntu uses apt, for high update frequency), support cycle (CentOS provides 10 years of support, Ubuntu provides 5 years of LTS support), community support (CentOS focuses on stability, Ubuntu provides a wide range of tutorials and documents), uses (CentOS is biased towards servers, Ubuntu is suitable for servers and desktops), other differences include installation simplicity (CentOS is thin)

Steps to configure IP address in CentOS: View the current network configuration: ip addr Edit the network configuration file: sudo vi /etc/sysconfig/network-scripts/ifcfg-eth0 Change IP address: Edit IPADDR= Line changes the subnet mask and gateway (optional): Edit NETMASK= and GATEWAY= Lines Restart the network service: sudo systemctl restart network verification IP address: ip addr

CentOS installation steps: Download the ISO image and burn bootable media; boot and select the installation source; select the language and keyboard layout; configure the network; partition the hard disk; set the system clock; create the root user; select the software package; start the installation; restart and boot from the hard disk after the installation is completed.

The command to restart the SSH service is: systemctl restart sshd. Detailed steps: 1. Access the terminal and connect to the server; 2. Enter the command: systemctl restart sshd; 3. Verify the service status: systemctl status sshd.

Restarting the network in CentOS 8 requires the following steps: Stop the network service (NetworkManager) and reload the network module (r8169), start the network service (NetworkManager) and check the network status (by ping 8.8.8.8)

Reboot command is available to restart CentOS 7. The steps are as follows: Open the terminal window and enter the reboot command. Confirm the restart prompt. The system will restart and the boot menu will appear during this period. After the restart is complete, log in with the credentials.


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