MySQL-Linux version installation
1. Prepare a Linux server
Cloud server or virtual machine can be;
The version of Linux is CentOS7;
2. Download the MySQL installation package for Linux
3. Upload the MySQL installation package
Use FinalShell software to upload!
4. Create a directory and unzip it
mkdir mysql
tar -xvf mysql-8.0.26-1.el7.x86_64.rpm-bundle.tar -C mysql
5. Install the mysql installation package
cd mysql
rpm -ivh mysql-community-common-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-plugins-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-8.0.26-1.el7.x86_64.rpm
yum install openssl-devel
rpm -ivh mysql-community-devel-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-icu-data-files-8.0.28-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-8.0.26-1.el7.x86_64.rpm
Possible problems: mariadb-libs is replaced by mysql-community-libs-8.0.25-1.el7.x8664
One command:
yum remove mysql-libssolve, just clear the previously installed dependencies
6. Start the MySQL service
systemctl start mysqld
systemctl restart mysqld
systemctl stop mysqld
7. Query the automatically generated root user password
grep 'temporary password' /var/log/mysqld.log
Command line execution instructions:
mysql -u root -p
Then enter the automatically generated password from the above query to complete the login
8. Modify root user password
After logging in to MySQL, you need to change the automatically generated password that is inconvenient to remember, and change it to a password that you are familiar with and easy to remember
ALTER USER USER() IDENTIFIED BY 'Admin2022!';
# 查看 mysql 初始的密码策略
SHOW VARIABLES LIKE 'validate_password%';
# 设置密码的验证强度等级
set global validate_password.policy = LOW;
# 设置密码规定的长度
set global validate_password.length = 4;
# 关闭检查用户名（此方式可设置用户名和密码一致）
set global validate_password.check_user_name = off;
ALTER USER 'root'@'localhost' IDENTIFIED BY 'root';
9. Create a user
The default root user can only access the current node localhost, and cannot access remotely. We also need to create a root account for remote access by users
create user 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'admin';
10. And assign permissions to the root user
grant all on *.* to 'root'@'%';
11. Reconnect to MySQL
mysql -u root -p
then enter the password
Note: If you can’t connect, please make sure that the Linux firewall is closed, or open the specified port
12. Connect to MySQL remotely through Navicat
13. Set the mysql service to start automatically at boot
Check whether the MySQL service starts automatically
systemctl list-unit-files | grep mysqld.service
enabled by default;
If it is not enabled, you can run the following command to set auto-start
systemctl enable mysqld.service # 打开开机自启动
systemctl disable mysqld.service # 关闭开机自启动