MySQL 5.6 升级为5.7(CentOS在线版)

To upgrade MySQL 5.6 to 5.7 on CentOS, you can follow these general steps:

• Backup your MySQL 5.6 data and configurations. This is important in case something goes wrong during the upgrade process.

• Remove the current MySQL 5.6 installation. This can be done using the following command:

sudo yum remove mysql-server mysql-client

• Add the MySQL 5.7 repository to your system. You can do this by creating a file called mysql57.repo in the /etc/yum.repos.d/ directory and adding the following content:

[mysql57-community]
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

• Install MySQL 5.7 using the following command:

sudo yum install mysql-server mysql-client

• Once the installation is complete, start the MySQL service using the following command:

sudo systemctl start mysqld

-Check the status of the MySQL service to make sure it is running using the following command:

sudo systemctl status mysqld

• Upgrade the MySQL data files using the following command:

sudo mysql_upgrade

• Restart the MySQL service using the following command:

sudo systemctl restart mysqld

• Verify that the upgrade was successful by checking the MySQL version using the following command:

mysql -V

That's it! Your CentOS system should now be running MySQL 5.7.

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