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Follow the installation steps on the official website： By the way, the OS is centos 7.

How to keep old data files when upgrading?

8

I want to know, when I package a new exe installation package version, I need to upgrade the software, but the previously installed version has some data needed by the...

Access denied for user 'root'@'localhost' (using password: YES)

1

I want to log in to mysql, according to the default user name and password given by the official website, but the login failed, "Access denied for user 'root'@'localhost' (using...