Shulou(Shulou.com)06/01 Report--

Question 1:

Resolve:

There is a pre-upgrade version in the PATH environment. You can change the PATH variable.

Note:

When a soft connection is deleted, rm-rf mysql instead of rm-rf mysql/, will delete the original file

Question 2:

5.6L 5.7L, enable binlog parameters without server_id,5.6, 5.7No, 5.7start with mysqld as far as possible, start with mysqld_safe without error

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