问题
I have downloaded mysql ZIP from here https://dev.mysql.com/downloads/file/?id=467269
Then extracted it, renamed my-default.ini to my.ini, set
basedir = D:\Apps\MySQL\mysql-5.7.17-winx64
datadir = D:\Apps\MySQL\data5717
then started
mysqld --console
under admin privileges. All was described here: http://dev.mysql.com/doc/refman/5.7/en/windows-install-archive.html
Unfortunately it prints the following in console:
[ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
and doesn't work.
回答1:
You probably misunderstood/skipped point 4 in your list, Initialize MySQL. It means to either copy an existing data directory there or to create a new one, see Initializing the Data Directory Manually Using mysqld .
To initialize a fresh data directory, you basically (after setting your config file) just have to run either
bin\mysqld --initialize
or
bin\mysqld --initialize-insecure
The latter will set an empty root password.
回答2:
If you set datadir to some other location than basedir, like we do, then you have to COPY, not move, the basedir databases there too. Apparently mysqld looks for some of it's own stuff in the wrong place. After the copy you have to change the owner and group of everything you copied to mysql.
sudo cp -R /usr/local/mysql/data/* /your/own/data/place sudo chown -R mysql:mysql /your/own/data/place
BTW you can't just change the basedir to match the new datadir after the copy.
来源：https://stackoverflow.com/questions/41531225/cant-open-the-mysql-plugin-table-please-run-mysql-upgrade-to-create-it