your text
https://the7sign.github.io/server/2019/04/10/mysqld-multi-installation.html
i was saw that text, following. but can’t solve that problem.
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my.cnf index
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and /etc/my.cnf.d/mysql-clients.cnf
how to install mysql_multi and setting mysql_multi?
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Please post code, data, and results as text, not screenshots (how to format code in posts). Why should I not upload images of code/data/errors? idownvotedbecau.se/imageofcode
Your question is not very clear, but questions about configuring databases belong on Database Administrators.
Your first link is to a page that isn’t in English.