This error log may be under your system’s log directory (/var/log/mysql) or under the mysql data folder (usually /usr/local/mysql/data). In my case the error log listed the following items: Inno DB: No valid checkpoint found.Inno DB: If this error appears when you are creating an Inno DB database, Inno DB: the problem may be that during an earlier attempt you managed Inno DB: to create the Inno DB data files, but log file creation failed.Running it directly within the /scripts directory does not give it enough context for it to run.resulted in the error: "The server quit without updating PID file" I noticed something odd in the installation instructions though.It has ownership changed to mysql for the directory "data", but not to "var"; this is unusual because for years I have had to ensure that var directory was mysql writable.So I manually ran and then attempted to start it again. But worse, no file in the var dir - it was in the "data" dir!
It runs all of your website's databases, WHM/Cpanel control panel databases etc. There could be many reasons behind the failure of the service.
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In this article, we have listed the most common fixes which work on most cases.
If you are getting this error when you try to start mysql server, mysql is having a problem with one of the variables that you have in its configuration file