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

System structure errors may occur when reinstalling the database. At this time, just delete all the files under mysql and initialize a new system table structure.

/ usr/local/mysql/scripts/mysql_install_db-basedir=/usr/local/mysql-datadir=/var/lib/mysql-user=mysql

Erroneous deletion of pid files during backup can be regenerated by initializing the database

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