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  1. Percona Server for MySQL
  2. PS-6881

Documented that mysql 8.0 does not require mysql_upgrade.


    • Bug
    • Status: Done
    • Medium
    • Resolution: Fixed
    • None
    • 8.0.19-10
    • Documentation
    • None


      https://www.percona.com/doc/percona-server/8.0/upgrading_guide.html mentions running mysql_upgrade but it's not necessary anymore:


      [[email protected] ~]# mysql_upgrade -u root -psekret
      mysql_upgrade: [Warning] Using a password on the command line interface can be insecure.
      The mysql_upgrade client is now deprecated. The actions executed by the upgrade client are now done by the server.
      To upgrade, please start the new MySQL binary with the older data directory. Repairing user tables is done automatically. Restart is not required after upgrade.
      The upgrade process automatically starts on running a new MySQL binary with an older data directory. To avoid accidental upgrades, please use the --upgrade=NONE option with the MySQL binary. The option --upgrade=FORCE is also provided to run the server upgrade sequence on demand.
      It may be possible that the server upgrade fails due to a number of reasons. In that case, the upgrade sequence will run again during the next MySQL server start. If the server upgrade fails repeatedly, the server can be started with the --upgrade=MINIMAL option to start the server without executing the upgrade sequence, thus allowing users to manually rectify the problem. 




            patrick.birch Patrick Birch
            marcelo.altmann Marcelo Altmann
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