[Solved] Centons7 docker:mysql:5.7 [ERROR] InnoDB: Unable to lock ./ibdata1 error: 11

An error occurred:

[ERROR] InnoDB: Unable to lock ./ibdata1 error: 11
[Note] InnoDB: Check that you do not already have another mysqld process using the same InnoDB data or log files.

Solution:
enter the MySQL folder

    backup files ibdata1, IB_logfile0, ib_logfile1; Remove the above three files; Restart docker: MySQL

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