Quote: refer to the original poster 4 color response:

this problem a while ago, has been not solve, as long as the whole library is deleted, and then initializes the database, and then a restart again like today,
Don't know where the problem

 
The 2020-08-06 T15:26:05. 427648 z 0 [Note] InnoDB: Completed initialization of buffer pool 
The 2020-08-06 T15:26:05. 446744 z 0 [ERROR] InnoDB: The innodb_system data file 'ibdata1' must be writable 
The 2020-08-06 T15:26:05. 447132 z 0 [ERROR] InnoDB: The innodb_system data file 'ibdata1' must be writable 
The 2020-08-06 T15:26:05. 448066 z 0 [ERROR] InnoDB: Plugin initialization aborted with ERROR Generic ERROR 
The 2020-08-06 T15:26:05. 651754 z 0 [ERROR] Plugin 'InnoDB init function returned ERROR. 
The 2020-08-06 T15:26:05. 652184 z 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 
The 2020-08-06 T15:26:05. 653594 z 0 [ERROR] Failed to initialize builtin plugins. 
The 2020-08-06 T15:26:05. 655147 z 0 [ERROR] Aborting 

The 2020-08-06 T15:26:05. 655589 z 0 [Note] Binlog end 
The 2020-08-06 T15:26:05. 656485 z 0 [Note] Shutting down the plugin 'CSV' 
The 2020-08-06 T15:26:05. 657517 z 0 [Note] mysqld: Shutdown complete 

Look at the data directory permissions, mysql user whether some permissions,