[ERROR] InnoDB: ibdata1 different size (rounded down to MB)

啟動mysql例項報錯，檢視 error log

## 錯誤資訊
2018-08-31T10:38:36.945081Z 0 [ERROR] InnoDB: The Auto-extending innodb_system data file './ibdata1' is of a different size 768 pages (rounded down to MB) than specified in the .cnf file: initial 1536 pages, max 0 (relevant if non-zero) pages!

解決過程：

768/64=12

檢視 my.cnf 檔案 將
innodb_data_file_path = ibdata1:24M:autoextend

改為

innodb_data_file_path = ibdata1:12M:autoextend

再次啟動成功！