首先先粘贴出来我的错误信息，如下：
2019-07-16T00:53:18.285919Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.15) starting as process 18555 2019-07-16T00:53:18.506674Z 0 [ERROR] [MY-012681] [InnoDB] mmap(137428992 bytes) failed; errno 12 2019-07-16T00:53:18.506740Z 1 [ERROR] [MY-012956] [InnoDB] Cannot allocate memory for the buffer pool 2019-07-16T00:53:18.506757Z 1 [ERROR] [MY-012930] [InnoDB] Plugin initialization aborted with error Generic error. 2019-07-16T00:53:18.509371Z 1 [ERROR] [MY-010334] [Server] Failed to initialize DD Storage Engine 2019-07-16T00:53:18.510501Z 0 [ERROR] [MY-010020] [Server] Data Dictionary initialization failed. 2019-07-16T00:53:18.513074Z 0 [ERROR] [MY-010119] [Server] Aborting 2019-07-16T00:53:18.518947Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.15) MySQL Community Server - GPL.2019-07-16T00:53:18.285
