本地计算机上的MySQL服务启动后停止。某些服务在未由其他服务或程序使用时将自动停止。

问题：

　　MySQL启动报错

　　

排查：

　　cmd中输入

mysqld --console

 　　显示

C:Usersasil>mysqld --console
2019-01-30T01:40:44.158771Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2019-01-30T01:40:44.158771Z 0 [Warning] 'NO_ZERO_DATE', 'NO_ZERO_IN_DATE' and 'ERROR_FOR_DIVISION_BY_ZERO' sql modes should be used with strict mode. They will be merged with strict mode in a future release.
2019-01-30T01:40:44.158771Z 0 [Warning] 'NO_AUTO_CREATE_USER' sql mode was not set.
2019-01-30T01:40:44.158771Z 0 [Note] --secure-file-priv is set to NULL. Operations related to importing and exporting data are disabled
2019-01-30T01:40:44.159766Z 0 [Note] mysqld (mysqld 5.7.20) starting as process 2104 ...
2019-01-30T01:40:44.173510Z 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-01-30T01:40:44.174506Z 0 [Note] InnoDB: Uses event mutexes
2019-01-30T01:40:44.174506Z 0 [Note] InnoDB: _mm_lfence() and _mm_sfence() are used for memory barrier
2019-01-30T01:40:44.175503Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3
2019-01-30T01:40:44.175503Z 0 [Note] InnoDB: Number of pools: 1
2019-01-30T01:40:44.176500Z 0 [Note] InnoDB: Not using CPU crc32 instructions
2019-01-30T01:40:44.193456Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2019-01-30T01:40:44.199441Z 0 [Note] InnoDB: Completed initialization of buffer pool
2019-01-30T01:40:44.241257Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2019-01-30T01:40:44.340299Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-01-30T01:40:44.343290Z 0 [Note] InnoDB: Setting file '.ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-01-30T01:40:44.366473Z 0 [Note] InnoDB: File '.ibtmp1' size is now 12 MB.
2019-01-30T01:40:44.433390Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2019-01-30T01:40:44.434387Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
2019-01-30T01:40:44.436381Z 0 [Note] InnoDB: Waiting for purge to start
2019-01-30T01:40:44.487667Z 0 [Note] InnoDB: 5.7.20 started; log sequence number 2682761
2019-01-30T01:40:44.488553Z 0 [Note] Plugin 'FEDERATED' is disabled.
2019-01-30T01:40:44.489552Z 0 [Note] InnoDB: Loading buffer pool(s) from D:DevelopSotfwaremysql-5.7.20-winx64dataib_buffer_pool
2019-01-30T01:40:44.498544Z 0 [ERROR] unknown variable 'long-slow-queries=D:DevelopSotfwaremysql-5.7.20-winx64slow-query.log'
2019-01-30T01:40:44.498544Z 0 [ERROR] Aborting

2019-01-30T01:40:44.499541Z 0 [Note] Binlog end
2019-01-30T01:40:44.499541Z 0 [Note] Shutting down plugin 'ngram'
2019-01-30T01:40:44.500539Z 0 [Note] Shutting down plugin 'partition'
2019-01-30T01:40:44.500539Z 0 [Note] Shutting down plugin 'BLACKHOLE'
2019-01-30T01:40:44.500539Z 0 [Note] Shutting down plugin 'ARCHIVE'
2019-01-30T01:40:44.501538Z 0 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2019-01-30T01:40:44.501538Z 0 [Note] Shutting down plugin 'MRG_MYISAM'
2019-01-30T01:40:44.502532Z 0 [Note] Shutting down plugin 'MyISAM'
2019-01-30T01:40:44.504527Z 0 [Note] Shutting down plugin 'INNODB_SYS_VIRTUAL'
2019-01-30T01:40:44.504527Z 0 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2019-01-30T01:40:44.504527Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2019-01-30T01:40:44.504527Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2019-01-30T01:40:44.504527Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2019-01-30T01:40:44.505524Z 0 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2019-01-30T01:40:44.505524Z 0 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2019-01-30T01:40:44.505524Z 0 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2019-01-30T01:40:44.505524Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2019-01-30T01:40:44.507520Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2019-01-30T01:40:44.507520Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2019-01-30T01:40:44.508517Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2019-01-30T01:40:44.508517Z 0 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2019-01-30T01:40:44.508517Z 0 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2019-01-30T01:40:44.508517Z 0 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2019-01-30T01:40:44.508517Z 0 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2019-01-30T01:40:44.509514Z 0 [Note] Shutting down plugin 'INNODB_METRICS'
2019-01-30T01:40:44.509514Z 0 [Note] Shutting down plugin 'INNODB_TEMP_TABLE_INFO'
2019-01-30T01:40:44.509514Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2019-01-30T01:40:44.509514Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2019-01-30T01:40:44.509514Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2019-01-30T01:40:44.510512Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2019-01-30T01:40:44.510512Z 0 [Note] InnoDB: Buffer pool(s) load completed at 190130  9:40:44
2019-01-30T01:40:44.510512Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2019-01-30T01:40:44.510512Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2019-01-30T01:40:44.510512Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM'
2019-01-30T01:40:44.511509Z 0 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2019-01-30T01:40:44.511509Z 0 [Note] Shutting down plugin 'INNODB_CMP'
2019-01-30T01:40:44.511509Z 0 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2019-01-30T01:40:44.511509Z 0 [Note] Shutting down plugin 'INNODB_LOCKS'
2019-01-30T01:40:44.511509Z 0 [Note] Shutting down plugin 'INNODB_TRX'
2019-01-30T01:40:44.512509Z 0 [Note] Shutting down plugin 'InnoDB'
2019-01-30T01:40:44.512509Z 0 [Note] InnoDB: FTS optimize thread exiting.
2019-01-30T01:40:44.512509Z 0 [Note] InnoDB: Starting shutdown...
2019-01-30T01:40:44.613877Z 0 [Note] InnoDB: Dumping buffer pool(s) to D:DevelopSotfwaremysql-5.7.20-winx64dataib_buffer_pool
2019-01-30T01:40:44.618864Z 0 [Note] InnoDB: Buffer pool(s) dump completed at 190130  9:40:44
2019-01-30T01:40:45.930503Z 0 [Note] InnoDB: Shutdown completed; log sequence number 2682780
2019-01-30T01:40:45.931501Z 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-01-30T01:40:45.932497Z 0 [Note] Shutting down plugin 'MEMORY'
2019-01-30T01:40:45.932497Z 0 [Note] Shutting down plugin 'CSV'
2019-01-30T01:40:45.932497Z 0 [Note] Shutting down plugin 'sha256_password'
2019-01-30T01:40:45.933614Z 0 [Note] Shutting down plugin 'mysql_native_password'
2019-01-30T01:40:45.933614Z 0 [Note] Shutting down plugin 'binlog'
2019-01-30T01:40:45.934597Z 0 [Note] mysqld: Shutdown complete

注意报错：[ERROR] unknown variable 'long-slow-queries=D:DevelopSotfwaremysql-5.7.20-winx64slow-query.log'，之前学习MySQL优化留下的坑，MySQL重启起不来了。

解决方案：

　　注释或者删除掉，再次重启即可

参考：

　　mysql5.7 本地计算机上的mysql 服务启动后停止 的问题解决