問題描述：
服務器磁盤空間快滿了，清理了下磁盤空間刪除mysql-slow.log和tmp目錄下的文件后，mysql服務突然無法啟動了
問題排查：
查看mysql啟動錯誤日志如下
2025-02-08T07:12:54.272540Z 0 [Note] Binlog end
2025-02-08T07:12:54.272770Z 0 [Note] Shutting down plugin ＇ngram＇
2025-02-08T07:12:54.272781Z 0 [Note] Shutting down plugin ＇partition＇
2025-02-08T07:12:54.272784Z 0 [Note] Shutting down plugin ＇BLACKHOLE＇
2025-02-08T07:12:54.272788Z 0 [Note] Shutting down plugin ＇ARCHIVE＇
2025-02-08T07:12:54.272790Z 0 [Note] Shutting down plugin ＇PERFORMANCE_SCHEMA＇
2025-02-08T07:12:54.272829Z 0 [Note] Shutting down plugin ＇MRG_MYISAM＇
2025-02-08T07:12:54.272832Z 0 [Note] Shutting down plugin ＇MyISAM＇
2025-02-08T07:12:54.272843Z 0 [Note] Shutting down plugin ＇INNODB_SYS_VIRTUAL＇
2025-02-08T07:12:54.272846Z 0 [Note] Shutting down plugin ＇INNODB_SYS_DATAFILES＇
2025-02-08T07:12:54.272849Z 0 [Note] Shutting down plugin ＇INNODB_SYS_TABLESPACES＇
2025-02-08T07:12:54.272852Z 0 [Note] Shutting down plugin ＇INNODB_SYS_FOREIGN_COLS＇
2025-02-08T07:12:54.272855Z 0 [Note] Shutting down plugin ＇INNODB_SYS_FOREIGN＇
2025-02-08T07:12:54.272857Z 0 [Note] Shutting down plugin ＇INNODB_SYS_FIELDS＇
2025-02-08T07:12:54.272860Z 0 [Note] Shutting down plugin ＇INNODB_SYS_COLUMNS＇
2025-02-08T07:12:54.272870Z 0 [Note] Shutting down plugin ＇INNODB_SYS_INDEXES＇
2025-02-08T07:12:54.272873Z 0 [Note] Shutting down plugin ＇INNODB_SYS_TABLESTATS＇
2025-02-08T07:12:54.272875Z 0 [Note] Shutting down plugin ＇INNODB_SYS_TABLES＇
2025-02-08T07:12:54.272878Z 0 [Note] Shutting down plugin ＇INNODB_FT_INDEX_TABLE＇
2025-02-08T07:12:54.272881Z 0 [Note] Shutting down plugin ＇INNODB_FT_INDEX_CACHE＇
2025-02-08T07:12:54.272883Z 0 [Note] Shutting down plugin ＇INNODB_FT_CONFIG＇
2025-02-08T07:12:54.272886Z 0 [Note] Shutting down plugin ＇INNODB_FT_BEING_DELETED＇
2025-02-08T07:12:54.272889Z 0 [Note] Shutting down plugin ＇INNODB_FT_DELETED＇
2025-02-08T07:12:54.272891Z 0 [Note] Shutting down plugin ＇INNODB_FT_default_STOPWORD＇
2025-02-08T07:12:54.272894Z 0 [Note] Shutting down plugin ＇INNODB_METRICS＇
2025-02-08T07:12:54.272896Z 0 [Note] Shutting down plugin ＇INNODB_TEMP_TABLE_INFO＇
2025-02-08T07:12:54.272899Z 0 [Note] Shutting down plugin ＇INNODB_BUFFER_POOL_STATS＇
2025-02-08T07:12:54.272902Z 0 [Note] Shutting down plugin ＇INNODB_BUFFER_PAGE_LRU＇
2025-02-08T07:12:54.272904Z 0 [Note] Shutting down plugin ＇INNODB_BUFFER_PAGE＇
2025-02-08T07:12:54.272907Z 0 [Note] Shutting down plugin ＇INNODB_CMP_PER_INDEX_RESET＇
2025-02-08T07:12:54.272910Z 0 [Note] Shutting down plugin ＇INNODB_CMP_PER_INDEX＇
2025-02-08T07:12:54.272912Z 0 [Note] Shutting down plugin ＇INNODB_CMPMEM_RESET＇
2025-02-08T07:12:54.272915Z 0 [Note] Shutting down plugin ＇INNODB_CMPMEM＇
2025-02-08T07:12:54.272917Z 0 [Note] Shutting down plugin ＇INNODB_CMP_RESET＇
2025-02-08T07:12:54.272920Z 0 [Note] Shutting down plugin ＇INNODB_CMP＇
2025-02-08T07:12:54.272923Z 0 [Note] Shutting down plugin ＇INNODB_LOCK_WAITS＇
2025-02-08T07:12:54.272925Z 0 [Note] Shutting down plugin ＇INNODB_LOCKS＇
2025-02-08T07:12:54.272928Z 0 [Note] Shutting down plugin ＇INNODB_TRX＇
2025-02-08T07:12:54.272931Z 0 [Note] Shutting down plugin ＇InnoDB＇
2025-02-08T07:12:54.272974Z 0 [Note] InnoDB: FTS optimize thread exiting.
2025-02-08T07:12:54.273025Z 0 [Note] InnoDB: Starting shutdown…
2025-02-08T07:12:54.373128Z 0 [Note] InnoDB: Dumping buffer pool(s) to /www/server/data/ib_buffer_pool
2025-02-08T07:12:54.373405Z 0 [Note] InnoDB: Buffer pool(s) dump completed at 240430 15:12:54
2025-02-08T07:12:55.904370Z 0 [Note] InnoDB: Shutdown completed; log sequence number 56328243996
2025-02-08T07:12:55.906446Z 0 [Note] InnoDB: Removed temporary tablespace data file: ＂ibtmp1＂
2025-02-08T07:12:55.906458Z 0 [Note] Shutting down plugin ＇MEMORY＇
2025-02-08T07:12:55.906464Z 0 [Note] Shutting down plugin ＇CSV＇
2025-02-08T07:12:55.906468Z 0 [Note] Shutting down plugin ＇sha256_password＇
2025-02-08T07:12:55.906471Z 0 [Note] Shutting down plugin ＇mysql_native_password＇
2025-02-08T07:12:55.906603Z 0 [Note] Shutting down plugin ＇binlog＇
2025-02-08T07:12:55.919356Z 0 [Note] /www/server/mysql/bin/mysqld: Shutdown complete
解決辦法：
原因：/tmp/mysql.sock.lock 文件為空導致的
解決：手動刪除/tmp/mysql.sock.lock 文件，重啟mysql測試啟動正常
