I rebooted my server today and mysql has just disappeared:
2024-01-29T12:42:50.379133Z 0 [Note] Server hostname (bind-address): '*'; port: 3306
2024-01-29T12:42:50.379184Z 0 [Note] IPv6 is available.
2024-01-29T12:42:50.379195Z 0 [Note] - '::' resolves to '::';
2024-01-29T12:42:50.379310Z 0 [Note] Server socket created on IP: '::'.
2024-01-29T12:42:50.391969Z 0 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.db' doesn't exist
2024-01-29T12:42:50.392008Z 0 [ERROR] Fatal error: Failed to initialize ACL/grant/time zones structures or failed to remove temporary table files.
2024-01-29T12:42:50.392108Z 0 [ERROR] Aborting
2024-01-29T12:42:50.392161Z 0 [Note] Binlog end
2024-01-29T12:42:50.398620Z 0 [Note] Shutting down plugin 'ngram'
2024-01-29T12:42:50.398649Z 0 [Note] Shutting down plugin 'partition'
2024-01-29T12:42:50.398657Z 0 [Note] Shutting down plugin 'BLACKHOLE'
2024-01-29T12:42:50.398664Z 0 [Note] Shutting down plugin 'ARCHIVE'
2024-01-29T12:42:50.398671Z 0 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2024-01-29T12:42:50.398770Z 0 [Note] Shutting down plugin 'MRG_MYISAM'
2024-01-29T12:42:50.398778Z 0 [Note] Shutting down plugin 'MyISAM'
2024-01-29T12:42:50.398802Z 0 [Note] Shutting down plugin 'INNODB_SYS_VIRTUAL'
2024-01-29T12:42:50.398809Z 0 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2024-01-29T12:42:50.398815Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2024-01-29T12:42:50.398821Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2024-01-29T12:42:50.398827Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2024-01-29T12:42:50.398833Z 0 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2024-01-29T12:42:50.398839Z 0 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2024-01-29T12:42:50.398845Z 0 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2024-01-29T12:42:50.398852Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2024-01-29T12:42:50.398858Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2024-01-29T12:42:50.398864Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2024-01-29T12:42:50.398870Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2024-01-29T12:42:50.398876Z 0 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2024-01-29T12:42:50.398882Z 0 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2024-01-29T12:42:50.398888Z 0 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2024-01-29T12:42:50.398894Z 0 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2024-01-29T12:42:50.398900Z 0 [Note] Shutting down plugin 'INNODB_METRICS'
2024-01-29T12:42:50.398906Z 0 [Note] Shutting down plugin 'INNODB_TEMP_TABLE_INFO'
2024-01-29T12:42:50.398912Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2024-01-29T12:42:50.398918Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2024-01-29T12:42:50.398924Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2024-01-29T12:42:50.398930Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2024-01-29T12:42:50.398936Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2024-01-29T12:42:50.398942Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2024-01-29T12:42:50.398948Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM'
2024-01-29T12:42:50.398954Z 0 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2024-01-29T12:42:50.398960Z 0 [Note] Shutting down plugin 'INNODB_CMP'
2024-01-29T12:42:50.398966Z 0 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2024-01-29T12:42:50.398972Z 0 [Note] Shutting down plugin 'INNODB_LOCKS'
2024-01-29T12:42:50.398978Z 0 [Note] Shutting down plugin 'INNODB_TRX'
2024-01-29T12:42:50.398985Z 0 [Note] Shutting down plugin 'InnoDB'
2024-01-29T12:42:50.399080Z 0 [Note] InnoDB: FTS optimize thread exiting.
2024-01-29T12:42:50.399183Z 0 [Note] InnoDB: Starting shutdown...
2024-01-29T12:42:50.499425Z 0 [Note] InnoDB: Dumping buffer pool(s) to /www/server/data/ib_buffer_pool
2024-01-29T12:42:50.499605Z 0 [Note] InnoDB: Buffer pool(s) dump completed at 240129 12:42:50
2024-01-29T12:42:51.978605Z 0 [Note] InnoDB: Shutdown completed; log sequence number 1472438706
2024-01-29T12:42:51.980853Z 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2024-01-29T12:42:51.980867Z 0 [Note] Shutting down plugin 'MEMORY'
2024-01-29T12:42:51.980875Z 0 [Note] Shutting down plugin 'CSV'
2024-01-29T12:42:51.980880Z 0 [Note] Shutting down plugin 'sha256_password'
2024-01-29T12:42:51.980884Z 0 [Note] Shutting down plugin 'mysql_native_password'
2024-01-29T12:42:51.981058Z 0 [Note] Shutting down plugin 'binlog'
2024-01-29T12:42:51.997056Z 0 [Note] /www/server/mysql/bin/mysqld: Shutdown complete
Anyone know how to fix?