不能初始化成功
```
[root@timyCentOS7 bin]# ./mysqld --initialize --user=mysql --datadir=/usr/local/mysql/data --basedir=/usr/local/mysql
2020-08-18 10:54:11 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2020-08-18 10:54:11 0 [Note] --secure-file-priv is set to NULL. Operations related to importing and exporting data are disabled
2020-08-18 10:54:11 0 [Note] ./mysqld (mysqld 5.6.46) starting as process 3697 ...
2020-08-18 10:54:11 3697 [Note] Plugin 'FEDERATED' is disabled.
./mysqld: Table 'mysql.plugin' doesn't exist
2020-08-18 10:54:11 3697 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
2020-08-18 10:54:11 3697 [Note] InnoDB: Using atomics to ref count buffer pool pages
2020-08-18 10:54:11 3697 [Note] InnoDB: The InnoDB memory heap is disabled
2020-08-18 10:54:11 3697 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2020-08-18 10:54:11 3697 [Note] InnoDB: Memory barrier is not used
2020-08-18 10:54:11 3697 [Note] InnoDB: Compressed tables use zlib 1.2.11
2020-08-18 10:54:11 3697 [Note] InnoDB: Using Linux native AIO
2020-08-18 10:54:11 3697 [Note] InnoDB: Using CPU crc32 instructions
2020-08-18 10:54:11 3697 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2020-08-18 10:54:11 3697 [Note] InnoDB: Completed initialization of buffer pool
2020-08-18 10:54:11 3697 [Note] InnoDB: Highest supported file format is Barracuda.
2020-08-18 10:54:11 3697 [Note] InnoDB: 128 rollback segment(s) are active.
2020-08-18 10:54:11 3697 [Note] InnoDB: Waiting for purge to start
2020-08-18 10:54:11 3697 [Note] InnoDB: 5.6.46 started; log sequence number 1600617
2020-08-18 10:54:11 3697 [ERROR] ./mysqld: unknown option '--initialize'
2020-08-18 10:54:11 3697 [ERROR] Aborting
2020-08-18 10:54:11 3697 [Note] Binlog end
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'partition'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'ARCHIVE'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'BLACKHOLE'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_METRICS'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_CMPMEM'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_CMP'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_LOCKS'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'INNODB_TRX'
2020-08-18 10:54:11 3697 [Note] Shutting down plugin 'InnoDB'
2020-08-18 10:54:11 3697 [Note] InnoDB: FTS optimize thread exiting.
2020-08-18 10:54:11 3697 [Note] InnoDB: Starting shutdown...
2020-08-18 10:54:13 3697 [Note] InnoDB: Shutdown completed; log sequence number 1600627
2020-08-18 10:54:13 3697 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2020-08-18 10:54:13 3697 [Note] Shutting down plugin 'MyISAM'
2020-08-18 10:54:13 3697 [Note] Shutting down plugin 'CSV'
2020-08-18 10:54:13 3697 [Note] Shutting down plugin 'MRG_MYISAM'
2020-08-18 10:54:13 3697 [Note] Shutting down plugin 'MEMORY'
2020-08-18 10:54:13 3697 [Note] Shutting down plugin 'sha256_password'
2020-08-18 10:54:13 3697 [Note] Shutting down plugin 'mysql_old_password'
2020-08-18 10:54:13 3697 [Note] Shutting down plugin 'mysql_native_password'
2020-08-18 10:54:13 3697 [Note] Shutting down plugin 'binlog'
2020-08-18 10:54:13 3697 [Note] ./mysqld: Shutdown complete
```
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