:: mysqld_safe Starting mysqld daemon with databases from /data/mysqldb

-- ::  [Note] /usr/local/mysql/bin/mysqld (mysqld 5.6.-log) starting as process  ...

-- ::  [Warning] option 'innodb-buffer-pool-instances': signed value - adjusted to

/usr/local/mysql/bin/mysqld: Table 'mysql.plugin' doesn't exist

-- ::  [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.

-- ::  [Note] InnoDB: Using atomics to ref count buffer pool pages

-- ::  [Note] InnoDB: The InnoDB memory heap is disabled

-- ::  [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

-- ::  [Note] InnoDB: Memory barrier is not used

-- ::  [Note] InnoDB: Compressed tables use zlib 1.2.

-- ::  [Note] InnoDB: Using CPU crc32 instructions

-- ::  [Note] InnoDB: Initializing buffer pool, size = .0G

InnoDB: mmap( bytes) failed; errno

-- ::  [ERROR] InnoDB: Cannot allocate memory for the buffer pool

-- ::  [ERROR] Plugin 'InnoDB' init function returned error.

-- ::  [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.

-- ::  [ERROR] Unknown/unsupported storage engine: InnoDB

-- ::  [ERROR] Aborting

-- ::  [Note] Binlog end

-- ::  [Note] Shutting down plugin 'partition'

-- ::  [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'

-- ::  [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'

-- ::  [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'

-- ::  [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'

-- ::  [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'

-- ::  [Note] Shutting down plugin 'INNODB_SYS_FIELDS'

[root@ip---- log]# free -m

              total        used        free      shared  buff/cache   available

Mem:

Swap: