Mysql 5.6.44 is not starting.
2019-12-12 17:42:21 19815 [Note] Plugin 'FEDERATED' is disabled.
2019-12-12 17:42:21 19815 [Note] InnoDB: Using atomics to ref count buffer pool pages
2019-12-12 17:42:21 19815 [Note] InnoDB: The InnoDB memory heap is disabled
2019-12-12 17:42:21 19815 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2019-12-12 17:42:21 19815 [Note] InnoDB: Memory barrier is not used
2019-12-12 17:42:21 19815 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-12-12 17:42:21 19815 [Note] InnoDB: Using Linux native AIO
2019-12-12 17:42:21 19815 [Note] InnoDB: Using CPU crc32 instructions
2019-12-12 17:42:21 19815 [Note] InnoDB: Initializing buffer pool, size = 16.0M
InnoDB: mmap(17170432 bytes) failed; errno 12
2019-12-12 17:42:21 19815 [ERROR] InnoDB: Cannot allocate memory for the buffer pool
2019-12-12 17:42:21 19815 [ERROR] Plugin 'InnoDB' init function returned error.
2019-12-12 17:42:21 19815 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2019-12-12 17:42:21 19815 [ERROR] Unknown/unsupported storage engine: InnoDB
2019-12-12 17:42:21 19815 [ERROR] Aborting