Can't start elasticsearch service

[Abdesslem_Jerbi]

Hi all,
i work on ubuntu VM ,and i cant start service ES;;i followed all the steps for installation
Synchronizing state of elasticsearch.service with SysV init with /lib/systemd/systemd-sysv-install...
Executing /lib/systemd/systemd-sysv-install enable elasticsearch
root@orange-VirtualBox:/home/ELK# sudo /bin/systemctl start elasticsearch.service
root@orange-VirtualBox:/home/ELK# service elasticsearch status
● elasticsearch.service - Elasticsearch
Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: e
Active: failed (Result: exit-code) since ven. 2018-04-06 15:20:36 CEST; 5s ago
Docs: http://www.elastic.co
Process: 2210 ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/elastics
Process: 2208 ExecStartPre=/usr/share/elasticsearch/bin/elasticsearch-systemd-pre-exec (c
Main PID: 2210 (code=exited, status=1/FAILURE)

    avril 06 15:20:27 orange-VirtualBox systemd[1]: Started Elasticsearch.
    avril 06 15:20:31 orange-VirtualBox elasticsearch[2210]: Java HotSpot(TM) 64-Bit Server VM 
    avril 06 15:20:31 orange-VirtualBox elasticsearch[2210]: #
    avril 06 15:20:31 orange-VirtualBox elasticsearch[2210]: # There is insufficient memory for
    avril 06 15:20:31 orange-VirtualBox elasticsearch[2210]: # Native memory allocation (mmap) 
    avril 06 15:20:31 orange-VirtualBox elasticsearch[2210]: # An error report file with more i
    avril 06 15:20:31 orange-VirtualBox elasticsearch[2210]: # /tmp/hs_err_pid2210.log
    avril 06 15:20:36 orange-VirtualBox systemd[1]: elasticsearch.service: Main process exited,
    avril 06 15:20:36 orange-VirtualBox systemd[1]: elasticsearch.service: Unit entered failed 
    avril 06 15:20:36 orange-VirtualBox systemd[1]: elasticsearch.service: Failed with result '

[A_B]

Did you check /tmp/hs_err_pid2210.log? How much RAM does your VM have?

There is insufficient memory for Native memory allocation (mmap)