# service elasticsearch startStarting elasticsearch (via systemctl): [ OK ]# curl -X GET 'http://localhost:9200'curl: (7) Failed connect to localhost:9200; Connection refused
Jul 12 15:11:47 qmarketing systemd[1]: Starting Elasticsearch...
Jul 12 15:11:47 qmarketing systemd[1]: Started Elasticsearch.
Jul 12 15:11:54 qmarketing systemd[1]: elasticsearch.service: main process exited, code=killed, status=9
Jul 12 15:11:54 qmarketing systemd[1]: Unit elasticsearch.service entered failed state.
Jul 12 15:11:54 qmarketing systemd[1]: elasticsearch.service failed.
Jul 12 15:17:00 qmarketing systemd[1]: Starting Elasticsearch...
Jul 12 15:17:00 qmarketing systemd[1]: Started Elasticsearch.
Jul 12 15:17:07 qmarketing systemd[1]: elasticsearch.service: main process exited, code=killed, status=9
Jul 12 15:17:07 qmarketing systemd[1]: Unit elasticsearch.service entered failed state.
Jul 12 15:17:07 qmarketing systemd[1]: elasticsearch.service failed.
Jul 12 15:26:39 qmarketing systemd[1]: Starting Elasticsearch...
Jul 12 15:26:39 qmarketing systemd[1]: Started Elasticsearch.
Jul 12 15:26:48 qmarketing systemd[1]: elasticsearch.service: main process exited, code=killed, status=9
Jul 12 15:26:48 qmarketing systemd[1]: Unit elasticsearch.service entered failed state.
Jul 12 15:26:48 qmarketing systemd[1]: elasticsearch.service failed.
sudo -u elasticsearch elasticsearch.