The new Centos 7, RPM installation cannot run

Elastic Stack Elasticsearch
1

I followed the guide,complete installation. but curl -XGET 'http://localhost:9200' didn't work.
So I check systemctl status elasticsearch.service -l and get:

Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Sat 2018-07-21 15:39:34 EDT; 1min 40s ago
     Docs: http://www.elastic.co
  Process: 10522 ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/elasticsearch.pid --quiet -Edefault.path.logs=${LOG_DIR} -Edefault.path.data=${DATA_DIR} -Edefault.path.conf=${CONF_DIR} (code=exited, status=1/FAILURE)
  Process: 10520 ExecStartPre=/usr/share/elasticsearch/bin/elasticsearch-systemd-pre-exec (code=exited, status=0/SUCCESS)
 Main PID: 10522 (code=exited, status=1/FAILURE)

Jul 21 15:39:34 host.localdomain systemd[1]: Starting Elasticsearch...
Jul 21 15:39:34 host.localdomain systemd[1]: Started Elasticsearch.
Jul 21 15:39:34 host.localdomain systemd[1]: elasticsearch.service: main process exited, code=exited, status=1/FAILURE
Jul 21 15:39:34 host.localdomain systemd[1]: Unit elasticsearch.service entered failed state.
Jul 21 15:39:34 host.localdomain systemd[1]: elasticsearch.service failed.

I don't understand why...

2

The program version is jdk1.8.0_181 and Elasticsearch 5.6.10.

3

Check the logs. It will tell you why. Probably insufficient memory or host limitations on files. All easy fixed.

5

No log generation.

6

Elasticsearch doesn't seem to work with ROOT.
But when I asked people, they said that using RPM for installation under ROOT was work.So I install it with ROOT, is that the reason for the problem?

7

usejournalctl -u elasticsearch -b
Jul 22 02:46:14 host.localdomain systemd[1]: Starting Elasticsearch...
Jul 22 02:46:14 host.localdomain systemd[1]: Started Elasticsearch.
Jul 22 02:46:14 host.localdomain systemd[1]: elasticsearch.service: main process exited, code=exited, status=1/FAILURE
Jul 22 02:46:14 host.localdomain systemd[1]: Unit elasticsearch.service entered failed state.
Jul 22 02:46:14 host.localdomain systemd[1]: elasticsearch.service failed.
Jul 22 02:46:47 host.localdomain systemd[1]: Starting Elasticsearch...
Jul 22 02:46:47 host.localdomain systemd[1]: Started Elasticsearch.
Jul 22 02:46:47 host.localdomain systemd[1]: elasticsearch.service: main process exited, code=exited, status=1/FAILURE
Jul 22 02:46:47 host.localdomain systemd[1]: Unit elasticsearch.service entered failed state.
Jul 22 02:46:47 host.localdomain systemd[1]: elasticsearch.service failed.
Jul 22 02:47:52 host.localdomain systemd[1]: Starting Elasticsearch...
Jul 22 02:47:52 host.localdomain systemd[1]: Started Elasticsearch.
Jul 22 02:47:52 host.localdomain systemd[1]: elasticsearch.service: main process exited, code=exited, status=1/FAILURE
Jul 22 02:47:52 host.localdomain systemd[1]: Unit elasticsearch.service entered failed state.
Jul 22 02:47:52 host.localdomain systemd[1]: elasticsearch.service failed.

8

This is the systemd log. How about /var/log/elasticsearch. Or similar for your os.

9 
[root@host ~]# cd /var/log/elasticsearch
[root@host elasticsearch]# ls
[root@host elasticsearch]#

Not seeing any...

and what is "similar for your OS"?

10

If you installed from the official Elastic provided RPM, then /var/log/elasticsearch is the correct directory.

Let's start by looking at files and permissions. Can you provide the output of the command below?

ls -ld /var/ /var/log/ /var/log/elasticsearch/ /usr/share/elasticsearch/ /usr/share/elasticsearch/bin/
11

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