Graylog-server.service failed

Graylog Central (peer support)
1

I have installed mongod, elasticsearch and graylog-server.noarch successfully. But when I check the status of graylog（systemctl status graylog-server），it outputs errors:

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[root@localhost ~]# systemctl status graylog-server
● graylog-server.service - Graylog server
Loaded: loaded (/usr/lib/systemd/system/graylog-server.service; enabled; vendor preset: disabled)
Active: activating (auto-restart) (Result: exit-code) since Thu 2020-07-23 16:14:57 CST; 7s ago
Docs: http://docs.graylog.org/
Process: 71625 ExecStart=/usr/share/graylog-server/bin/graylog-server (code=exited, status=1/FAILURE)
Main PID: 71625 (code=exited, status=1/FAILURE)

Jul 23 16:14:57 localhost systemd[1]: graylog-server.service: main process exited, code=exited, status=1/FAILURE
Jul 23 16:14:57 localhost systemd[1]: Unit graylog-server.service entered failed state.
Jul 23 16:14:57 localhost systemd[1]: graylog-server.service failed.
###########################################################################

How to solve the problem?
Who knows? Thanks!

2

Have you followed the post-installation steps, especially about passwords?
https://docs.graylog.org/en/3.3/pages/installation/os/centos.html#edit-the-configuration-file

3

Also check log files /var/log/graylog-server/

4

There is no file in /var/log/graylog-server/

5

Yes, I have followed the steps.

6

OS and Graylog version?

7

CentOS 7.8.2003
Graylog 3.0.2-1

8

Is this default installation as in documentation?
https://docs.graylog.org/en/3.0/pages/installation/os/centos.html

9

I find the problem just now. Before the installation, I have to update CentOS.
Thanks for your help!

10

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