Graylog 4.1.5 - Blank page when try to access web interface

Graylog Central (peer support)
1

Hello
Faced this error. Shows nothing when opening a webpage, just a white background.

2021-09-15_21-37-59
2021-09-15_21-37-591919×988 34.4 KB

Description of problem

After updating Graylog from version 4.0.5 to 4.1.5 and connecting the plugin for sending notifications to the telegram group and creating a notification in Graylog, I lost access to the web interface.
Before connecting the telegram plugin and creating notifications in Graylog, everything worked fine.
The Graylog update was performed according to the instructions: Operating System Packages — Graylog 4.1.0 documentation
The plugin was installed according to the instructions: GitHub - irgendwr/TelegramAlert: 🔔 Telegram Notification Plugin for Graylog

Description of steps I’ve taken to attempt to solve the issue

  1. Checked port 9000 is open - telnet 10.1.1.133 9000.
  2. Enableb CORS headers for HTTP interface
    http_enable_cors = true
  3. Checked the console when accessing the webpage
    Sceenshots was attached.
    2021-09-15_20-23-20
    2021-09-15_20-23-201919×944 267 KB

    2021-09-15_20-23-39
    2021-09-15_20-23-391899×346 82 KB

Operating system information

  • CentOS 7 (2009) with last updates.

Package versions

  1. Elasticsearch-oss-0:7.10.2-1.x86_64

  2. Graylog-4.1-repository-0:1-3.noarch
    Graylog-enterprise-integrations-plugins-0:4.1.5-1.noarch
    Graylog-enterprise-plugins-0:4.1.5-1.noarch
    Graylog-integrations-plugins-0:4.1.5-1.noarch
    Graylog-server-0:4.1.5-1.noarch

  3. Mongodb-org-0:4.2.16-1.el7.x86_64
    Mongodb-org-mongos-0:4.2.16-1.el7.x86_64
    Mongodb-org-server-0:4.2.16-1.el7.x86_64
    Mongodb-org-shell-0:4.2.16-1.el7.x86_64
    Mongodb-org-tools-0:4.2.16-1.el7.x86_64

Thank You for attention.
Regards, Nursultan.

2
server.conf
3

Are you seeing anything in Graylog logs?

tail -f /var/log/graylog-server/server.log

4

[user3@srv-graylog4 ~]# tail -f /var/log/graylog-server/server.log
2021-09-15T22:13:38.195+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:39.212+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:40.197+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:41.197+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:43.233+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:44.065+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:45.070+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:46.066+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:47.074+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:48.061+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:49.070+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:50.062+05:00 ERROR [AuditLogger] Unable to write audit log entr y because there is no valid license.
2021-09-15T22:13:51.072+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:13:52.073+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:13:53.078+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:13:54.070+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:13:55.071+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:13:56.090+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:13:57.076+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:13:58.154+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:13:59.085+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:13:59.986+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:14:00.473+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:14:01.207+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:14:01.941+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:14:02.173+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:05.850+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:08.410+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:08.562+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:11.752+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:11.895+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:12.860+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:13.001+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:13.925+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:14.062+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:15.004+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:15.148+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:37.093+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:37.234+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:40.494+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:41.298+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:41.939+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:42.165+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
^C
[user3@srv-graylog4 ~]# tail -f /var/log/graylog-server/server.log
2021-09-15T22:15:13.925+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:14.062+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:15.004+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:15.148+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:37.093+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:37.234+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:40.494+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:41.298+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:41.939+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.
2021-09-15T22:15:42.165+05:00 ERROR [AuditLogger] Unable to write audit log entry because there is no valid license.

5

Did you try a different browser? I notice the one you posted notes its connecting(?) via VPN?

Maybe back out the plugin /usr/share/graylog-server/plugin/ and restart graylog?

6
  • Did you try a different browser? I notice the one you posted notes its connecting(?) via VPN?
  • Yes, I tried a different browsers (Opera, Mozilla Firefox, Google Chrome, Vivaldi). I posted notes via VPN. Also i tried to open http://10.1.1.133:9000 being from the same subnet, for example from 10.1.1.240. Same problem, blank page again.
  • Maybe back out the plugin /usr/share/graylog-server/plugin/ and restart graylog?
  • I deleted graylog-plugin-telegram-notification-2.3.6.jar and restarted Graylog. Graylog works fine.

I wanted to implement sending notifications from Graylog for certain events. Additionally, I wrote to the author of the plugin about the problem.

7

The plugin author suggested that the error was related to the enterprise plugin. After removing the plugin, the web interface began to open.

yum remove graylog-enterprise-plugins

Thank You for help and attention.

8

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