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[AlDavis]

Hello,

Please forgive me if my question has been asnwered before. I am running zabbix 4.2.8 on Ubuntu 18.04. I had to perform a reboot the other day and now after the reboot the URL to my server is not working. When I log in with a valid user name and password I am sent to the screen showing:

You are not logged in, You must login to view this page.

• You must login to view this page.

• If you think this message is wrong, please consult your administrators about getting the necessary permissions.

If I login using the IP address it works.


Has anyone seen this behavior?

[capsx]

Hello!

Yes - the same issue here.
In one browser saved session is ok.
In other browser can't log in even when changed password from first browser.
Zabbix 5.0.1

[martinsdzerve]

Hello,

Just clear Zabbix server Cookies in your internet Browser and all will be ok!

[CaPaCuL]

I have the same problem. I tried versions 6.4 and 7.0. But clearing cookies is not the solution.

(My system is RHEL 9.2, apache(httpd)-2.4.53, mariadb-3:10.5.16, php-7.4.33)

[CaPaCuL]

I have the same problem. I tried versions 6.4 and 7.0. But clearing cookies is not the solution.

(My system is RHEL 9.2, apache(httpd)-2.4.53, mariadb-3:10.5.16, php-7.4.33)

Logs in /var/log/httpd/error_log are as follows:

[Sat Oct 21 18:01:00.041060 2023] [proxy_fcgi:error] [pid 3353:tid 3415] [client 192.168.1.1:50619] AH01071: Got error 'PHP message: PHP Warning:  Cannot modify header information - headers already sent in /usr/share/zabbix/include/classes/helpers/CCookieHelper.php on line 59PHP message: PHP Warning:  Unknown: Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/session) in Unknown on line 0', referer: https://zbx.domain.tld/index.php?request=zabbix.php%3Faction%3Ddashboard.view

[zmm]

Hey, did you checked if the user apache has access to /var/lib/php/session? Or any other user on which apache server is runnig?

[CaPaCuL]

Hey, did you checked if the user apache has access to /var/lib/php/session? Or any other user on which apache server is runnig?

yes I checked, apache has access to /var/lib/php/session. Another user is not running Apache.

I also added zabbix to the apache group and apache to the zabbix group:

cat /etc/group | grep apache

apache:x:48:user1,user2,zabbix,apache
zabbix:x:968:zabbix,apache

I restarted the services and then the server, but nothing changed, the problem continues.

[Sunstone]

Zabbix 6.4 + Nginx
Had kinda the same issue. Users couldn't log in again, after entering creds they saw You didn't log in window. Anyway through admin account (old active session) those users seemed to be in system. Changing passwords didn't help

The problem was in /etc/php.ini
Admin changed these options

zlib.output_compression = On
zlib.output_compression_level = 5

Reverting to defaults fixed the issue

zlib.output_compression = Off
zlib.output_compression_level = -1