Zabbix alpha2 5.0.0 Frontend logging out after a few seconds, "You are not logged in"

[sirovstrukelj]

Hello,

I configured Zabbix server Alpha2 5.0.0 from packages on Centos 7. I made sure that I followed the guides and installed several time on fresh machines. The zabbix server log does not show any errors, even at debuglevel 4. This happens after some time clicking in the UI, or just waiting 10 seconds and then clicking whatever. The catch is, it works in Incognito in chrome, normally no. Maybe it's a cookie issue? I am running zabbix server version 4.1 on another port, I thought cookies would be mixed up so i cleared everything but it did not help. I also tried firefox and the UI does not log out. So it only logs me out on my regular chrome tab window.

I got this errors from error_log from apache.

html/: No matching DirectoryIndex (index.html) found, and server-generated directory index forbidden by Options directive
[Tue Mar 03 08:54:00.327099 2020] [mpm_prefork:notice] [pid 2639] AH00170: caught SIGWINCH, shutting down gracefully
[Tue Mar 03 08:54:01.398547 2020] [core:notice] [pid 15321] SELinux policy enabled; httpd running as context system_u:system_r:httpd_t
s0
[Tue Mar 03 08:54:01.399485 2020] [suexec:notice] [pid 15321] AH01232: suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1. Set the 'ServerName' directive
globally to suppress this message
[Tue Mar 03 08:54:01.412503 2020] [lbmethod_heartbeat:notice] [pid 15321] AH02282: No slotmem from mod_heartmonitor
[Tue Mar 03 08:54:01.420457 2020] [mpm_prefork:notice] [pid 15321] AH00163: Apache/2.4.6 (CentOS) configured -- resuming normal operat
ons
[Tue Mar 03 08:54:01.420483 2020] [core:notice] [pid 15321] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'

[sirovstrukelj]

I have managed to replicate it:

(all in the same browser)
1. Log in the dashboard for Zabbix server 5.0.0. alpha2
2. log in the dashboard for zabbix server 4.4
3. wait for some time
4. you will get logged out of the alpha version dashboard

[sirovstrukelj]

Both dashboards are running on different virtual machines which are behind a NAT on the host. Both dashboards i am accessing trough the same IP but different ports.