Zabbix is not running on FrontEnd

[SwitchZabbix]

Hi,
I have what seems a common problem but cannot find a solution.

My setup is:
Zabbix frontend server Ubuntu 18.04 Server - Zabbix 4.0.2
Database is a Windows Server with MySQL

Server version: 8.0.11 - MySQL Community Server - GPL[LIST][*]Protocol version: 10[*]User: ZabbixDB@localhost[*]Server charset:  UTF-8 Unicode (utf8)[*]PHP version: 7.2.7[/LIST]

I had followed this: https://www.zabbix.com/download?zabb...ionic&db=MySQL

but with some changes: MySQL is on a remote server. So I did this command instead the one in the "standard setup"
sudo zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -uMyDBUser -p'<MyPass>' -h MySQL.MyDomain.My -P 3306 Zabbix

The Zabbix database was created and schema populated.

I was able to login to the Zabbix frontend with the admin user but I have the message "Zabbix is not running....".

I then checked the Zabbix service status:

zabbix-server.service - Zabbix Server
   Loaded: loaded (/lib/systemd/system/zabbix-server.service; enabled; vendor preset: enabled)
   Active: active (running) since Thu 2018-11-29 14:55:42 UTC; 2s ago
  Process: 2324 ExecStop=/bin/kill -SIGTERM $MAINPID (code=exited, status=0/SUCCESS)
  Process: 2325 ExecStart=/usr/sbin/zabbix_server -c $CONFFILE (code=exited, status=0/SUCCESS)
 Main PID: 2337 (zabbix_server)
    Tasks: 1 (limit: 898)
   CGroup: /system.slice/zabbix-server.service
           ΓööΓöÇ2337 /usr/sbin/zabbix_server -c /etc/zabbix/zabbix_server.conf

Nov 29 14:55:42 lzabbix101 systemd[1]: zabbix-server.service: Main process exited, code=exited, status=1/FAILURE
Nov 29 14:55:42 lzabbix101 systemd[1]: zabbix-server.service: Failed with result 'exit-code'.
Nov 29 14:55:42 lzabbix101 systemd[1]: Stopped Zabbix Server.
Nov 29 14:55:42 lzabbix101 systemd[1]: Starting Zabbix Server...
Nov 29 14:55:42 lzabbix101 systemd[1]: zabbix-server.service: Can't open PID file /run/zabbix/zabbix_server.pid (yet?) after start: No such file or directory
Nov 29 14:55:42 lzabbix101 systemd[1]: Started Zabbix Server.

Checked the file

/run/zabbix/zabbix_server.pid
2337

The PID is the good PID and successfully change after a service restart

Checked the rights: -rw-rw-rw- 1 zabbix zabbix 4 Nov 29 15:33 /run/zabbix/zabbix_server.pid

Checked Telnet:
telnet MyFrontend.MyDomain.My 10051
Trying 999.999.999.999...
telnet: Unable to connect to remote host: Connection refused

DNS is well resolved.

/etc/zabbix/web/zabbix.conf.php
   global $DB;

$DB['TYPE']     = 'MYSQL';
$DB['SERVER']   = 'MySQL.MyDomain.My';
$DB['PORT']     = '3306';
$DB['DATABASE'] = 'zabbix';
$DB['USER']     = 'MyDBUser';
$DB['PASSWORD'] = 'MyPass';

$ZBX_SERVER      = 'MyFrontend.MyDomain.My';
$ZBX_SERVER_PORT = '10051';
$ZBX_SERVER_NAME = 'Zabbix for My';

And finally

/etc/zabbix/zabbix_server.conf

DBHost=[COLOR=#252C2F][FONT=Open Sans][SIZE=13px]MySQL.MyDomain.My[/SIZE][/FONT][/COLOR]
DBUser=MyDBUser
DBPassword=MyPass
DBPort=3306

I am running out of idea... Do you see where I am wrong?

[dimir]

Do you have some security enhancer enabled, e. g. SELinux? In that case you might need to add it's rules to allow Zabbix communication.

[SwitchZabbix]

SELinux is not installed on Ubuntu server. But AppArmor is active. I was not able to find an AppArmor profile for Zabbix server. I tried to disable AppArmor and test the frontend without success. I tried to restart the service with AppArmor disabled and test frontend without success. I did not test to disable AppArmor then reboot.

[SwitchZabbix]

Just tried to disable AppArmor and restart:
service --status-all
[ - ] apparmor
...
[ + ] zabbix-agent
[ + ] zabbix-server

Same result. Unfortunately

[SwitchZabbix]

Resolved, seems to be a corrupted Zabbix_server.conf file. I took a virgin conf file, changed parameters and start services then all run like a charm... Thank for your help

[amonroe]

How did you know that it was corrupt? I'm experiencing the same issue.

[acatic1]

I might have the same issue. Fresh build of v5 with mysql/apache on centos8. Went through the whole setup guide, everything looked good, zabbix service running. I can't get the homepage to load! Server connectivity fine otherwise.

[dimir]

No problem! Good luck!