Zabbix Service Not Active

[kumaresh]

My Zabbix Webfornt page is not loading properly and getting the following error message on Administrator -> Queue page. Can you help me out.\

Error Message:

• Connection to Zabbix server "X.X.X.X" refused. Possible reasons:
• 1. Incorrect server IP/DNS in the "zabbix.conf.php";
• 2. Security environment (for example, SELinux) is blocking the connection;
• 3. Zabbix server daemon not running;
• 4. Firewall is blocking TCP connection.
• Connection refused

Server Details:
OS: RHEL 7.4 (Maipo)
Zabbix Version: 3.4.7


[root@XYZ~]# systemctl status zabbix-server.service
● zabbix-server.service - Zabbix Server
Loaded: loaded (/usr/lib/systemd/system/zabbix-server.service; enabled; vendor preset: disabled)
Active: activating (auto-restart) (Result: exit-code) since Thu 2018-05-10 18:14:31 IST; 6s ago
Process: 17626 ExecStop=/bin/kill -SIGTERM $MAINPID (code=exited, status=1/FAILURE)
Process: 17557 ExecStart=/usr/sbin/zabbix_server -c $CONFFILE (code=exited, status=0/SUCCESS)
Main PID: 17559 (code=exited, status=0/SUCCESS)
May 10 18:14:31 Redhat systemd[1]: zabbix-server.service: control process exited, code=exited status=1
May 10 18:14:31 Redhat systemd[1]: Unit zabbix-server.service entered failed state.
May 10 18:14:31 Redhat systemd[1]: zabbix-server.service failed.

Zabbix Log Details:
[root@XYZ~]# tail -50 /var/log/zabbix/zabbix_server.log
18450:20180510:181705.112 7fb9b11fc000-7fb9b1205000 r--p 002dd000 fd:00 33706958 /usr/lib64/mysql/libmysqlclient.so.18.0.0
18449:20180510:181705.112 Please consider attaching a disassembly listing to your bug report.
18450:20180510:181705.112 7fb9b1205000-7fb9b1219000 rw-p 002e6000 fd:00 33706958 /usr/lib64/mysql/libmysqlclient.so.18.0.0
18449:20180510:181705.112 This listing can be produced with, e.g., objdump -DSswx zabbix_server.
18450:20180510:181705.112 7fb9b1219000-7fb9b121f000 rw-p 00000000 00:00 0
18449:20180510:181705.112 ================================
18450:20180510:181705.114 7fb9b121f000-7fb9b1240000 r-xp 00000000 fd:00 782139 /usr/lib64/ld-2.17.so
18442:20180510:181705.114 One child process died (PID:18449,exitcode/signal:1). Exiting ...
18450:20180510:181705.140 7fb9b12e6000-7fb9b141a000 rw-s 00000000 00:04 50397188 /SYSV00000000 (deleted)
18442:20180510:181707.115 syncing history data...
18442:20180510:181707.133 syncing history data done
18442:20180510:181707.133 syncing trend data...
18442:20180510:181707.140 syncing trend data done
18442:20180510:181707.141 Zabbix Server stopped. Zabbix 3.4.0 (revision 71467).

[kumaresh]

The error is now appeared to "Connection timeout of 3 seconds exceeded when connecting to Zabbix server "X.X.X.X"" . Any suggestion on this error?

[alcsantiago]

I have the same topic problem.
Did you solve it?

[Atsushi]

Please check the log of the Zabbix server.
The reason why Zabbix server can not be started on CentOS 7 may be due to insufficient SELinux policy setting.