this issue tracker is for bugreports, and the current issue looks more like a support request at this time - please see http://zabbix.org/wiki/Getting_help for support options.
in this case, try starting agent daemon directly and see whether there are any errors
Greetings,
I had the same issue and by looking at logs with this command "tail -1 /var/log/zabbix/zabbix_agentd.log" i have observed:
zabbix_agentd [30615]: cannot open log: cannot create semaphore set: [28] No space left on device
i had gathered info on this from:
https://gerardnico.com/linux/semaphore
and checked the semaphore array max usage:
$>cat /proc/sys/kernel/sem
output: 250 32000 32 128
$>ipcs -s | grep -c "^0x"
output: 128
the last value, 128 is the max limit reached for semaphore arrays, so i needed to increase that, by doing:
$>echo "kernel.sem = 250 32000 32 256" >> /etc/sysctl.conf
$> sysctl -p /etc/sysctl.conf
output: kernel.sem = 250 32000 32 256
After this, i needed to check the new sempahore array:
$> cat /proc/sys/kernel/sem
output: 250 32000 32 256
and restart zabbix:
$> systemctl start zabbix-agent
$> systemctl status zabbix-agent
● zabbix-agent.service - Zabbix Agent
Loaded: loaded (/usr/lib/systemd/system/zabbix-agent.service; enabled; vendor preset: disabled)
Active: active (running) since Sat 2018-05-05 13:20:09 ADT; 26s ago
Process: 30681 ExecStart=/usr/sbin/zabbix_agentd -c $CONFFILE (code=exited, status=0/SUCCESS)
Main PID: 30683 (zabbix_agentd)
CGroup: /system.slice/zabbix-agent.service
├─30683 /usr/sbin/zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf
├─30684 /usr/sbin/zabbix_agentd: collector [idle 1 sec]
├─30685 /usr/sbin/zabbix_agentd: listener #1 [waiting for connection]
├─30686 /usr/sbin/zabbix_agentd: listener #2 [waiting for connection]
├─30687 /usr/sbin/zabbix_agentd: listener #3 [waiting for connection]
└─30688 /usr/sbin/zabbix_agentd: active checks #1 [idle 1 sec]
Thanks to everyone for their help 