Zabbix template not updating with hosts more than 1000

[Tejesh kalyan]

Hi All,

I have a template with hosts more than 1000. When I am trying to update an item or a trigger, the zabbix page is displaying a blank page with header.

https://support.zabbix.com/browse/ZBX-12044 referring to this thread, a template can have only 951 hosts. Could someone please help me in resolving the issue.

Thanks in advance.

[ingus.vilnis]

Did you try to go though the troubleshooting steps mentioned in the linked issue?

[Tejesh kalyan]

Hi Ingus,

Thank you for the reply.

I have update the max_input_vars in php.ini file to 30000 but it didn't work.

Thanks

[ingus.vilnis]

Restarted apache/httpd or whatever web server you have after the change?

Do you see anything in the web server's error logs?

[Tejesh kalyan]

PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 77 bytes) in /var/www/html/zabbix/include/classes/api/CApiService.php on line 286,

max_input_vars = 300000
php_value max_input_vars 300000

Do I need to reduce the value?

[ingus.vilnis]

So it is not the correct setting you are tuning first of all.

Set max_input_vars = 10000 and leave it till you reach 10 thousand hosts in your setup.

Would you kindly search for the error message you actually get in the logs and propose a solution for that?

[Tejesh kalyan]

Thank you it worked. I have increased the memory limit to 512M.

[kloczek]

Because single mass host update/delete locks a lot of zabbix tables I would recommend to do such update in the loop for each host over API.
With such approach is not necessary to increase any limits in php.ini and it will not cause stopping update triggers (because between each host update will be enough time to absorb and evaluate new incomming monitoring data against triggers definitions).

[Tejesh kalyan]

Agree with kloczek. Both ways worked. Thank you for helping me