Monitoring - Latest Data

[ppetrovic]

Hi,
have a problem with opening Monitoring - Latest Data tab. It does not open, just get empty page.

Zabbix 4.4.5 (server in cloud - centos8,apache,mariadb, 2 remote proxies)
74 hosts, 20k items, 9k triggers, new values per second 127

Read some articles saying its php issue. Can somebody help please?

Thanks!

[Atsushi]

Please check the logs.
If it's just a web front end, check your web server and php-fpm logs for any output.

[ppetrovic]

thanks, i did already and increased memory limit. Its working now but still slow...

[johnseraph]

I have the same problem but despite i increased the memory limit on php.ini, the problem remains. Have you any other suggestions? Below my zabbix.conf settings:

[zabbix]
user = apache
group = apache

listen = /run/php-fpm/zabbix.sock
listen.acl_users = apache,nginx
listen.allowed_clients = 127.0.0.1,172.16.50.231

pm = dynamic
pm.max_children = 50
pm.start_servers = 5
pm.min_spare_servers = 5
pm.max_spare_servers = 35

php_value[session.save_handler] = files
php_value[session.save_path] = /var/lib/php/session

php_value[max_execution_time] = 300
php_value[memory_limit] = 512M
php_value[post_max_size] = 32M
php_value[upload_max_filesize] = 4M
php_value[max_input_time] = 300
php_value[max_input_vars] = 10000
php_value[date.timezone] = Europe/Zurich

[dimir]

For the record, 4.4 is "End of life", suggest switching to 5.0.
The latest data page has always been the weak part on non-small installations. We have many issues like ZBX-18071, which it's not that easy to properly fix. You can search for "latest data slow" in our tracker.

[johnseraph]

In your opinion,is the fact that i can't see any graph for the latest data, always linked to the same problem?

[dimir]

As you were told already 2 times, it is recommended to first check your web backend logs. Find out which backend do you use and where are the error logs located.

[johnseraph]

I checked all logs and unfortunately i don't found any problem. From many forum i read that the problem of the empty latest data could be due to the agent on hosts.?

[dimir]

Can you specify which ones did you check? Can you tell which web server are you using for Zabbix frontend, nginx, apache or something else?

[johnseraph]

I'm using apache as web server. I checked the error file on path /vat/log/httpd. Is it correct or are there other files to check?

[dimir]

Apache configuration should tell you where's the error log.