I have 2 Zabbix Servers running in the same location.
They both monitor a website using the net.tcp.service[https] simple check.
One Zabbix server has been firing false alerts constantly, and I cannot figure out why.
The problematic server is Debian 12, with Zabbix 7.2
The other server is Debian 9.2 with zabbix 4.0 (yes its old!)
A screenshot of the up/down state over the past 12 hours from the problematic server:
VS the other
Debug logging enabled on the problematic server shows no obvious issues, only logging this:
This is with max verbosity enabled.
The site is also monitored by HTTP check, from both servers, and this gives no issues.
The problematic server has no issues parsing the site via Curl, even when it says its own, but as you can see, its so sporadic, there might be a moment that it cannot.
for further testing, I have a Web Scenario setup to montior the site, which does NOT fire the false alerts. This is only setup on the problematic server:
(the blips at the beggining where me testing)
I feel that if I could enable further debug logging on the simple check, I could track down the issue, but am stuck at this point. Any help much appreciated.
They both monitor a website using the net.tcp.service[https] simple check.
One Zabbix server has been firing false alerts constantly, and I cannot figure out why.
The problematic server is Debian 12, with Zabbix 7.2
The other server is Debian 9.2 with zabbix 4.0 (yes its old!)
A screenshot of the up/down state over the past 12 hours from the problematic server:
VS the other
Debug logging enabled on the problematic server shows no obvious issues, only logging this:
Code:
In zbx_evaluate_function() function:'max(/website.tldr Website/net.tcp.service[https],#3)' ts:'2025.05.09 15:00:11.175435254'
The site is also monitored by HTTP check, from both servers, and this gives no issues.
The problematic server has no issues parsing the site via Curl, even when it says its own, but as you can see, its so sporadic, there might be a moment that it cannot.
for further testing, I have a Web Scenario setup to montior the site, which does NOT fire the false alerts. This is only setup on the problematic server:
(the blips at the beggining where me testing)
I feel that if I could enable further debug logging on the simple check, I could track down the issue, but am stuck at this point. Any help much appreciated.