ZABBIX Forums - Zabbix Troubleshooting and Problems

Trigger for net.dns.get with macros

pvsa — Mon, 25 May 2026 15:22:42 GMT

Hi,

Zabbix team since years. Thanks for building reliable monitoring software open source!

I started to setup a DNS Integrity Check with an item like net.dns.get[1.1.1.1,{HOST.DNS},A,3,1] combined with preprocessing JSONPath "$.answer_section[0].rdata.a"
and a trigger last(/mails2/net.dns.get[1.1.1.1,{HOST.DNS},A,3,1],#1)<>"{HOST.IP}" - in the assumption that it would work like example 16 here https://www.zabbix.com/documentation...ers/expression
But this is not the case.

Latest data shows the right value, but the trigger does not alert correctly. I've tried text and character and even last and find function without success.
Another thing that surprises me, was that when importing a pre-generated template - i can use

Code:

triggers:
- uuid: e345742d3a1b4bbe8c2a83a4ac4db28a
expression: 'find(/Template DNS Integrity Check/net.dns.get[,{HOST.DNS},A,3,1],#1,"like","{HOST.IP}")=0'
name: 'DNS Mismatch [System DNS]: Forward lookup of {HOST.DNS} returned wrong IP'
opdata: 'Expected: {HOST.IP} | Got: {ITEM.LASTVALUE}'
priority: HIGH
description: 'System DNS resolved {HOST.DNS} to an IP that does not match {HOST.IP}.'

But i didn't find a way to configure this with the dialog.

zabbix server 7.4.6 and agent version 2 (7.4.2)

I'm was not sure it net.dns.get is already officially supported as it is not in the "Standard items" list from item key drop down. Of course i could use the net.dns.record but I think it's worth to ask.

BrP

AIX - cannot read response: timed out

FreddyBeach — Thu, 21 May 2026 15:39:52 GMT

I am starting to do a Proof of Concept with Zabbix, and have the server installed on RHEL 9.4 with a PostgreSQL DB.
20+ windows servers being monitored, no issues.

We have two AIX 7.2 LPAR monitored, with the 7.4.3-1 agent installed, with PSK no issues.

Attempting to add a third AIX LPAR, that is an Oracle DB server, using same setup as the previous two AIX LPAR, but keep getting the Availability in RED for ZBX.
Mousing over the icon we see, "Get value from agent failed: Cannot read response: timed out"

I have increased the Timeout value from 3 to 10 , but issue still remains.

Basic telnet to a port from the Zab Server to the LPAR to monitor is successful.

Any ideas what to try next to debug this issue?

Zabbix Agent: 7.4.3-1 on AIX 7.2
Zabbix Server 7.4.5 on RHEL 9.4

Query About Trigger Based On Strings

Jebastin_ — Mon, 11 May 2026 05:59:10 GMT

Hi Everyone,
I have created a template to monitor silverpeak device and the MIB provided by them gives only the alarm notifications (this means that the oids can be alarm description, alarm name, alarm source & so on and they have SNMP INDEXES in them - which is how I generate an alert if an IPSEC tunnel is down by matching values of each items). However, this is dynamic - when a new alert is generated on the device, there seems to be some change on the SNMP INDEXES which later causes zabbix to think the existing issue (which zabbix shows already is a problem and mail was sent) is a new alert and generates a new alert & closes the existing active alert.
This is creating noise and not good for a production environment.
The trigger rules I have created are based on string which the item (LLD) discovers via the alarm notification mib provided by silverpeak.

Sample trigger rule which I use;
((count(/SVPK/alarm.source[{#SNMPINDEX}],1h,"like","TO US")>=4 and count(/SVPK/alarm.name[{#SNMPINDEX}],1h,"like","tunnel_down")>=4)

Is there any workaround we can implement in the trigger rule or zabbix that will enable us to overcome the effect of dynamic SNMP INDEXES? I have tried multiple trigger rule config by monitoring for few hours and let alert being generated only if it persists during the entire time but it's no help as the base SNMPINDEX changes and zabbix thinks its a new alert as a whole.

Zabbix 7.4.8 and Cradlepoint Integration

daniel.lucio — Thu, 07 May 2026 14:25:31 GMT

Hello, I can't figure out how to make this work.
The log I have is always this:

268555:20260507:141849.664 [ NetCloud Manager API v2 ] ERROR: Please change {$NCM.CP.API_ID} macro to the proper value.

The plugin I installed is this
https://git.zabbix.com/projects/ZBX/...Ftags%2F7.4.10

I have tried different macro names: {$CP.API.ID}, {$CP.API.ID}, {$NCM.CP.API.ID}, {$NCM.CP.API_ID}
And I always get the same error.

After reading the template code, there is a condition that triggers that.

PHP Code:


if (params[key] === macro || params[key] === '') {
throw 'Please change ' + macro + ' macro to the proper value.';
}

I don't understand what I should do to bypass that?

BTW, after any macro change, I always run: /usr/sbin/zabbix_server -R config_cache_reload

Please assist.

Zabbix Repo for Ubuntu 26.04 LTS error

JuergenM — Wed, 06 May 2026 14:39:58 GMT

After adding the repo for Ubuntu 26.04. (zabbix-release_latest_7.0+ubuntu26.04_all.deb) apt update shows an error:
https://repo.zabbix.com/zabbix-tools/debian-ubuntu resolute Release
404 Not Found [IP: 178.128.6.101 443]

Is there a file missing or is it my fault?
Thanks, Juergen

Timeout override ignored?

Agnes — Wed, 06 May 2026 13:38:25 GMT

Hello,

I have a question regarding timeout behavior in Zabbix (version 7.4.8).

For one of my items, I have set a Timeout override to 7 seconds, however during a recent incident an alert was triggered due to a timeout occurring much earlier. In the logs I can see the following message:

"Cannot perform request: Operation timed out after 4271 milliseconds with 0 bytes received"

In practice, it looks like the connection is being terminated after ~4.2 seconds, even though the timeout should be 7 seconds.

Could someone explain what might be causing this?

Zabbix 7.0.26 update on ubuntu 22.04

steingat — Tue, 05 May 2026 21:55:17 GMT

Anyone else having issues with this build? Attempting to upgrade to it seems to kill the front end, either Apache2 service fails to start or PHP does not appear to function correctly.

APT does throw one error. Was able to revert back to 7.0.25 via APT downgrade commands and that seemed to fix the issue, also reverted a snapshot back to two days ago, install all updates except zabbix, and then tried the zabbix update again, same results.

Setting up zabbix-server-mysql (1:7.0.26-1+ubuntu22.04) ...
Setting up zabbix-sql-scripts (1:7.0.26-1+ubuntu22.04) ...
Setting up zabbix-frontend-php (1:7.0.26-1+ubuntu22.04) ...
Setting up zabbix-agent (1:7.0.26-1+ubuntu22.04) ...
Setting up zabbix-apache-conf (1:7.0.26-1+ubuntu22.04) ...
Installing new version of config file /etc/zabbix/apache.conf ...
realpath: '/etc/php/*/fpm/pool.d': No such file or directory
Processing triggers for man-db (2.10.2-1) ...
Log ended: 2026-05-05 20:32:24

Issues with zabbix 6.0.46

Callie — Tue, 05 May 2026 09:53:38 GMT

Basically reporting a bug.

We just patched some of our machines, and installed 6.0.46, whereas we previously had 6.0.45.

The zabbix-agent2 just broke, because an

ExecStartPre=/usr/sbin/zabbix_agent2 -T -c $CONFFILE

Was added to the systemd config, and the agent doesn't support that -T option, at least in 6.0, I see later major releases do.

I checked some still remaining 6.0.45, they don't have the line.