A user has a Zabbix agent that collects the used disk space information on a host. The item interval is one minute: However, the user complains that Zabbix fails to collect to data appropriately as the graph has empty areas with occasional dots: In Zabbix implementations with very high NVPS (new values per second) this […]
All the information on this page is gathered from the official Zabbix documentation about the protocols and the upgrade notes. I’m using this information to assist with the Zabbix protocol dissector development in Wireshark, thus not all possible protocol change details will be documented here but mostly only those that affect the dissector. Server-proxy data […]
One of the features of Zabbix proxy is that it can buffer the collected monitoring data if connectivity to Zabbix server is lost. In this post I will show it happening, using packet capture, or packet analysis. Zabbix setup and capturing Zabbix proxy traffic This is the setup in this demo: For simplicity, the agent […]
When configuring monitoring and using templates in Zabbix you often see low-level discovery (LLD) used for finding out the monitored components or features of a host. In this post I will explain how user macros and regular expressions are used in LLD for filtering the discovery results. I’m using the Network Generic Device by SNMP […]
Let’s see how the Zabbix active agent autoregistration works in the communication. I have configured the Zabbix agent (version 6.2.3) on the Linux host at 192.168.7.17 with this configuration: ServerActive=192.168.7.15 Hostname=Test-agent After restarting the agent, the Zabbix server (version 6.2.3) at 192.168.7.15 logged immediately in /var/log/zabbix/zabbix_server.log: cannot send list of active checks to “192.168.7.17”: host […]
Zabbix API is the way to go when you need to manage Zabbix configurations or get data from Zabbix programmatically. For Python applications one of the community-based libraries is PyZabbix. Note: There is also a package called py-zabbix. That is a different one, not handled in this post. In this post I’ll show: How to […]
The current Long Term Support (LTS) version series of Zabbix is 6.0, released in February 2022. The previous LTS version was 5.0, released in May 2020. Many of us are upgrading the Zabbix installation from 5.0 to 6.0 series these days, here is one catch to be aware of. In 5.0, when viewing graphs of […]
This is a tag-specific summary from the official Zabbix guidelines documentation, based on the situation as of Zabbix 6.0 LTS. Note: “Please note that this model might become enforced in the future Zabbix releases. Templates that do not follow specified rules will need to be updated.“ Tag name and value format lowercase only allowed characters: […]
In the series “why wouldn’t I put this out public instead of just saving it to my own notes”: Moving the Zabbix database to a new database server. Old server: Debian Linux 9, running MariaDB 10.1.48 New server: Debian Linux 11, running MariaDB 10.5.12 (from Debian packaging) Zabbix (5.0.19 LTS) frontend is running on Apache […]
In order to handle SNMP traps in Zabbix you need to configure your server to receive the traps. Here are the steps, tested with Zabbix 5.4 on Debian Linux 10 (Buster), assuming Zabbix server has already been installed from the official repository: (Note: Long commands and paths below can appear split incorrectly, so be careful […]