ZabbixTune — A pgtune-style configurator for zabbix_server.conf

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ZabbixTune — A pgtune-style configurator for zabbix_server.conf

If you've ever set up a Zabbix server in production, you know the problem:
the default zabbix_server.conf is not production-ready.

StartPollers=5, CacheSize=32M, ValueCacheSize=8M — these defaults work
for a lab, but they will hurt your performance in production with hundreds
or thousands of hosts.

The problem with default Zabbix server configuration

Most Zabbix administrators tune their server configuration by trial and
error, or by copying values from blog posts that don't match their
infrastructure. There was no tool to calculate the right parameters based
on your actual setup — until now.

Introducing ZabbixTune

ZabbixTune is an open source, browser-based configurator that generates
an optimized zabbix_server.conf based on your infrastructure.

Inspired by pgtune (the popular PostgreSQL configurator), ZabbixTune
asks you a few questions about your setup and generates the full
configuration file with only the modified parameters uncommented.

Features

MySQL, PostgreSQL and PostgreSQL + TimescaleDB support
Active/passive proxy mode with correct NVPS calculation
Full zabbix_server.conf generated from the official Zabbix template
Only modified variables are uncommented — easy to review and apply
Proxy-aware NVPS calculation — distinguishes collection vs ingestion
100% client-side — single HTML file, no dependencies, no data sent

How it works

Select your database type
Enter your infrastructure — number of hosts, items per host, collection interval, CPU cores, RAM
Toggle the collection types you use — SNMP, ICMP, HTTP, IPMI, VMware
Configure your proxies — active or passive mode, number of proxies
Get your optimized zabbix_server.conf instantly

The tool calculates StartPollers, StartPreprocessors, StartDBSyncers,
CacheSize, HistoryCacheSize, ValueCacheSize, TrendCacheSize and all
other key parameters based on your actual NVPS (New Values Per Second).

Why NVPS matters

NVPS is the key metric for Zabbix server performance. The tool correctly
separates:

Collection NVPS — what your pollers actually collect
Ingestion NVPS — what your backend must write to the database

When using proxies, the backend doesn't collect — it only ingests data
sent by proxies. This changes the sizing of pollers, trappers,
preprocessors and caches significantly.