The error "cannot write to IPC socket: Broken pipe" in Zabbix typically indicates that a Zabbix process (like the server or proxy) attempted to communicate with a internal service (like the preprocessing manager) that had already closed its connection. Core Causes

Causes of the Issue

  • Update the Zabbix server configuration:

Solution 1: Optimize Zabbix Cache Settings (Most Common Fix)

The broken pipe often results from the History Syncer or Configuration Syncer failing due to cache exhaustion.

When Zabbix encounters the "cannot write to IPC socket: broken pipe" error, you may notice the following symptoms: