Zabbix Cannot Write To Ipc Socket Broken Pipe Upd Review

If the error persists and you are certain configs are correct, manually clear stale IPC resources.

WARNING: Stop Zabbix server first.

systemctl stop zabbix-server
# Find all IPC objects owned by zabbix user
ipcs -m | grep zabbix | awk 'print $2' | xargs -n1 ipcrm -m
ipcs -s | grep zabbix | awk 'print $2' | xargs -n1 ipcrm -s
ipcs -q | grep zabbix | awk 'print $2' | xargs -n1 ipcrm -q
# Restart
systemctl start zabbix-server

This forces Zabbix to recreate all shared memory segments and message queues from scratch. zabbix cannot write to ipc socket broken pipe upd

tail -n 500 /var/log/zabbix/zabbix_server.log | grep -B 5 -A 5 "broken pipe"

Often, the broken pipe error follows more specific errors like:

Has anyone successfully fixed Zabbix “cannot write to IPC socket: broken pipe” specifically for UDP items?
Could this be related to the way Zabbix handles non-blocking UDP sockets or a known bug in certain versions? If the error persists and you are certain

Any help is appreciated. 🙏

Zabbix relies heavily on IPC (Inter-Process Communication) sockets. These are internal pathways that allow the main Zabbix server process to talk to pollers, trappers, and the database syncers. This forces Zabbix to recreate all shared memory

When you see "Broken pipe," it means one Zabbix process (the sender) attempted to write data to the socket, but the receiving end (the reader) had already closed the connection or crashed.

It is the computing equivalent of talking into a phone after the person on the other end has already hung up.

The Timeout parameter controls how long Zabbix waits for internal operations.

Timeout=30

If your database is slow or your network is congested, increase to Timeout=30 or even Timeout=60 (seconds). Be cautious—very high timeouts can hide underlying issues.