The error "cannot write to IPC socket: Broken pipe" in Zabbix typically indicates that a communication channel between internal Zabbix processes has been unexpectedly severed. While your query includes "upd" (likely referring to "update" or an "upgrade"), this specific error often surfaces after a version upgrade, such as to Zabbix 6.0 or higher. Common Causes
Conclusion
Exhausted File Descriptors: The most frequent cause is reaching the system's limit for open files (ulimit). When Zabbix cannot open new internal connections, it results in broken pipes for existing IPC (Inter-Process Communication) attempts. zabbix cannot write to ipc socket broken pipe upd
Better (handles errors):
sudo systemctl daemon-reload sudo systemctl restart zabbix-server Use code with caution. Copied to clipboard Step 2: Update System-Wide Limits The error "cannot write to IPC socket: Broken