Increase the limit for the Zabbix user (e.g., to 4096 or higher) in /etc/security/limits.conf .
The Zabbix error indicates an internal communication failure where a primary Zabbix process attempts to pass monitoring data to an internal subsystem—most commonly the Preprocessing Manager —that has already crashed, closed, or hung. This issue typically occurs during platform migrations or system upgrades (such as moving to Zabbix 6.0, 7.0, or 8.0 LTS) and can cause the zabbix_server process to repeatedly crash or stop executing tasks altogether. Root Causes of the Zabbix IPC Socket Broken Pipe Error
: Ensure your database isn't hitting connection limits, as this can cause Zabbix child processes to exit prematurely. Step 4: Verify Socket Permissions zabbix cannot write to ipc socket broken pipe upd
Increase the history cache size in zabbix_server.conf to buffer more data during DB spikes:
tries to send data to Process B (Reader) . Process B dies unexpectedly or closes the pipe. Increase the limit for the Zabbix user (e
Check your zabbix_server.log for earlier messages like cannot connect to preprocessing service or Connection refused .
Let me know those details and I can help you pinpoint the exact fix for your setup! Share public link Root Causes of the Zabbix IPC Socket Broken
The "cannot write to IPC socket: broken pipe" error in Zabbix is essentially a symptom of a process unable to hand off its workload to the next step in the monitoring pipeline. It often points to a chain reaction: To effectively resolve this:
If the error happens during configuration syncing, the CacheSize is likely the culprit. Step 3: Monitor Internal Zabbix Performance
A: Check if other limits are in effect. Some systems require both ulimit -n changes in /etc/security/limits.conf and LimitNOFILE in systemd. Also verify that your Zabbix version supports the limits you've set.
sudo systemctl daemon-reload sudo systemctl restart zabbix-server Use code with caution. Copied to clipboard