Write To Ipc Socket Broken Pipe Upd | Zabbix Cannot

: If the logs show cannot send data to preprocessing service , the preprocessing worker processes might be stuck or have crashed.

Key causes

StartDiscoverers=10

Are you seeing this on a , a Proxy , or an Agent ? Share public link zabbix cannot write to ipc socket broken pipe upd

If the error occurs during heavy loads or updates, the default timeout might be too aggressive.

(most modern Linux systems):

Ensure max_execution_time is sufficient. Adjust Shared Memory : If the logs show cannot send data

Add LimitNOFILE=4096 (or higher) to your Zabbix Server systemd unit file to ensure the service respects the new limit.

Edit the Zabbix service file (e.g., /lib/systemd/system/zabbix-server.service ) and add or update the following line: LimitNOFILE=4096 Use code with caution. Copied to clipboard

Temporarily disable TLS to see if the issue persists. Deep Troubleshooting Steps Copied to clipboard Temporarily disable TLS to see

Ensure the database schema was fully updated and that all Zabbix components (server, agents, proxies) are compatible.

By default, many Linux distributions limit the number of open files per user ( ulimit -n ) to 1024 . High-capacity Zabbix environments easily breach this threshold, crashing the preprocessing daemon.