Zabbix Cannot Write To Ipc Socket Broken Pipe Upd -

Increase if needed:

Concise troubleshooting checklist (copy-paste)

Zabbix is only as fast as its backend database (MySQL, PostgreSQL, or Oracle). If your database undergoes table locks, slow queries, or runs out of connections, the History Syncer process will stall. When the History Syncer stalls, the IPC queues fill up, leading to crashes and broken pipes. 4. UDP/IPC Timeout Issues

cat /proc/$(pgrep -o zabbix_server)/limits | grep "Max open files" Use code with caution.

Before tweaking Zabbix configurations, check if the operating system terminated any Zabbix processes. zabbix cannot write to ipc socket broken pipe upd

If you just need to silence the flood of errors while investigating:

Look closely at the . If you have a large number of items waiting in the queue for more than 10 minutes, your server is backlogged.

If a process takes too long to respond to an IPC request, the master process may drop the connection, causing a broken pipe for the worker.

Raise the log level using runtime control (no restart required): If you just need to silence the flood

If a specific service (e.g., zabbix_preprocessing ) crashes or is killed by the OS (such as by the OOM killer), other processes trying to send it data will receive a "Broken pipe" error.

One particularly frustrating error that administrators face is:

, add the following to your Zabbix server service file (usually /lib/systemd/system/zabbix-server.service [Service] LimitNOFILE=10000 Use code with caution. Copied to clipboard 2. Monitor and Expand History Cache If the IPC error is linked to the preprocessing service , it may be due to a full history cache Check logs: Look for "History cache is full" Increase the HistoryCacheSize zabbix_server.conf file (e.g., from or higher). 3. Check for Service Crashes Look for the preprocessing manager

There are several reasons why the "cannot write to IPC socket: Broken pipe" error may occur in Zabbix when using UDP: or runs out of connections

Open your Zabbix server configuration file (usually /etc/zabbix/zabbix_server.conf ) and optimize the following parameters based on your environment size:

HistoryCacheSize=128M # Scale up based on NVPS (New Values Per Second) HistoryIndexCacheSize=32M Use code with caution. 4. System Resource Limits (OS Level)

Processes that actively reach out to devices to collect metrics.

If you see that your maximum queue size or segment sizes are being reached, you might need to increase kernel limits in /etc/sysctl.conf :