Ensure max_execution_time is sufficient. Adjust Shared Memory
socket_buffer_size parameter in the Zabbix configuration files.: Check your zabbix_server.log for accompanying errors like failed to open log file: [24] Too many open files . zabbix cannot write to ipc socket broken pipe upd
But to fix root cause.
Temporarily disable TLS to see if the issue persists. Deep Troubleshooting Steps Zabbix Cannot Write to IPC Socket: Broken Pipe
Ensure max_execution_time is sufficient. Adjust Shared Memory
socket_buffer_size parameter in the Zabbix configuration files.: Check your zabbix_server.log for accompanying errors like failed to open log file: [24] Too many open files .
But to fix root cause.
Temporarily disable TLS to see if the issue persists. Deep Troubleshooting Steps