Check log files for Zabbix server and Mysql.
Increase trapper number in Zabbix configuration file and trapper timeout:Also check and increase number of connections in mysql configuration file:If that doesen’t help than put samo random deley on scripts/commands that are using zabbix_sender so that Zabbix server dosen’t recive all trapper data at the same time.
Increase trapper number in Zabbix configuration file and trapper timeout:
- StartTrappers=<increase gradually, start with 10>
- TrapperTimeout=300
- max_connections = <increase gradually, start with 300>