failed: first network error, wait for 30 seconds

[Tek Chand]

Hello Team,

We are using Zabbix from last 3 year and everything is working fine. But today suddenly our agent showing unreachable and resolved automatically. We have integrated around 130 agent with server.

Suppose we are facing issue on agent A,B,C now and next moment it will resolved automatically and will start on agent D,E,F etc.

We are getting below error in zabbix server log:

failed: first network error, wait for 30 seconds

We are using the below setting in zabbix-server.conf file:

StartPollers=80
StartPollerUnreachable=20
StartPingers=10
StartTrappers=20
StartDBSyncers=8

We have checked the queue and zabbix server graph also and everything is looking fine. We have attached the screenshot for zabbix graph.

Can you please help us on this issue?

Any help will be appriciated.

Thank you