Zabbix server has strange behavior. 2-3 times per day active zabbix agents can not connect to server. After few minutes server says no connection with remote agent. Network is ok. From zabbix server telnet to zabbix agent works. But from zabbix agent to zabbix server don't. Even local agent 127.0.0.1 can not send data. Log file hasn't something bad. How I can solve this problem?
Zabbix server installed in clean cloud machine with Ubuntu 18.04. (I tried different machines with same result)
Zabbix server version 5.0.3
Zabbix server installed in clean cloud machine with Ubuntu 18.04. (I tried different machines with same result)
Zabbix server version 5.0.3