We're able to define the only one hostname/ip-adress into configuration:
DBHost - into Zabbix Server configuration
$DB['SERVER'] - into Frontend configuration

We want to have a posibility for defining multiple hostnames/ip-adresses to Zabbix everytime will connnecting to alive database in cases of failover and switchover

For example use full jdbc string for connection to PostgreSQL Patroni cluster

 jdbc:postgresql://127.0.0.1:1544,127.0.0.2:1544/dbname?targetServerType=master