MySQL/Percona, MariaDB, PostgreSQL (including TimescaleDB) and Oracle (up to Zabbix 7.0)
Each Zabbix Proxy has a database. Supported databases are SQLite, MySQL and PostgreSQL
systemctl start zabbix-proxy
systemctl stop zabbix-proxy
systemctl restart zabbix-proxy
systemctl status zabbix-proxy
/etc/zabbix/zabbix_proxy.conf