Package: zabbix-proxy-pgsql

"zabbix-proxy-pgsql" package binaries on CentOS:

/usr/sbin/zabbix_proxy_pgsql

You may install this package on CentOS with yum install zabbix-proxy-pgsql

"zabbix-proxy-pgsql" package binaries on Debian:

/usr/bin/zabbix_get /usr/sbin/zabbix_proxy

You may install this package on Debian with apt-get install zabbix-proxy-pgsql