zabbix_ynh/conf/etc_zabbix_web_zabbix.conf.php

<?php
// Zabbix GUI configuration file.
global $DB;

$DB['TYPE']     = 'MYSQL';
$DB['SERVER']   = 'localhost';
$DB['PORT']     = '0';
$DB['DATABASE'] = '__DB_NAME__';
$DB['USER']     = '__DB_USER__';
$DB['PASSWORD'] = '__DB_PWD__';

// Schema name. Used for IBM DB2 and PostgreSQL.
$DB['SCHEMA'] = '';

$ZBX_SERVER      = 'localhost';
$ZBX_SERVER_PORT = '10051';
$ZBX_SERVER_NAME = 'zabbix-server';

$IMAGE_FORMAT_DEFAULT = IMAGE_FORMAT_PNG;