func getConfig() map[string]interface{} {
	return map[string]interface{}{
		"module":     "postgresql",
		"metricsets": []string{"database"},
		"hosts":      []string{postgresql.GetEnvDSN()},
	}
}
func getConfig() map[string]interface{} {
	return map[string]interface{}{
		"module":     "postgresql",
		"metricsets": []string{"bgwriter"},
		"hosts":      []string{postgresql.GetEnvDSN()},
		"username":   postgresql.GetEnvUsername(),
		"password":   postgresql.GetEnvPassword(),
	}
}