zabbix server detect the host network adapter

[feldman]

On the zabbix server

zabbix_get -s 192.168.47.63 -p 10050 -k net.if.discovery
{
"data":[]}


On the zabbix agent

zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf -t net.if.discovery
net.if.discovery [s|{
"data":[
{
"{#IFNAME}":"lo"},
{
"{#IFNAME}":"eth0"}]}]

A few machines in the network server side cannot detect the network card, does anybody know the reason