Sometimes monitoring something proceeds without a hitch, sometimes it just won't work.
Q: I added a host or item, but I don't see it in Monitoring | Latest data.
A: It most likely has not received any data. Hosts without any data do not appear in the monitoring section.
Q: I can see my host in Latest data, and new values are coming in—but it is missing in Monitoring | Overview.
A: Overview is probably set to display triggers—verify that the host has triggers configured. Hosts without triggers are not displayed in the trigger mode.
Q: I am trying to monitor a host using Zabbix agent checks, but it doesn't work.
A: Common reasons why Zabbix agent items won't work include: