When a not_supported item becomes supported(active), data is no longer collected

[symfrog]

Hi

It seems that when an item is not_supported and then later becomes supported(active) then zabbix no longer collects data for that item. The item will show as "active" but no data is collected for it. It is not shown in "Latest data" and when the zabcon cli tool is used to query the item, no data is also returned e.g.:

get item show=[itemid, key_, description, lastvalue, lastclock, nextcheck] hostids=10099 (Command issued after logging in with zabcon cli tool)

The item will have "--" for the lastvalue field.

but when I query it with zabbix_get e.g.:

zabbix_get -s agentip -k "key"

then the correct value is returned. The item is a zabbix active item and if the item has never been in a not_supported state then the values are collected with no problem. Anyone know how to fix this?

[nelsonab]

That is more related to the internal workings of Zabbix. Get item basically returns the reference from the items table via the api. When I get a chance I'll see what I can do about looking deeper into that.