topic Re: custom metric events in Dashboarding

How to exclude a specific disk on a single host in a custom metric event?

Vijayt — Wed, 11 Feb 2026 12:16:19 GMT

I have custom metric event with filtering host multiple conditions for disk event .

i want to exclude one disk for one server. host abc mountpoint /disk1

builtin:host.disk.usedPct:filter(and(
or(in("dt.entity.host",entitySelector("type(host),osType(~"LINUX~")"))),
or(not(in("dt.entity.host",entitySelector("type(host),tag(~"team:bx_unix~")"))))
)):splitBy("dt.entity.host","dt.entity.disk")

how can i achieve that . one way is to tag disk and exclude disk in filter .

but how can i separate in metric key . i can filter via tag but i can filter only via host tag not disk ?

Re: custom metric events

rastislav_danis — Thu, 29 Jan 2026 12:44:04 GMT

you can try (show all except specific disk "diskname" on host "hostname":

builtin:host.disk.usedPct:filter(or(not(in("dt.entity.disk",entitySelector("type(disk),entityName.equals(~"/diskname~")"))),not(in("dt.entity.host",entitySelector("type(host),entityName.equals(~"hostname~")")))))::splitBy("dt.entity.host","dt.entity.disk")

btw, this is not DQL query, but classic metric query

Re: custom metric events

Vijayt — Thu, 29 Jan 2026 12:49:12 GMT

yes i can exclude it by tagging disk and filter via disk tag . but is there any option available in "metric key" type events with entity filter. The reason why i am asking is by this classic query my "metric selector " events limits exceeded

Re: custom metric events

rastislav_danis — Thu, 29 Jan 2026 13:12:13 GMT

if you are forced to use metric selector metric event, you can use dimension filter to exclude disk from event definition

Re: custom metric events

Vijayt — Thu, 29 Jan 2026 13:17:41 GMT

yeah good idea. but dimention filter does have tag one . it required exact name/id equal / not equal ones

Re: custom metric events

rastislav_danis — Thu, 29 Jan 2026 13:51:33 GMT

there is a lot of limitations in metric key defined metric events..