Select metric only if another does not exist

[Seitan]

Hello,
I'm trying to do a promql query to select only hosts, that don't have specific label on them.
For example, selecting metrics from hosts who DO have label (type=value) works:

metrics_name * on (hostname) another_metrics{type="value"}

Problem is when i try to do same select against hosts without that label:

metrics_name * on (hostname) (absent(another_metrics{type="value"}))

this query gives no results.

Is there any way to do such query?

Thank you

[Brian Candler]

On Tuesday, 4 August 2020 08:30:05 UTC+1, Seitan wrote:

I'm trying to do a promql query to select only hosts, that don't have specific label on them.

The empty value is equivalent to "no label":

metric{type=""}

will select timeseries 'metric' which have no label 'type'.

[Seitan]

Hello,

the problem is that the node has label with many values:

metric{type="one"},
metric{type="two"},

metric{type="three"}

I just need do query against those nodes, who has no

metric{type="two"}

[Sam Lee]

try metric{type != "two"} ?

在 2020年8月4日星期二 UTC+8下午3:30:05，Seitan写道：

[Aliaksandr Valialkin]

Try the following query:

metric_name unless on (hostname) another_metrics{type="value"}

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Best Regards,

Aliaksandr Valialkin, CTO VictoriaMetrics

[Seitan]

Seems to work correctly.

Thank you very much!

On Tuesday, August 4, 2020 at 5:57:30 PM UTC+3, Aliaksandr Valialkin wrote:

Try the following query:

metric_name unless on (hostname) another_metrics{type="value"}

On Tue, Aug 4, 2020 at 2:44 PM Sam Lee <lixq...@gmail.com> wrote:

try metric{type != "two"} ?

在 2020年8月4日星期二 UTC+8下午3:30:05，Seitan写道：

Hello,
I'm trying to do a promql query to select only hosts, that don't have specific label on them.
For example, selecting metrics from hosts who DO have label (type=value) works:

metrics_name * on (hostname) another_metrics{type="value"}

Problem is when i try to do same select against hosts without that label:

metrics_name * on (hostname) (absent(another_metrics{type="value"}))

this query gives no results.

Is there any way to do such query?

Thank you

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