absent(nonexistent{job="myjob",instance=~".*"}) why miss label instance

[5765...@qq.com]

absent(nonexistent{job="myjob",instance=~".*"}) why miss label instance？

[Brian Candler]

1. There are an infinite number of possibilities which could match instance=~".*"

2. The result of that query is vector of timeseries.  Each timeseries must have concrete labels like foo="bar", whereas foo=~"bar|baz" is a PromQL querying construct only.  That is, it's not a label, it's an expression that selects labels.

[5765...@qq.com]

Our requirement is the alarm for up metric, using absent(up{job="myjob",instance=~ ".* "}). but you won't get the instance information. Do you have any other suggestions?

在 2020年7月20日星期一 UTC+8下午2:29:22，Brian Candler写道：

[Julien Pivotto]

up offet 1h unless up

That would fire for an hour with instance label.

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[5765...@qq.com]

What  mean?

在 2020年7月20日星期一 UTC+8下午2:59:06，Julien Pivotto写道：

up offet 1h unless up

That would fire for an hour with instance label.

Le lun. 20 juil. 2020 à 08:47, 5765...@qq.com <5765...@qq.com> a écrit :

Our requirement is the alarm for up metric, using absent(up{job="myjob",instance=~ ".* "}). but you won't get the instance information. Do you have any other suggestions?

在 2020年7月20日星期一 UTC+8下午2:29:22，Brian Candler写道：

1. There are an infinite number of possibilities which could match instance=~".*"

2. The result of that query is vector of timeseries.  Each timeseries must have concrete labels like foo="bar", whereas foo=~"bar|baz" is a PromQL querying construct only.  That is, it's not a label, it's an expression that selects labels.

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