Hi Julius,
Thanks for your prompt response.
{{ with query "time()" }}{{ . | first | value }}{{ end}}
This expression is exactly what I need.
And I wanna learn how to assemble such an expression. After searching
through this document template <https://golang.org/pkg/text/template/> ,
still no clue about these in the expression you wrote: query, first, value.
Could you give me an advice?
在 2020年5月20日星期三 UTC+8下午3:12:51，Julius Volz写道：
>
> Not sure what exactly your use case is, but if you just want the current
> (at the time of alert evaluation) Unix timestamp in an annotation, you
> should be able to do:
>
> {{ with query "time()" }}{{ . | first | value }}{{ end}}
>
> Note that the "Alert" struct on the Alertmanager templating side will also
> have timestamp fields on it that tell you when an alert first started
> firing, and when it will expire if it's no longer sent from Prometheus:
>
> https://prometheus.io/docs/alerting/notifications/#alert
>
>
>
> On Wed, May 20, 2020 at 5:59 AM zichen chuh <ziche...@gmail.com
> <javascript:>> wrote:
>
>> I went through documents given by prometheus website and didn't find a
>> clue.
>>
>> From alerting_rules
>> <https://prometheus.io/docs/prometheus/latest/configuration/alerting_rules/#templating>
>> ,
>> only 3 variables are available : $lables, $externalLabels, $value.
>>
>> Thanks in advance.
>>
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>>
>
>
> --
> Julius Volz
> PromLabs - promlabs.com
>
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