Hi,
I have the description for port utilization alert defined this way:
Interface Problem: Utilization OUT [[ $value ]]% (current: [[ printf
"round(port_out_bps{port_id='%s'} / ignoring(job) port_speed{port_id='%s'}
* 100, 0.1)" .Labels.port_id .Labels.port_id | query | first | value ]]%)
Sometimes when I have no data from metric port_out_bps I got this error as
description of alert:
"<first>: error calling first: first() called on vector with no elements"
Is there a way, how to check in template returned value and set fallback
value for current utilization to "unknown" ?
Thank you.
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