prometheusgrafanapromqlgrafana-templatinggrafana-variable

Grafana dashboard Variables: how to extract a label value when the metric equal to a value

I have a metric to monitor the health status of microservices called nodejs_microservice_health_status.

I want to create a variable failedmicroservice which extracts the value of the service label of the metrics when nodejs_microservice_health_status equals to 0.

The PromQL query nodejs_microservice_health_status == bool 0 returns all the items equals to 0, but when I tried to set the Query of the variable to label_values({nodejs_microservice_health_status == bool 0}, service), enter image description here

I got the following error:

enter image description here

Do anyone knows how to do this?

Solution

  • Use the following values,

    Query:

    query_result(nodejs_microservice_health_status==0)

    Regex:

    /.*service=\"([^\"]+)\".*/