external_labels from prometheus not able to use as filter in Grafana Dashboard variables

[Pavan Vasisht]

Hi,

Using the helm(Version:"v3.2.4", GitCommit:"0ad800ef43d3b826f31a5ad8dfbb4fe05d143688") - stable/prometheus was configuring external_label so that this can be used as parameter(drop-down value) to filter in grafana dashbaord. The external_label is getting propagated across all the metrics. Manually setting the label and fetching metrics works, but the label when tried to set as variable, no luck.

Please refer the github issue which I had raised for Grafana, as per the suggestion asking here.

Some backgroud -

Using thanos side car within prometheus server to push the metrics to s3 bucket and fetching the stored metrics into grafana via thanos querier.

Thanks

Pavan

[Ben Kochie]

This sounds like a `label="$var"` vs `label=~"$var"` issue. Grafana sometimes formats the variable as a regexp, so you need to use `=~` for it to work.

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