Using Victoria Metrics with Grafana Label Legend does not work with Prometheus Labels

[BenB196]

I am testing out Victoria Metrics as a long term storage solution for Prometheus, however I have run into a weird bug, with Grafana Legends, where Prometheus labels are not working properly.

The below picture is a graph which I made, and each line should be a different interface. I use the Grafana Legend to be filled out with the ifName label. However, if you look at the graph you can see that the ifName is not set correctly.

I know that everything works correctly on the query and Grafana end, because if I switch the data source to use Prometheus directly, I get the correct result.

Versions of Software:

Grafana: 6.0.2 - Docker Container
Prometheus: 2.8.1 - Docker Container
Victoria Metrics: 1.12.3 Single-node - Docker Container

[valyala]

@BenB196 , thanks for the bug report. Could you remove {{ifName}} from the Legend field in Grafana for both VictoriaMetrics and Prometheus datasources and attach the resulting screenshots? In this case Grafana should display all the labels for the returned time series. This should help understanding the difference in these labels between Prometheus and VictoriaMetrics.

[BenB196]

@valyala Please see the screenshots below:

First screenshot is of VictoriaMetrics

Second screenshot is of Prometheus

[valyala]

Confirmed the bug. Will be fixed in the next release.

[valyala]

@BenB196 , could you confirm the bug has been fixed in v1.12.4?

[BenB196]

@valyala I have tested v1.12.4 and this issue is now fixed. Thank you for assisting with this problem.

[valyala]

@BenB196 , thank you for reporting the bug and verifying the bugfix.