add custom label to node_systemd_unit_state metric

[Richie]

I am trying to add a label to the mentioned metric from the grafana agent config.  I have tried the static label config, the relabel configs and metric_relabel_configs blocks but no luck.

example:

          relabel_configs:
         - source_labels: [__address__]
           target_label: group
           replacement: "group1"

The new label shows up on many of the metrics but for whatever reason it doesn't show up in node_systemd_unit_state metric.

The reasoning for this is for alerting so that I can filter groups of nodes have their alerts  to go specific contacts.

[Brian Candler]

relabel_configs are per scrape job.  It appears that you've applied this config to the job called "agent" but not to the job called "integrations/node_exporter"

[Richie]

Brian, thanks for the hint,  pasting working excerpt below

integrations:
 node_exporter:
   enabled: true
   enable_collectors:
     - systemd

   relabel_configs:
     - source_labels: [__address__]
       target_label: group
       replacement: "group1"

[Brian Candler]

Aside: I believe there is no need for source_labels here, since you're not matching on them.

     - target_label: group
       replacement: group1

should be sufficient. ("action: replace" is default)

[Richie]

yes that worked, thanks