Add Custom Labels

[harsha-chamarthi]

Add support for custom labels to uniquely identify the source of metrics if you are running multiple Grafana Agents across multiple machines

[nleiva]

Could you provide a config example with these labels?

[harsha-chamarthi]

https://grafana.com/docs/agent/latest/configuration/metrics-config/#global_config

A list of static labels to add for all metrics.

external_labels:
{ : }

Add a label, for example environment: dev to differentiate between different environments

[nleiva]

Thanks. The current config looks like this:

prometheus:
  wal_directory: /tmp/grafana-agent-wal
  global:
    scrape_interval: 15s
  configs: null

Maybe we can make it something like:

prometheus:
  wal_directory: /tmp/grafana-agent-wal
  global:
    scrape_interval: 15s
external_labels:
  { environment : {{ grafana_agent_env | default('dev') }} }
  configs: null

And expose the variable grafana_agent_env. What do you think?

We also need to be mindful of users that don't want any labels.

[harsha-chamarthi]

Yes, this config looks good to me. Can we maybe use a flag(true or false) like used to install unzip here? to enable disable external_labels.

[kmf]

what is required for this to be added?

[nleiva]

Time and/or a PR. Thanks