Prometheus Labels
Prometheus identifies each datum with a collection of labels, each of which has the form key=value.
The key and value of a label can originate at any stage of the monitoring data pipeline: client, realm server, tibpromgateway adapter, or Pushgateway.
A label that originates in either a client or a realm server is a straightforward transformation of a field in the monitoring message that carried the datum (see Fields of Monitoring Data Messages). However, not every field of the monitoring message becomes a label.
The following table presents additional label keys, which originate either in the tibpromgateway adapter or in the Pushgateway.
| Key | Description |
|---|---|
| exported_job | The realm server that published the datum.
See the --source-name parameter in tibpromgateway Command Line Reference. |
| job | The intermediary source that scraped the datum.
The value is the job_name in the Prometheus scrape configuration. |
| instance | The scraped target address.
The default value is the address of the Pushgateway, in the form host:port. |