[MINIFICPP-1901] Add agent identity to Prometheus metrics

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.13.0
• Assignee: Gábor Gyimesi
• Reporter: Gábor Gyimesi
• Created: 09/Aug/22 07:00
• Updated: 22/Sep/22 15:21
• Resolved: 22/Sep/22 15:21

Description

We should be able to monitor multiple agents from a single Prometheus instance. It is possible to add multiple agent addresses to a Prometheus config, but it is not possible to distinguish which metric belongs to which agent. We should add a label with the agent's identity to be able to filter metrics for a single agent.