Metrics

• Prometheus collects and stores its metrics as time series data, i.e. metrics information is stored with the timestamp at which it was recorded, alongside optional key-value pairs called labels

Attributes

• Each metric has type and help attributes
• Help: description of what the metrics is
• Type: there are three types
  • Counter: How many times happened
  • Gauge: The current value now
  • Histogram: how long or how big

Examples

ALERTS{alertname=~"service_is_down.*", service=~".*"}