Torjus Håkestad
23e561cf49
Add a `hostname` label to all Prometheus scrape targets, making it easy
to query all metrics for a host without wildcarding the instance label.
Example queries:
- {hostname="ns1"} - all metrics from ns1
- node_cpu_seconds_total{hostname="monitoring01"} - specific metric
For external targets (like gunter), the hostname is extracted from the
target string.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>