We are running the node-exporter in containers. To quickly identify on which host each node-exporter is running, I created a metric that looks like this: host{host="$HOSTNAME",node="$CONTAINER_ID"} 1
I'm looking for a way to extract the hostname in host=
and create a label for each node-exporter instance as a hostname label. I tried numerous configurations and none seem to work. Current prometheus config looks like this:
scrape_configs:
- job_name: 'node'
scrape_interval: 10s
scrape_timeout: 5s
metrics_path: /metrics
scheme: http
dns_sd_configs:
- names:
- tasks.master-nodeexporter
refresh_interval: 30s
type: A
port: 9100
relabel_configs:
- source_labels: ['host']
regex: '"(.*)".*'
target_label: 'hostname'
replacement: '$1'