Prometheus configuration file to scrape OpenStack instances that belong to Senlin clusters

prometheus.yml

global:
 scrape_interval: 15s
scrape_configs:
 - job_name: 'prometheus'
   scrape_interval: 5s
   static_configs:
     - targets: ['localhost:9090']
 # Scrape OpenStack instances
 - job_name: 'openstack'
   openstack_sd_configs:
      - identity_endpoint: http://10.0.20.10/identity
        region: RegionOne
        username: admin
        project_name: admin
        domain_name: default
        password: secretsecret
        role: instance
   relabel_configs:
      # Keep only active instances
      - source_labels: [__meta_openstack_instance_status]
        action: keep
        regex: ACTIVE
      # Keep Senlin instances that have cluster_id
      - source_labels: [__meta_openstack_tag_cluster_id]
        action: keep
      # Update the scraping port if required
      - source_labels:
        - __address__
        action: replace
        regex: ([^:]+)(?::\d+)
        replacement: $1:9100
        target_label: __address__
        
rule_files:
  - alert.rules.yml

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      - 'localhost:9093'