scrape_configs:
    # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
    - job_name: 'prometheus'
      # metrics_path defaults to '/metrics'
      # scheme defaults to 'http'.
      static_configs:
      - targets: ['localhost:9090']
  
    - job_name: 'somewhere'
      consul_sd_configs:
        - server: 'somewhere:8500'
      relabel_configs:
        - source_labels: [__meta_consul_tags]
          regex: .*,some_label,.*
          action: keep
        - source_labels: [__meta_consul_service]
          target_label: job


  {
    "service": {
      "id": "some_id",
      "name": "node_exporter",
      "tags": ["some_label"],
      "address": "172.26.2.112",
      "meta": {
        "infrastructure": "some_infr",
        "site": "Some Site"
      },
       "port": 9100
          }
  }

kubectl taint nodes node-001 maintenance-mode=:NoExecute-

     affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: production
                operator: In
                values:
                - "true"
      tolerations:
      - key: "maintanance-node"
        operator: "Exists"
        effect: "NoSchedule"
      - key: "maintanance-node"
        operator: "Exists"
        effect: "NoExecute"

https://www.robustperception.io/mapping-iostat-to-the-node-exporters-node_disk_-metrics

(node_memory_MemTotal_bytes{instance="172.26.2.99:9100"} - node_memory_MemFree_bytes{instance="172.26.2.99:9100"} - node_memory_Cached_bytes{instance="172.26.2.99:9100"})/node_memory_MemTotal_bytes{instance="172.26.2.99:9100"}*100

100 - (avg by (instance) (irate(node_cpu_seconds_total{mode="idle"}[1m])) * 100)

100 - (avg by (instance) (irate(node_cpu_seconds_total{mode="idle",instance="172.25.0.1*:9100"}[1m])) * 100)

(node_filesystem_size_bytes{mountpoint="/",instance="172.25.0.11:9100",device="/dev/md126"} - node_filesystem_free_bytes{mountpoint="/",instance="172.25.0.11:9100",device="/dev/md126"})/node_filesystem_size_bytes{mountpoint="/",instance="172.25.0.11:9100",device="/dev/md126"}*100

(max(avg(irate(node_disk_io_time_ms[10m])) by (instance, device)) by (instance))/10