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12.4.

12.4.1.
링크 복사

  1. kind: Service
apiVersion: v1
metadata:
  name: node-exporter-service
    1 
    
  namespace: dynamation
    2 
    
  labels:
    servicetype: metrics
    3 
    
spec:
  ports:
    - name: exmet
    4 
    
      protocol: TCP
      port: 9100
    5 
    
      targetPort: 9100
    6 
    
  type: ClusterIP
  selector:
    monitor: metrics
    7
    1
    2
    3
    4
    5
    6
    7 

  2. $ oc create -f node-exporter-service.yaml

12.4.2.
링크 복사

  2. $ wget https://github.com/prometheus/node_exporter/releases/download/v1.3.1/node_exporter-1.3.1.linux-amd64.tar.gz
     

  3. $ sudo tar xvf node_exporter-1.3.1.linux-amd64.tar.gz \
    --directory /usr/bin --strip 1 "*/node_exporter"
     

  4. [Unit]
Description=Prometheus Metrics Exporter
After=network.target
StartLimitIntervalSec=0

[Service]
Type=simple
Restart=always
RestartSec=1
User=root
ExecStart=/usr/bin/node_exporter

[Install]
WantedBy=multi-user.target
     

  5. $ sudo systemctl enable node_exporter.service
$ sudo systemctl start node_exporter.service
     

  • $ curl http://localhost:9100/metrics
     

    go_gc_duration_seconds{quantile="0"} 1.5244e-05
go_gc_duration_seconds{quantile="0.25"} 3.0449e-05
go_gc_duration_seconds{quantile="0.5"} 3.7913e-05

12.4.3.
링크 복사

  1. spec:
  template:
    metadata:
      labels:
        monitor: metrics

12.4.3.1.
링크 복사

  1. $ oc get service -n <namespace> <node-exporter-service>
     

  2. $ curl http://<172.30.226.162:9100>/metrics | grep -vE "^#|^$"
     

    node_arp_entries{device="eth0"} 1
node_boot_time_seconds 1.643153218e+09
node_context_switches_total 4.4938158e+07
node_cooling_device_cur_state{name="0",type="Processor"} 0
node_cooling_device_max_state{name="0",type="Processor"} 0
node_cpu_guest_seconds_total{cpu="0",mode="nice"} 0
node_cpu_guest_seconds_total{cpu="0",mode="user"} 0
node_cpu_seconds_total{cpu="0",mode="idle"} 1.10586485e+06
node_cpu_seconds_total{cpu="0",mode="iowait"} 37.61
node_cpu_seconds_total{cpu="0",mode="irq"} 233.91
node_cpu_seconds_total{cpu="0",mode="nice"} 551.47
node_cpu_seconds_total{cpu="0",mode="softirq"} 87.3
node_cpu_seconds_total{cpu="0",mode="steal"} 86.12
node_cpu_seconds_total{cpu="0",mode="system"} 464.15
node_cpu_seconds_total{cpu="0",mode="user"} 1075.2
node_disk_discard_time_seconds_total{device="vda"} 0
node_disk_discard_time_seconds_total{device="vdb"} 0
node_disk_discarded_sectors_total{device="vda"} 0
node_disk_discarded_sectors_total{device="vdb"} 0
node_disk_discards_completed_total{device="vda"} 0
node_disk_discards_completed_total{device="vdb"} 0
node_disk_discards_merged_total{device="vda"} 0
node_disk_discards_merged_total{device="vdb"} 0
node_disk_info{device="vda",major="252",minor="0"} 1
node_disk_info{device="vdb",major="252",minor="16"} 1
node_disk_io_now{device="vda"} 0
node_disk_io_now{device="vdb"} 0
node_disk_io_time_seconds_total{device="vda"} 174
node_disk_io_time_seconds_total{device="vdb"} 0.054
node_disk_io_time_weighted_seconds_total{device="vda"} 259.79200000000003
node_disk_io_time_weighted_seconds_total{device="vdb"} 0.039
node_disk_read_bytes_total{device="vda"} 3.71867136e+08
node_disk_read_bytes_total{device="vdb"} 366592
node_disk_read_time_seconds_total{device="vda"} 19.128
node_disk_read_time_seconds_total{device="vdb"} 0.039
node_disk_reads_completed_total{device="vda"} 5619
node_disk_reads_completed_total{device="vdb"} 96
node_disk_reads_merged_total{device="vda"} 5
node_disk_reads_merged_total{device="vdb"} 0
node_disk_write_time_seconds_total{device="vda"} 240.66400000000002
node_disk_write_time_seconds_total{device="vdb"} 0
node_disk_writes_completed_total{device="vda"} 71584
node_disk_writes_completed_total{device="vdb"} 0
node_disk_writes_merged_total{device="vda"} 19761
node_disk_writes_merged_total{device="vdb"} 0
node_disk_written_bytes_total{device="vda"} 2.007924224e+09
node_disk_written_bytes_total{device="vdb"} 0

12.4.4.
링크 복사

  1. apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  labels:
    k8s-app: node-exporter-metrics-monitor
  name: node-exporter-metrics-monitor
    1 
    
  namespace: dynamation
    2 
    
spec:
  endpoints:
  - interval: 30s
    3 
    
    port: exmet
    4 
    
    scheme: http
  selector:
    matchLabels:
      servicetype: metrics
    1
    2
    3
    4 

  2. $ oc create -f node-exporter-metrics-monitor.yaml

12.4.4.1.
링크 복사

  1. $ oc expose service -n <namespace> <node_exporter_service_name>
     

  2. $ oc get route -o=custom-columns=NAME:.metadata.name,DNS:.spec.host
     

    NAME                    DNS
node-exporter-service   node-exporter-service-dynamation.apps.cluster.example.org
     

  3. $ curl -s http://node-exporter-service-dynamation.apps.cluster.example.org/metrics
     

    go_gc_duration_seconds{quantile="0"} 1.5382e-05
go_gc_duration_seconds{quantile="0.25"} 3.1163e-05
go_gc_duration_seconds{quantile="0.5"} 3.8546e-05
go_gc_duration_seconds{quantile="0.75"} 4.9139e-05
go_gc_duration_seconds{quantile="1"} 0.000189423

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