Ho beha leihlo li-postgres ka hare ho Openshift

Dumelang, baahi ba Habr!

Kajeno ke batla ho u joetsa hore na re hlile re batla ho beha leihlo li-postgres le mekhatlo e meng e 'maloa ka har'a sehlopha sa OpenShift le hore na re e entse joang.

Monyako ba ne ba ena le:

• Openshift
• helmete
• Prometheus

Ho sebetsa ka sesebelisoa sa java, ntho e 'ngoe le e' ngoe e ne e le bonolo ebile e hlakile, kapa e nepile haholoanyane:

1) Ho eketsa ho haha.nyala

 implementation "io.micrometer:micrometer-registry-prometheus"

2) Matha prometheus ka tlhophiso

 - job_name: 'job-name'
    metrics_path: '/actuator/prometheus'
    scrape_interval: 5s
    kubernetes_sd_configs:
    - role: pod
      namespaces:
        names: 
          - 'name'

3) Ho eketsa pontšo ho Grafana

Ntho e 'ngoe le e' ngoe e ne e le bonolo ebile e le prosaic ho fihlela nako e fihla ea ho lekola metheo e haufi le sebaka sa rona sa mabitso (e, sena se mpe, ha ho motho ea etsang sena, empa ho etsahala lintho tse fapaneng).

E sebetsa joang?

Ho phaella ho pod e nang le li-postgres le prometheus ka boeona, re hloka mokhatlo o mong hape - morekisi.

Morekisi kantle ho mohopolo o hlakileng ke moemeli ea bokellang litekanyetso ho tsoa ts'ebelisong kapa ho seva. Bakeng sa morekisi oa postgres, e ngotsoe ho Go, e sebetsa ka molao-motheo oa ho tsamaisa mangolo a SQL ka har'a database ebe prometheus e nka liphetho tse fumanoeng. Sena se boetse se u lumella ho holisa metrics e bokeletsoeng ka ho eketsa ea hau.

Ha re e sebeliseng tjena (mohlala deployment.yaml, e sa tlameng):

---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: postgres-exporter
  labels:
    app: {{ .Values.name }}
    monitoring: prometheus
spec:
  serviceName: {{ .Values.name }}
  replicas: 1
  revisionHistoryLimit: 5
  template:
    metadata:
      labels:
        app: postgres-exporter
        monitoring: prometheus
    spec:
      containers:
      - env:
        - name: DATA_SOURCE_URI
          value: postgresdb:5432/pstgr?sslmode=disable
        - name: DATA_SOURCE_USER
          value: postgres
        - name: DATA_SOURCE_PASS
          value: postgres
        resources:
          limits:
            cpu: 100m
            memory: 50Mi
          requests:
            cpu: 100m
            memory: 50Mi
        livenessProbe:
          tcpSocket:
            port: metrics
          initialDelaySeconds: 30
          periodSeconds: 30
        readinessProbe:
          tcpSocket:
            port: metrics
          initialDelaySeconds: 10
          periodSeconds: 30
        image: exporter
        name: postgres-exporter
        ports:
        - containerPort: 9187
          name: metrics

E ne e boetse e hloka tšebeletso le mokhoa oa litšoantšo

Ka mor'a ho romelloa, re hlile re batla hore bohle ba bonane.

Kenya sengoathoana se latelang ho Prometheus config:

  - job_name: 'postgres_exporter'
    metrics_path: '/metrics'
    scrape_interval: 5s
    dns_sd_configs:
    - names:
      - 'postgres-exporter'
      type: 'A'
      port: 9187

'Me joale ntho e' ngoe le e 'ngoe e ile ea sebetsa, se setseng ke ho kenyelletsa lintho tsena kaofela ho grafana le ho thabela sephetho.

Ntle le bokhoni ba ho eketsa lipotso tsa hau, o ka fetola litlhophiso ho prometheus, ho bokella metrics e lebisitsoeng ho feta.

Sena se ile sa etsoa ka tsela e tšoanang bakeng sa:

• Kafka
• Elasticsearch
• mongo

PS Lintlha tsohle tsa mabitso, likoung le tse ling kaofela li nkuoa moeeng 'me ha li na tlhahisoleseling.

Lihokela tse sebetsang:
Lenane la barekisi ba fapaneng ba kantle ho naha

Source: www.habr.com