Ke nānā nei i nā postgres i loko o Openshift

Aloha lā, e nā kamaʻāina o Habr!

I kēia lā makemake wau e haʻi iā ʻoe pehea mākou i makemake ai e nānā i nā postgres a me kekahi mau mea ʻē aʻe i loko o ka hui OpenShift a pehea mākou i hana ai.

Ma ka puka komo iā lākou:

• Hoʻololi wehe
• Helm
• IHILA

No ka hana ʻana me kahi noi java, maʻalahi a maʻalahi nā mea a pau, a i ʻole ka pololei:

1) Hoʻohui i build.gradle

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

2) Holo i ka prometheus me ka hoʻonohonoho

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

3) Hoʻohui i kahi hōʻike iā Grafana

He mea maʻalahi nā mea a pau a hiki i ka manawa e nānā ai i nā kumu e kū kokoke ana i ko mākou inoa inoa (ʻae, maikaʻi ʻole kēia, ʻaʻohe mea e hana i kēia, akā nā mea like ʻole).

Pehea e hana ai?

Ma kahi o ka pod me nā postgres a me ka prometheus pono'ī, pono mākou i hoʻokahi mea hou - mea hoʻopuka.

ʻO ka mea hoʻopuka i loko o kahi manaʻo abstract he ʻelele e hōʻiliʻili i nā metric mai kahi noi a i ʻole kahi kikowaena. No ka postgres exporter, ua kākau ʻia ma Go, hana ia ma ke kumu o ka holo ʻana i nā palapala SQL i loko o ka waihona a laila lawe ʻo prometheus i nā hopena i loaʻa. ʻAe kēia iā ʻoe e hoʻonui i nā metric i hōʻiliʻili ʻia ma ka hoʻohui ʻana i kāu ponoʻī.

E hoʻolālā e like me kēia (example deployment.yaml, non-binding):

---
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

Pono pū kekahi lawelawe a me ke kahawai kiʻi

Ma hope o ka hoʻolaha ʻana, makemake nui mākou e ʻike kekahi i kekahi.

Hoʻohui i kēia ʻāpana i ka Prometheus config:

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

A laila hana nā mea a pau, ʻo ka mea i koe e hoʻohui i kēia mau mea āpau i ka grafana a hauʻoli i ka hopena.

Ma kahi o ka hiki ke hoʻohui i kāu mau nīnau ponoʻī, hiki iā ʻoe ke hoʻololi i nā hoʻonohonoho i ka prometheus, e hōʻiliʻili i nā metric i hoʻopaʻa ʻia.

Ua hana ʻia kēia ma ke ʻano like no:

• Kafka
• Elasticsearch
• Mongo

PS Lawe ʻia nā ʻikepili āpau ma nā inoa, nā awa a me nā mea ʻē aʻe mai ka lewa a ʻaʻohe ʻike.

Hoʻohui pono:
Ka papa inoa o nā mea kūʻai aku

Source: www.habr.com