{"id":86200,"date":"2020-06-22T13:42:20","date_gmt":"2020-06-22T11:42:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/monitoring-i-logirovanie-vneshnih-servisov-v-klaster-kubernetes"},"modified":"2020-06-22T13:42:20","modified_gmt":"2020-06-22T11:42:20","slug":"monitoring-i-logirovanie-vneshnih-servisov-v-klaster-kubernetes","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/monitoring-i-logirovanie-vneshnih-servisov-v-klaster-kubernetes","title":{"rendered":"Monitorimi dhe regjistrimi i sh\u00ebrbimeve t\u00eb jashtme n\u00eb klasterin Kubernetes","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"Monitorimi
\n
\nP\u00ebrsh\u00ebndetje t\u00eb gjith\u00eb.<\/p>\n

Nuk kam gjetur n\u00eb rrjet nj\u00eb udh\u00ebzues t\u00eb p\u00ebrgjithsh\u00ebm p\u00ebr regjistrimin dhe mbledhjen e metrikeve nga sh\u00ebrbimet e jashtme n\u00eb sistemet e shp\u00ebrndara n\u00eb Kubernetes<\/a><\/noindex>. Publikoj zgjidhjen time. Ky artikull supozon q\u00eb t\u00eb keni nj\u00eb Prometheus<\/a><\/noindex> dhe sh\u00ebrbime t\u00eb tjera t\u00eb pun\u00ebs. Si nj\u00eb shembull burimi t\u00eb dh\u00ebnash nga nj\u00eb sh\u00ebrbim stateful t\u00eb jasht\u00ebm do t\u00eb p\u00ebrdorim nj\u00eb DBMS PostgreSQL<\/a><\/noindex> n\u00eb kontejner Docker<\/a><\/noindex>. N\u00eb kompanin\u00eb ton\u00eb p\u00ebrdoret nj\u00eb menaxher paketash Helm<\/a><\/noindex>, m\u00eb posht\u00eb do t\u00eb ket\u00eb shembuj mbi t\u00eb. P\u00ebr t\u00ebr\u00eb zgjidhjen ne p\u00ebrgatisim nj\u00eb chart ton\u00eb, duke p\u00ebrfshir\u00eb n\u00ebnd\u00ebrchartet e t\u00eb gjith\u00eb sh\u00ebrbimeve t\u00eb p\u00ebrdorura.
\n <\/a><\/noindex><\/p>\n

Regjistrimi<\/h4>\n

\nShum\u00eb kompani p\u00ebr mbledhjen dhe shikimin dhe centralizimin e regjistrimeve p\u00ebrdorin nj\u00eb stak teknologjish Elasticsearch<\/a><\/noindex> + Logstash<\/a><\/noindex> + kibana<\/a><\/noindex>, e njohur ndryshe si ELK. N\u00eb rastin ton\u00eb nuk ka nevoj\u00eb t\u00eb indeksohet p\u00ebrmbajtja dhe un\u00eb kam aplikuar nj\u00eb zgjidhje m\u00eb t\u00eb leht\u00eb Loki<\/a><\/noindex>. Ai \u00ebsht\u00eb i disponuesh\u00ebm si nj\u00eb paket\u00eb Helm, ne e kemi shtuar at\u00eb si subchart duke ndryshuar vlerat p\u00ebr ingress dhe pv sipas sistemit ton\u00eb.<\/p>\n

values.yaml<\/b><\/p>\n

ingress:\n  enabled: true\n  annotations:\n     kubernetes.io\/ingress.class: nginx\n  hosts:\n    - host: kube-loki.example.domain\n      paths: \n        - \/\n  tls: []\n\n....\n\npersistence:\n  type: pvc\n  enabled: true\n  accessModes:\n    - ReadWriteOnce\n  size: 100Gi\n  finalizers:\n    - kubernetes.io\/pvc-protection\n  existingClaim: "pv-loki"\n<\/code><\/pre>\n
P\u00ebr t\u00eb d\u00ebrguar log-et n\u00eb instanc\u00eb Loki<\/a><\/noindex> p\u00ebrdorim Loki Docker Logging Driver<\/a><\/noindex>.<\/p>\n
Duhet t\u00eb instaloni k\u00ebt\u00eb shtes\u00eb n\u00eb t\u00eb gjitha Docker<\/a><\/noindex> hostet nga t\u00eb cilat d\u00ebshironi t\u00eb merrni log-et. Ka disa m\u00ebnyra p\u00ebr t\u00eb treguar demonit si t\u00eb p\u00ebrdor\u00eb shtes\u00ebn. Un\u00eb e b\u00ebj zgjedhjen e drejtuesit n\u00eb yaml Docker Compose<\/a><\/noindex>, i cili \u00ebsht\u00eb pjes\u00eb e Ansible<\/a><\/noindex> playbook.<\/p>\n
                        postgres.yaml<\/b><\/p>\n
    - name: Run containers\n      docker_compose:\n        project_name: main-postgres\n        definition:\n          version: '3.7'\n          services:\n            p:\n              image: "{{ postgres_version }}"\n              container_name: postgresql\n              restart: always\n              volumes:\n                - "{{ postgres_dir }}\/data:\/var\/lib\/postgresql\/data"\n                - "{{ postgres_dir }}\/postgres_init_scripts:\/docker-entrypoint-initdb.d"\n              environment:\n                POSTGRES_PASSWORD: {{ postgres_pass }}\n                POSTGRES_USER: {{ postgres_user }}\n              ports:\n                - "{{ postgres_ip }}:{{ postgres_port }}:5432"\n              logging:\n                driver: "loki"\n                options:\n                  loki-url: "{{ loki_url }}"\n                  loki-batch-size: "{{ loki_batch_size }}"\n                  loki-retries: "{{ loki_retries }}"\n...\n<\/code><\/pre>\n
\nku loki_url: kube-loki.example.domain\/loki\/api\/v1\/push<\/a><\/noindex> <\/p>\n
Metricat<\/h4>\n
\n Merren metricat nga PostgreSQL me ndihm\u00ebn e postgres_exporter<\/a><\/noindex> p\u00ebr Prometheus<\/a><\/noindex>. Vazhdimi i skedarit t\u00eb m\u00ebsip\u00ebrm Ansible<\/a><\/noindex> playbook.<\/p>\n
                        postgres.yaml<\/b><\/p>\n
...\n            pexp:\n              image: "wrouesnel\/postgres_exporter"\n              container_name: pexporter\n              restart: unless-stopped\n              environment:\n                DATA_SOURCE_NAME: "postgresql:\/\/{{ postgres_user }}:{{ postgres_pass }}@p:5432\/postgres?sslmode=disable"\n              ports:\n                - "{{ postgres_ip }}:{{ postgres_exporter_port }}:9187"\n              logging:\n                driver: "json-file"\n                options:\n                  max-size: "5m"\n...\n<\/code><\/pre>\n
P\u00ebr nj\u00eb pamje m\u00eb t\u00eb qart\u00eb t\u00eb emrave t\u00eb sh\u00ebrbimeve stateful jasht\u00eb, do t'i shkruajm\u00eb p\u00ebrmes Endpoints.<\/p>\n
                        postgres-service.yaml<\/b><\/p>\n
apiVersion: v1\nkind: Endpoints\nmetadata:\n  name: postgres-exporter\nsubsets:\n  - addresses:\n      - ip: {{ .Values.service.postgres.ip }}\n    ports:\n      - port: {{ .Values.service.postgres.port }}\n        protocol: TCP\n---\napiVersion: v1\nkind: Service\nmetadata:\n  name: postgres-exporter\n  labels:\n    chart:  "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"\nspec:\n  ports:\n    - protocol: TCP\n      port: {{ .Values.service.postgres.port }}\n      targetPort: {{ .Values.service.postgres.port }}\n<\/code><\/pre>\n
Konfigurimi i Prometheus p\u00ebr t\u00eb marr\u00eb t\u00eb dh\u00ebnat nga postgres_exporter b\u00ebhet duke redaktuar vlerat n\u00eb subchart.<\/p>\n
                        values.yaml<\/b><\/p>\n
scrape_configs:
...
  - job_name: postgres-exporter
    static_configs:
      - targets: 
         - postgres-exporter.applicationnamespace.svc.cluster.local:9187
        labels:
          alias: postgres
...\n<\/code><\/pre>\n
P\u00ebr vizualizimin e t\u00eb dh\u00ebnave t\u00eb marra, instaloni Dashboard p\u00ebrkat\u00ebs n\u00eb
\nGrafana<\/a><\/noindex> dhe konfiguroni burimet e t\u00eb dh\u00ebnave. Kjo mund t\u00eb b\u00ebhet gjithashtu p\u00ebrmes vlerave n\u00eb subchart Grafana.<\/p>\n
                        Si duket kjo<\/b>
\n                        \"Monitorimi<\/p>\n
\nShpresoj q\u00eb ky artikull i shkurt\u00ebr ju ndihmoi t\u00eb kuptoni idet\u00eb kryesore t\u00eb k\u00ebtij zgjidhjeje dhe do t'ju kursej\u00eb koh\u00eb n\u00eb konfigurimin e monitoringut dhe regjistrimit t\u00eb sh\u00ebrbimeve t\u00eb jashtme p\u00ebr Loki\/Prometheus n\u00eb klasterin Kubernetes.
\n
Burimi: habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"
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