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On this page
  • 1. Grafana Helm Repo Eklenmesi
  • 2. Loki ile İlgili Chart’ları Aramak
  • 3. Chart Değerlerini (values) İncelemek
  • 4. values.yaml Özelleştirmesi
  • 5. Loki Stack’i Kurma
  • 6. Kurulum Sonrası Kontrol (kubectl get all)
  • 7. Özet

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  1. Loki

Deploying Loki in Kubernetes

1. Grafana Helm Repo Eklenmesi

İlk adım, Grafana’nın Helm deposunu Kubernetes kümesine tanıtmaktır:

helm repo add grafana https://grafana.github.io/helm-charts
helm repo update
  • helm repo add: Belirtilen URL’yi “grafana” adıyla Helm repositories listesine ekler.

  • helm repo update: Mevcut Helm repo’larınızı günceller, böylece en yeni chart sürümlerine erişebilirsiniz.

2. Loki ile İlgili Chart’ları Aramak

Repo eklendikten sonra, “Loki” anahtar sözcüğüyle ilgili chart’ları listeleyebilirsiniz:

helm search repo loki

Arama sonucunda “grafana/loki-stack”, “grafana/loki-canary”, “grafana/loki-distributed” gibi seçenekler görürsünüz. Burada:

  • loki-stack: Tek seferde Loki, Grafana ve Promtail kurulumunu yapar.

3. Chart Değerlerini (values) İncelemek

Her chart, özelleştirilmesine izin veren bir values.yaml içeriğine sahiptir. helm show values komutuyla varsayılan değerleri görebilirsiniz:

helm show values grafana/loki-stack > values.yaml

Bu sayede values.yaml içeriğini metin editöründe inceleyip özelleştirebilirsiniz. Tipik olarak şunlar yer alır:

  • Loki konfigürasyonu (ör. depolama, replikalar vb.)

  • Promtail ayarları (hangi etiketlerle log toplayacağı, hangi node selector’ları vb.)

  • Grafana bileşenini etkinleştirme veya devre dışı bırakma ( enable duruma getiriyoruz )

  • Diğer opsiyonel kısımlar (örn. Fluent Bit entegrasyonu)

4. values.yaml Özelleştirmesi

  1. grafana.enabled = true yaparak Grafana bileşenini aktif hale getiriyoruz (varsayılan olarak false olabilir).

  2. grafana.image.tag = latest diyerek Grafana’nın son sürümünün çekilmesini sağlıyoruz (daha sabit bir sürüm kullanmak isterseniz tag’i belirtebilirsiniz).

  3. promtail.enabled varsayılan olarak zaten true görünüyor; bu sayede Promtail DaemonSet olarak kurulup her node’dan log toplayacak şekilde çalışıyor.

Bu ayarları kaydedip values.yaml dosyasından çıkıyoruz.

5. Loki Stack’i Kurma

Şimdi özelleştirdiğimiz values.yaml dosyasıyla beraber loki-stack chart’ını kurabiliriz:

helm install \
  --values values.yaml \
  loki \
  grafana/loki-stack
  • loki burada “release name” olarak geçiyor. İstediğiniz bir isim verebilirsiniz.

  • grafana/loki-stack: Kullanmak istediğimiz chart.

Kurulum tamamlandığında Helm bize, loki-stack’in başarılı şekilde kurulduğunu ve Grafana üzerinde otomatik olarak Loki veri kaynağının oluşturulduğunu belirten bir mesaj verir.

6. Kurulum Sonrası Kontrol (kubectl get all)

kubectl get all komutu ile kaynakları görüntülediğinizde şunları görürsünüz:

  1. Pod’lar:

    • loki-0 adlı bir StatefulSet pod’u (Loki’nin kendisi).

    • loki-grafana-xxxx adlı bir Deployment pod’u (Grafana).

    • loki-promtail-xxxxx adlı bir DaemonSet pod’u (Promtail, her node’da bir tane).

  2. Services:

    • service/loki (Loki’yi erişilebilir kılar).

    • service/loki-grafana (Grafana için Service).

    • service/loki-headless, service/loki-memberlist vb. (Loki’nin dahili iletişimi).

  3. StatefulSet / Deployment / ReplicaSet / DaemonSet:

    • Grafana (Deployment)

    • Loki (StatefulSet)

    • Promtail (DaemonSet)

Bu düzen sayesinde, Promtail tüm node’lardaki log’ları okur ve Loki’ye iletir. Grafana arayüzünde (varsayılan 80 veya 3000 portuyla) Loki datasource’u otomatik tanımlanmış şekilde görürsünüz.

7. Özet

  • Helm repo ekledik ve güncelledik.

  • Loki-stack chart’ını aradık ve values.yaml’ı inceleyip özelleştirdik (Grafana’yı etkinleştirdik, sürüm tag’lerini güncelledik).

  • Helm install komutuyla tek seferde Loki, Grafana ve Promtail’i Kubernetes üzerinde çalışır hale getirdik.

  • kubectl get all komutuyla, StatefulSet (Loki), Deployment (Grafana) ve DaemonSet (Promtail) kaynaklarının başarılı şekilde oluşturulduğunu doğruladık.

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Last updated 3 months ago

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