Cloud Expert

Kubernetes Operators¶

KubernetesOperatorsCRD 3 min read

Custom controllers pro automatizaci aplikačního lifecycle v Kubernetes.

Co je Operator?¶

Operator = custom controller + CRD (Custom Resource Definition). Automatizuje operational knowledge — backup, scaling, failover.

CRD příklad¶

apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:
  name: databases.myapp.io
spec:
  group: myapp.io
  names: {kind: Database, plural: databases}
  scope: Namespaced
  versions:
    - name: v1
      served: true
      storage: true
      schema:
        openAPIV3Schema:
          type: object
          properties:
            spec:
              type: object
              properties:
                engine: {type: string}
                version: {type: string}
                replicas: {type: integer}

Populární Operators¶

• Prometheus Operator — monitoring stack
• Strimzi — Kafka na K8s
• Zalando Postgres Operator — PostgreSQL HA

Summary¶

Operators kodifikují operational knowledge. Používejte existující operators, vlastní pište jen pro specifické potřeby.

Need Help with Implementation?¶

Our team has experience designing and implementing modern architectures. We’re happy to help.

Free Consultation