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# PostgreSQL fuer Buchungen, Zahlungen, Gutscheine und Protokoll.
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#
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# SPEICHER: Blockspeicher mit ReadWriteOnce verwenden (z. B. Longhorn,
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# local-path, Ceph RBD). KEINE SMB/CIFS-Freigabe als Datenverzeichnis:
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# SMB bildet POSIX-Sperren, fsync-Garantien und Dateirechte nicht so ab,
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# wie PostgreSQL sie fuer Absturzsicherheit voraussetzt — Datenverlust bei
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# Stromausfall oder Neustart ist die Folge. Sicherungen (backup-CronJob)
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# duerfen dagegen auf SMB/NFS liegen.
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#
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# Alternative fuer hoehere Verfuegbarkeit: CloudNativePG-Operator; dann
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# dieses Manifest weglassen und DATABASE_URL auf dessen Service zeigen lassen.
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apiVersion: apps/v1
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kind: StatefulSet
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metadata:
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name: artista-postgres
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spec:
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serviceName: artista-postgres
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replicas: 1
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selector:
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matchLabels:
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app.kubernetes.io/name: artista-postgres
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template:
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metadata:
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labels:
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app.kubernetes.io/name: artista-postgres
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spec:
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securityContext:
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runAsNonRoot: true
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runAsUser: 70
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runAsGroup: 70
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fsGroup: 70
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seccompProfile: { type: RuntimeDefault }
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containers:
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- name: postgres
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image: postgres:18.1-alpine
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ports:
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- containerPort: 5432
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env:
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- name: POSTGRES_USER
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value: artista
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- name: POSTGRES_DB
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value: artista
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- name: POSTGRES_PASSWORD
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valueFrom:
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secretKeyRef: { name: artista-secrets, key: DB_PASSWORD }
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volumeMounts:
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# Ab PostgreSQL 18 liegt PGDATA unter /var/lib/postgresql/18/docker.
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- name: data
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mountPath: /var/lib/postgresql
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readinessProbe:
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exec: { command: ["pg_isready", "-U", "artista"] }
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periodSeconds: 5
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livenessProbe:
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exec: { command: ["pg_isready", "-U", "artista"] }
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initialDelaySeconds: 30
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periodSeconds: 20
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resources:
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requests: { cpu: 100m, memory: 256Mi }
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limits: { memory: 1Gi }
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securityContext:
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allowPrivilegeEscalation: false
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capabilities: { drop: ["ALL"] }
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volumeClaimTemplates:
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- metadata:
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name: data
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spec:
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accessModes: ["ReadWriteOnce"]
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# storageClassName: longhorn
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resources:
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requests:
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storage: 10Gi
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: artista-postgres
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spec:
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clusterIP: None
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selector:
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app.kubernetes.io/name: artista-postgres
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ports:
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- port: 5432
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