Psql

Dockerfile

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+# syntax=docker/dockerfile:1
+FROM python:3
+ENV PYTHONUNBUFFERED=1
+WORKDIR /code
+COPY requirements.txt /code/
+RUN pip install -r requirements.txt
+COPY . /code/

claim.yaml

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+---
+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: pg-storage
+  namespace: pg
+spec:
+  accessModes:
+  - ReadWriteMany
+  resources:
+    requests:
+      storage: 100Mi
+  storageClassName: "standard"

deployment.yaml

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+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: pg-db
+  namespace: pg
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: pg-db
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        app: pg-db
+    spec:
+      initContainers:
+      - image: busybox
+        name: mount-permissions-fix
+        command: ["sh", "-c", "chmod 777 /var/lib/postgresql/data"]
+        volumeMounts:
+        - name: data
+          mountPath: /var/lib/postgresql/data
+      containers:
+      - image: postgres:10.13
+        name: postgres
+        env:
+        - name: POSTGRES_USER
+          value: "testuser"
+        - name: POSTGRES_DB
+          value: "testdatabase"
+        - name: PGDATA
+          value: "/var/lib/postgresql/data/pgdata"
+        - name: POSTGRES_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: pg-secret
+              key: PASS
+        ports:
+        - containerPort: 5432
+          protocol: TCP
+        resources:
+          requests:
+            cpu: 500m
+            memory: 1000Mi
+          limits:
+            cpu: 500m
+            memory: 1000Mi
+        volumeMounts:
+        - name: data
+          mountPath: /var/lib/postgresql/data
+      volumes:
+      - name: data
+        persistentVolumeClaim:
+          claimName: pg-storage

docker-compose.yml

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+version: "3.9"
+
+services:
+  db:
+    image: postgres
+    volumes:
+      - ./data/db:/var/lib/postgresql/data
+    environment:
+      - POSTGRES_DB=postgres
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+  web:
+    build: .
+    command: python prj/manage.py runserver 0.0.0.0:8000
+    volumes:
+      - .:/code
+    ports:
+      - "8000:8000"
+    depends_on:
+      - db

requirements.txt

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+Django>=3.0,<4.0
+psycopg2-binary>=2.8