first demo

Dockerfiles/backup.Dockerfile

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+# Use the Alpine image as the base
+FROM alpine:latest as backup_custom
+
+# Copy the entrypoint script into the container
+COPY entrypoint_backup.sh /usr/local/bin/entrypoint_backup.sh
+
+# Switch to root user for setup
+USER root
+
+# Make the entrypoint script executable
+RUN chmod +x /usr/local/bin/entrypoint_backup.sh
+
+# Set the new entrypoint
+ENTRYPOINT ["/usr/local/bin/entrypoint_backup.sh"]

Dockerfiles/entrypoint_backup.sh

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+#!/bin/sh
+
+# Install PostgreSQL client
+apk add --no-cache postgresql-client
+
+# Wait until the PostgreSQL server is ready
+until pg_isready -h admin -U admin; do
+    echo "Waiting for PostgreSQL..."
+    sleep 2
+done
+

Dockerfiles/entrypoint_odoo.sh

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+#!/bin/sh
+
+sleep 20
+odoo -i base

Dockerfiles/exporter.Dockerfile

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+# Use a Python slim image as base
+FROM python:3.9-slim as exporter_custom
+
+# Set environment variables to avoid buffering
+ENV PYTHONUNBUFFERED=1
+
+# Create and set working directory
+WORKDIR /app
+
+# Install required dependencies
+RUN apt-get update && \
+    apt-get install -y \
+    libpq-dev && \
+    pip install psycopg2-binary prometheus-client && \
+    apt-get clean
+
+# Create a directory for logs
+RUN mkdir /app/logs
+
+# Copy the Python script into the container
+COPY pg_metrics_exporter.py /app/
+
+# Set permissions for log directory (if required)
+RUN chmod 755 /app/logs
+
+# Run the script and redirect logs to a file
+CMD ["python", "/app/pg_metrics_exporter.py", ">", "/app/logs/exporter.log", "2>&1"]

Dockerfiles/odoo.Dockerfile

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+# Use the existing Odoo image as the base
+FROM odoo:latest as odoo-custom
+
+# Copy the entrypoint script into the container
+COPY entrypoint_odoo.sh /usr/local/bin/entrypoint_odoo.sh
+
+USER root
+
+# Make the entrypoint script executable
+RUN chmod +x /usr/local/bin/entrypoint_odoo.sh
+
+# Set the new entrypoint
+ENTRYPOINT ["/usr/local/bin/entrypoint_odoo.sh"]

Dockerfiles/pg_metrics_exporter.py

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+import psycopg2
+from prometheus_client import start_http_server, Gauge
+import time
+
+# Configuration for database connection
+DB_PARAMS = {
+    "host": "admin",
+    "database": "admin",
+    "user": "admin",
+    "password": "admin"
+}
+
+# Prometheus metrics
+QUERY_CALLS = Gauge('postgresql_query_calls', 'Number of calls for each query', ['query'])
+QUERY_TOTAL_TIME = Gauge('postgresql_query_total_time_ms', 'Total execution time for each query in ms', ['query'])
+
+def fetch_metrics():
+    try:
+        # Log connection attempt
+        print("Connecting to PostgreSQL database...")
+
+        conn = psycopg2.connect(**DB_PARAMS)
+        cur = conn.cursor()
+
+        # Execute query to get data
+        cur.execute("""
+            SELECT query, calls, total_exec_time
+            FROM pg_stat_statements
+            ORDER BY total_exec_time DESC;
+        """)
+
+        # Iterate through results and set Prometheus metrics
+        for row in cur:
+            query = row[0].replace("\\", "\\\\").replace('"', '\\"')  # Escape special characters
+            calls = row[1]
+            total_time = row[2] * 1000  # Convert seconds to milliseconds
+
+            QUERY_CALLS.labels(query=query).set(calls)
+            QUERY_TOTAL_TIME.labels(query=query).set(total_time)
+
+            # Log the metrics being set
+            print(f"Metrics set for query: {query} | Calls: {calls} | Total execution time: {total_time} ms")
+
+        cur.close()
+        conn.close()
+    except psycopg2.Error as e:
+        print(f"Error fetching data: {e}")
+    except Exception as e:
+        print(f"Unexpected error: {e}")
+
+if __name__ == '__main__':
+    # Start Prometheus HTTP server on port 8000
+    start_http_server(8000)
+    print("Exporter running on http://localhost:8000/metrics")
+
+    # Main loop to fetch metrics at regular intervals
+    while True:
+        fetch_metrics()
+        time.sleep(60)  # Scrape every 60 seconds

docker-compose.yml

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+version: "3.3"
+services:
+  admin:
+    image: postgres:latest
+    hostname: admin
+    ports:
+    - "5432:5432"
+    environment:
+      POSTGRES_DB: admin
+      POSTGRES_USER: admin
+      POSTGRES_PASSWORD: admin
+    volumes:
+    - postgres-data:/var/lib/postgresql/data
+  pgadmin:
+    image: dpage/pgadmin4:latest
+    ports:
+    - "5050:80"
+    environment:
+      PGADMIN_DEFAULT_EMAIL: admin@admin.com
+      PGADMIN_DEFAULT_PASSWORD: admin
+  prometheus_exporter:
+    image: exporter_custom
+    ports:
+    - "8000:8000"
+  odoo:
+    image: odoo_custom
+    ports:
+    - "8069:8069"
+    environment:
+      HOST: admin
+      USER: admin
+      PASSWORD: admin
+      DATABASE: admin
+      ODOO_PASSWORD: admin
+    volumes:
+    - ./files/odoo.conf:/etc/odoo/odoo.conf
+    - ./logs/odoo:/var/log/odoo
+  grafana:
+    image: grafana/grafana:latest
+    ports:
+    - "3000:3000"
+    environment:
+      GF_SECURITY_ADMIN_PASSWORD: grafana_pwd
+      GF_DATASOURCES_PROMETHEUS_URL: http://prometheus:9090
+  prometheus:
+    image: prom/prometheus:latest
+    ports:
+    - "9090:9090"
+    volumes:
+    - prometheus-data:/prometheus
+    - ./files/prometheus.yml:/etc/prometheus/prometheus.yml
+  fluentd:
+    image: fluent/fluentd:v1.13-1
+    ports:
+    - "24224:24224"
+    volumes:
+    - ./logs/odoo:/var/log/odoo
+    - ./files/fluent.conf:/fluentd/etc/fluent.conf
+  backup:
+    image: backup_custom
+    environment:
+      POSTGRES_HOST: admin
+      POSTGRES_DB: admin
+      POSTGRES_USER: admin
+      POSTGRES_PASSWORD: admin
+    volumes:
+    - backup-data:/backup
+networks:
+  testNetwork:
+    driver: bridge
+volumes:
+  postgres-data:
+  prometheus-data:
+  backup-data:

files/fluent.conf

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+<source>
+  @type tail
+  path "/var/log/odoo/odoo.log"
+  pos_file "/fluentd/logs/odoo.pos"
+  format none
+  tag "odoo.log"
+</source>
+
+<match odoo.log>
+  @type file
+  path "/fluentd/logs/collected-logs"
+</match>
+

files/odoo.conf

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+[options]
+db_host = admin
+db_port = 5432
+db_user = admin
+db_password = admin
+default_productivity_apps = True
+db_name = admin
+logfile = /var/log/odoo/odoo.log

files/prometheus.yml

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+scrape_configs:
+  - job_name: 'pg_stat_statements'
+    static_configs:
+      - targets: ['prometheus_exporter:8000']
+    scrape_interval: 15s

inventory

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+[localhost]
+localhost ansible_connection=local

playbook.yml

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+- hosts: localhost
+  become: true
+  connection: local
+  tasks:
+    - name: Load variables from volumes.yml
+      set_fact:
+        volume_vars: "{{ lookup('file', 'volumes.yml') | from_yaml }}"
+
+    - name: Load variables from secrets.yml
+      set_fact:
+        secret_vars: "{{ lookup('file', 'secrets.yml') | from_yaml }}"
+
+    - name: Create volumes
+      command: docker volume create {{ item.name }}
+      with_items: "{{ volume_vars.volumes }}"
+      changed_when: false
+
+    - name: Run docker-compose up -d
+      command: docker-compose up -d
+

secrets.yml

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+postgres_password: admin
+pgadmin_password: admin
+odoo_password: admin

volumes.yml

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+volumes:
+    - name: postgres-data
+    - name: prometheus-data
+    - name: backup-data