GITIGNORE Upload

Abgreifen von wetterdaten über API

.gitignore

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+/ansible

PiHole/HA/99-dns-vip.conf

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+# Place under /etc/dnsmasq.d/99-dns-vip.conf
+# This will propagate the DNS VIP of keepalived as DNS Server over DHCP
+dhcp-option=option:dns-server,192.168.1.4

PiHole/HA/Keepalived/backup_keepalived.conf

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+# Place under /etc/keepalived/keepalived.conf on BACKUP pihole
+global_defs {
+  router_id pihole-dns-02
+  script_user root
+  enable_script_security
+}
+
+vrrp_script chk_ftl {
+  script "/etc/scripts/chk_ftl"
+  interval 1
+  weight -10
+}
+
+vrrp_instance PIHOLE {
+  state BACKUP
+  interface eth0
+  virtual_router_id 55
+  priority 145
+  advert_int 1
+  unicast_src_ip 192.168.1.3
+  unicast_peer {
+    192.168.1.2
+  }
+
+  authentication {
+    auth_type PASS
+        auth_pass secret
+  }
+
+  virtual_ipaddress {
+    192.168.1.4/24
+  }
+
+  track_script {
+    chk_ftl
+  }
+}

PiHole/HA/Keepalived/master_keepalived.conf

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+# Place under /etc/keepalived/keepalived.conf on MASTER pihole
+global_defs {
+  router_id pihole-dns-01
+  script_user root
+  enable_script_security
+}
+
+vrrp_script chk_ftl {
+  script "/usr/local/scripts/chk_ftl"
+  interval 1
+  weight -10
+}
+
+vrrp_instance PIHOLE {
+  state MASTER
+  interface eth0
+  virtual_router_id 55
+  priority 150
+  advert_int 1
+  unicast_src_ip 192.168.2.2
+  unicast_peer {
+    192.168.2.3
+  }
+
+  authentication {
+    auth_type PASS
+    auth_pass secret
+  }
+
+  virtual_ipaddress {
+    192.168.2.4/24
+  }
+
+  track_script {
+    chk_ftl
+  }
+}

PiHole/HA/chk_ftl

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+#!/bin/sh
+
+# Place under /etc/scripts for FTL Status check of keepalived
+
+STATUS=$(ps ax | grep -v grep | grep pihole-FTL)
+
+if [ "$STATUS" != "" ]
+then
+    exit 0
+else
+    exit 1
+fi

scripte/festplatte_sicher_loeschen.sh

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+#!/bin/bash
+
+#(c)By CeMunz IT
+#Script zum Sicheren löschen von Festplatten
+
+clear
+
+echo "Willkommen beil Löschungstool für Festplatten (HDDs)"
+echo ""
+echo "Es laufen insgesammt 2 Löschvorgänge durch!"
+echo ""
+
+FP= ls /dev/sd* | grep sd
+echo ""
+read -p "Bitte Festplatte wählen (a...g):" lp
+echo "folgende Festplatte wird gelöscht:"
+
+echo "/dev/sd$lp"
+echo -n "Richtige Platte gewählt?(j/n): "
+read -r choice
+
+case $choice in
+    j|J)
+        echo "Festplatte wird gelöscht. NICHT VORZEITIG STOPPEN!"
+        ;;
+    *)
+        echo "Vorgang abgebrochen!"
+        exit 1
+        ;;
+esac
+
+echo ""
+echo "Erster Vorgang"
+
+# Setzen des Passwortes zum löschen
+sudo hdparm --user-master u --security-set-pass Eins /dev/sd$lp > /dev/null
+sudo hdparm --user-master u --security-erase-enhanced Eins /dev/sd$lp
+
+echo "Zweiter Vorgang"
+
+### In Bearbeitung!
+### #sudo dd if=/dev/urandom of=/dev/sd$lp bs=4M status=progress conv=fdatasync
+
+### #echo "Dritter Vorgang"
+
+sudo dd if=/dev/zero of=/dev/sd$lp bs=1M status=progress conv=fdatasync
+
+echo "Metadaten löschen:" # wipefs macht die Platte "sauber" von Metadaten für eine neue Nutzung
+wipefs -a /dev/sd$lp
+
+echo "Festplatte /dev/sd$lp erfolgtreich gelöscht!"

scripte/wetterdaten/.env

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+OWM_API_KEY=ea645349e2fbb2ff573104bdd6763604
+DB_USER=root
+DB_PASSWORD=dein_db_passwort
+DB_HOST=127.0.0.1
+DB_PORT=3306
+DB_NAME=weather_db

scripte/wetterdaten/README.md

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+**1. Voraussetzungen installieren**
+
+API Key auf openweathermap.org generieren
+
+```
+pip install requests mariadb python-dotenv
+```
+
+**2. Datenbank Vorbereiten**
+
+```
+CREATE DATABASE weather_db;
+
+USE weather_db;
+
+CREATE TABLE weather_data (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    city VARCHAR(100) NOT NULL,
+    country VARCHAR(10),
+    temperature FLOAT,
+    feels_like FLOAT,
+    humidity INT,
+    pressure INT,
+    wind_speed FLOAT,
+    description VARCHAR(255),
+    recorded_at DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+
+```
+
+**3. Script und .env Datei ablegen und bearbeiten**
+
+**4. Cronjob**
+```
+0 * * * * /usr/bin/python3 /pfad/zum/weather_script.py
+```

scripte/wetterdaten/weather_script.py

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+import requests
+import mariadb
+import sys
+import os
+from datetime import datetime
+from dotenv import load_dotenv
+
+# Umgebungsvariablen aus .env laden
+load_dotenv()
+
+# --- Konfiguration ---
+API_KEY = os.getenv("OWM_API_KEY")
+CITY = "Berlin"
+UNITS = "metric"  # metric = Celsius, imperial = Fahrenheit
+
+DB_CONFIG = {
+    "user": os.getenv("DB_USER", "root"),
+    "password": os.getenv("DB_PASSWORD", ""),
+    "host": os.getenv("DB_HOST", "127.0.0.1"),
+    "port": int(os.getenv("DB_PORT", 3306)),
+    "database": os.getenv("DB_NAME", "weather_db"),
+}
+
+
+def fetch_weather(city):
+    """Ruft Wetterdaten von der OpenWeatherMap-API ab."""
+    url = "https://api.openweathermap.org/data/2.5/weather"
+    params = {
+        "q": city,
+        "appid": API_KEY,
+        "units": UNITS,
+        "lang": "de",
+    }
+
+    try:
+        response = requests.get(url, params=params, timeout=10)
+        response.raise_for_status()
+        return response.json()
+    except requests.exceptions.RequestException as e:
+        print(f"Fehler beim Abrufen der Wetterdaten: {e}")
+        return None
+
+
+def parse_weather(data):
+    """Extrahiert die relevanten Felder aus der API-Antwort."""
+    return {
+        "city": data["name"],
+        "country": data["sys"].get("country", ""),
+        "temperature": data["main"]["temp"],
+        "feels_like": data["main"]["feels_like"],
+        "humidity": data["main"]["humidity"],
+        "pressure": data["main"]["pressure"],
+        "wind_speed": data["wind"]["speed"],
+        "description": data["weather"][0]["description"],
+    }
+
+
+def save_to_db(weather):
+    """Speichert die Wetterdaten in der MariaDB."""
+    try:
+        conn = mariadb.connect(**DB_CONFIG)
+    except mariadb.Error as e:
+        print(f"Fehler bei der DB-Verbindung: {e}")
+        sys.exit(1)
+
+    cursor = conn.cursor()
+
+    sql = """
+        INSERT INTO weather_data
+        (city, country, temperature, feels_like, humidity,
+         pressure, wind_speed, description, recorded_at)
+        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
+    """
+    values = (
+        weather["city"],
+        weather["country"],
+        weather["temperature"],
+        weather["feels_like"],
+        weather["humidity"],
+        weather["pressure"],
+        weather["wind_speed"],
+        weather["description"],
+        datetime.now(),
+    )
+
+    try:
+        cursor.execute(sql, values)
+        conn.commit()
+        print(f"Daten gespeichert (ID: {cursor.lastrowid})")
+    except mariadb.Error as e:
+        print(f"Fehler beim Speichern: {e}")
+        conn.rollback()
+    finally:
+        cursor.close()
+        conn.close()
+
+
+def main():
+    if not API_KEY:
+        print("Fehler: OWM_API_KEY nicht gesetzt. Bitte in .env eintragen.")
+        sys.exit(1)
+
+    print(f"Rufe Wetterdaten für '{CITY}' ab...")
+    data = fetch_weather(CITY)
+
+    if data:
+        weather = parse_weather(data)
+        print(f"Temperatur: {weather['temperature']}°C, "
+              f"{weather['description']}")
+        save_to_db(weather)
+
+
+if __name__ == "__main__":
+    main()